8 *(Released Thu, 19 Jul 2012)*
16 The current ``admin_up`` field, which used to denote whether an instance
17 should be running or not, has been removed. Instead, ``admin_state`` is
18 introduced, with 3 possible values -- ``up``, ``down`` and ``offline``.
20 The rational behind this is that an instance being “down” can have
23 - it could be down during a reboot
24 - it could be temporarily be down for a reinstall
25 - or it could be down because it is deprecated and kept just for its
28 The previous Boolean state was making it difficult to do capacity
29 calculations: should Ganeti reserve memory for a down instance? Now, the
30 tri-state field makes it clear:
32 - in ``up`` and ``down`` state, all resources are reserved for the
33 instance, and it can be at any time brought up if it is down
34 - in ``offline`` state, only disk space is reserved for it, but not
37 The field can have an extra use: since the transition between ``up`` and
38 ``down`` and vice-versus is done via ``gnt-instance start/stop``, but
39 transition between ``offline`` and ``down`` is done via ``gnt-instance
40 modify``, it is possible to given different rights to users. For
41 example, owners of an instance could be allowed to start/stop it, but
42 not transition it out of the offline state.
44 Instance policies and specs
45 +++++++++++++++++++++++++++
47 In previous Ganeti versions, an instance creation request was not
48 limited on the minimum size and on the maximum size just by the cluster
49 resources. As such, any policy could be implemented only in third-party
50 clients (RAPI clients, or shell wrappers over ``gnt-*``
51 tools). Furthermore, calculating cluster capacity via ``hspace`` again
52 required external input with regards to instance sizes.
54 In order to improve these workflows and to allow for example better
55 per-node group differentiation, we introduced instance specs, which
58 - minimum instance disk size, disk count, memory size, cpu count
59 - maximum values for the above metrics
60 - and “standard” values (used in ``hspace`` to calculate the standard
63 The minimum/maximum values can be also customised at node-group level,
64 for example allowing more powerful hardware to support bigger instance
67 Beside the instance specs, there are a few other settings belonging to
68 the instance policy framework. It is possible now to customise, per
69 cluster and node-group:
71 - the list of allowed disk templates
72 - the maximum ratio of VCPUs per PCPUs (to control CPU oversubscription)
73 - the maximum ratio of instance to spindles (see below for more
74 information) for local storage
76 All these together should allow all tools that talk to Ganeti to know
77 what are the ranges of allowed values for instances and the
78 over-subscription that is allowed.
80 For the VCPU/PCPU ratio, we already have the VCPU configuration from the
81 instance configuration, and the physical CPU configuration from the
82 node. For the spindle ratios however, we didn't track before these
83 values, so new parameters have been added:
85 - a new node parameter ``spindle_count``, defaults to 1, customisable at
86 node group or node level
87 - at new backend parameter (for instances), ``spindle_use`` defaults to 1
89 Note that spindles in this context doesn't need to mean actual
90 mechanical hard-drives; it's just a relative number for both the node
91 I/O capacity and instance I/O consumption.
93 Instance migration behaviour
94 ++++++++++++++++++++++++++++
96 While live-migration is in general desirable over failover, it is
97 possible that for some workloads it is actually worse, due to the
98 variable time of the “suspend” phase during live migration.
100 To allow the tools to work consistently over such instances (without
101 having to hard-code instance names), a new backend parameter
102 ``always_failover`` has been added to control the migration/failover
103 behaviour. When set to True, all migration requests for an instance will
104 instead fall-back to failover.
106 Instance memory ballooning
107 ++++++++++++++++++++++++++
109 Initial support for memory ballooning has been added. The memory for an
110 instance is no longer fixed (backend parameter ``memory``), but instead
111 can vary between minimum and maximum values (backend parameters
112 ``minmem`` and ``maxmem``). Currently we only change an instance's
115 - live migrating or failing over and instance and the target node
116 doesn't have enough memory
117 - user requests changing the memory via ``gnt-instance modify
123 In order to control the use of specific CPUs by instance, support for
124 controlling CPU pinning has been added for the Xen, HVM and LXC
125 hypervisors. This is controlled by a new hypervisor parameter
126 ``cpu_mask``; details about possible values for this are in the
127 :manpage:`gnt-instance(8)`. Note that use of the most specific (precise
128 VCPU-to-CPU mapping) form will work well only when all nodes in your
129 cluster have the same amount of CPUs.
134 Another area in which Ganeti was not customisable were the parameters
135 used for storage configuration, e.g. how many stripes to use for LVM,
136 DRBD resync configuration, etc.
138 To improve this area, we've added disks parameters, which are
139 customisable at cluster and node group level, and which allow to
140 specify various parameters for disks (DRBD has the most parameters
141 currently), for example:
143 - DRBD resync algorithm and parameters (e.g. speed)
144 - the default VG for meta-data volumes for DRBD
145 - number of stripes for LVM (plain disk template)
148 These parameters can be modified via ``gnt-cluster modify -D …`` and
149 ``gnt-group modify -D …``, and are used at either instance creation (in
150 case of LVM stripes, for example) or at disk “activation” time
153 Rados block device support
154 ++++++++++++++++++++++++++
156 A Rados (http://ceph.com/wiki/Rbd) storage backend has been added,
157 denoted by the ``rbd`` disk template type. This is considered
158 experimental, feedback is welcome. For details on configuring it, see
159 the :doc:`install` document and the :manpage:`gnt-cluster(8)` man page.
164 The existing master IP functionality works well only in simple setups (a
165 single network shared by all nodes); however, if nodes belong to
166 different networks, then the ``/32`` setup and lack of routing
167 information is not enough.
169 To allow the master IP to function well in more complex cases, the
170 system was reworked as follows:
172 - a master IP netmask setting has been added
173 - the master IP activation/turn-down code was moved from the node daemon
175 - whether to run the Ganeti-supplied master IP script or a user-supplied
176 on is a ``gnt-cluster init`` setting
178 Details about the location of the standard and custom setup scripts are
179 in the man page :manpage:`gnt-cluster(8)`; for information about the
180 setup script protocol, look at the Ganeti-supplied script.
185 The `SPICE <http://www.linux-kvm.org/page/SPICE>`_ support has been
188 It is now possible to use TLS-protected connections, and when renewing
189 or changing the cluster certificates (via ``gnt-cluster renew-crypto``,
190 it is now possible to specify spice or spice CA certificates. Also, it
191 is possible to configure a password for SPICE sessions via the
192 hypervisor parameter ``spice_password_file``.
194 There are also new parameters to control the compression and streaming
195 options (e.g. ``spice_image_compression``, ``spice_streaming_video``,
196 etc.). For details, see the man page :manpage:`gnt-instance(8)` and look
197 for the spice parameters.
199 Lastly, it is now possible to see the SPICE connection information via
200 ``gnt-instance console``.
205 A new tool (``tools/ovfconverter``) has been added that supports
206 conversion between Ganeti and the `Open Virtualization Format
207 <http://en.wikipedia.org/wiki/Open_Virtualization_Format>`_ (both to and
210 This relies on the ``qemu-img`` tool to convert the disk formats, so the
211 actual compatibility with other virtualization solutions depends on it.
216 The configuration query daemon (``ganeti-confd``) is now optional, and
217 has been rewritten in Haskell; whether to use the daemon at all, use the
218 Python (default) or the Haskell version is selectable at configure time
219 via the ``--enable-confd`` parameter, which can take one of the
220 ``haskell``, ``python`` or ``no`` values. If not used, disabling the
221 daemon will result in a smaller footprint; for larger systems, we
222 welcome feedback on the Haskell version which might become the default
225 If you want to use ``gnt-node list-drbd`` you need to have the Haskell
226 daemon running. The Python version doesn't implement the new call.
229 User interface changes
230 ~~~~~~~~~~~~~~~~~~~~~~
232 We have replaced the ``--disks`` option of ``gnt-instance
233 replace-disks`` with a more flexible ``--disk`` option, which allows
234 adding and removing disks at arbitrary indices (Issue 188). Furthermore,
235 disk size and mode can be changed upon recreation (via ``gnt-instance
236 recreate-disks``, which accepts the same ``--disk`` option).
238 As many people are used to a ``show`` command, we have added that as an
239 alias to ``info`` on all ``gnt-*`` commands.
241 The ``gnt-instance grow-disk`` command has a new mode in which it can
242 accept the target size of the disk, instead of the delta; this can be
243 more safe since two runs in absolute mode will be idempotent, and
244 sometimes it's also easier to specify the desired size directly.
246 Also the handling of instances with regard to offline secondaries has
247 been improved. Instance operations should not fail because one of it's
248 secondary nodes is offline, even though it's safe to proceed.
250 A new command ``list-drbd`` has been added to the ``gnt-node`` script to
251 support debugging of DRBD issues on nodes. It provides a mapping of DRBD
252 minors to instance name.
257 RAPI coverage has improved, with (for example) new resources for
258 recreate-disks, node power-cycle, etc.
263 There is partial support for ``xl`` in the Xen hypervisor; feedback is
266 Python 2.7 is better supported, and after Ganeti 2.6 we will investigate
267 whether to still support Python 2.4 or move to Python 2.6 as minimum
270 Support for Fedora has been slightly improved; the provided example
271 init.d script should work better on it and the INSTALL file should
272 document the needed dependencies.
277 The deprecated ``QueryLocks`` LUXI request has been removed. Use
278 ``Query(what=QR_LOCK, ...)`` instead.
280 The LUXI requests :pyeval:`luxi.REQ_QUERY_JOBS`,
281 :pyeval:`luxi.REQ_QUERY_INSTANCES`, :pyeval:`luxi.REQ_QUERY_NODES`,
282 :pyeval:`luxi.REQ_QUERY_GROUPS`, :pyeval:`luxi.REQ_QUERY_EXPORTS` and
283 :pyeval:`luxi.REQ_QUERY_TAGS` are deprecated and will be removed in a
284 future version. :pyeval:`luxi.REQ_QUERY` should be used instead.
286 RAPI client: ``CertificateError`` now derives from
287 ``GanetiApiError``. This should make it more easy to handle Ganeti
290 Deprecation warnings due to PyCrypto/paramiko import in
291 ``tools/setup-ssh`` have been silenced, as usually they are safe; please
292 make sure to run an up-to-date paramiko version, if you use this tool.
294 The QA scripts now depend on Python 2.5 or above (the main code base
295 still works with Python 2.4).
297 The configuration file (``config.data``) is now written without
298 indentation for performance reasons; if you want to edit it, it can be
299 re-formatted via ``tools/fmtjson``.
301 A number of bugs has been fixed in the cluster merge tool.
303 ``x509`` certification verification (used in import-export) has been
304 changed to allow the same clock skew as permitted by the cluster
305 verification. This will remove some rare but hard to diagnose errors in
308 The ``LUXI`` protocol has been made more consistent regarding its
309 handling of command arguments. This, however, leads to incompatibility
310 issues with previous versions. Please ensure that you restart Ganeti
311 daemons after the upgrade, otherwise job submission will fail.
317 *(Released Fri, 13 Jul 2012)*
319 Third release candidate for 2.6. The following changes were done from
322 - Fixed ``UpgradeConfig`` w.r.t. to disk parameters on disk objects.
323 - Fixed an inconsistency in the LUXI protocol with the provided
324 arguments (NOT backwards compatible)
325 - Fixed a bug with node groups ipolicy where ``min`` was greater than
326 the cluster ``std`` value
327 - Implemented a new ``gnt-node list-drbd`` call to list DRBD minors for
328 easier instance debugging on nodes (requires ``hconfd`` to work)
334 *(Released Tue, 03 Jul 2012)*
336 Second release candidate for 2.6. The following changes were done from
339 - Fixed ``gnt-cluster verify`` regarding ``master-ip-script`` on non
341 - Fixed a RAPI regression on missing beparams/memory
342 - Fixed redistribution of files on offline nodes
343 - Added possibility to run activate-disks even though secondaries are
344 offline. With this change it relaxes also the strictness on some other
345 commands which use activate disks internally:
346 * ``gnt-instance start|reboot|rename|backup|export``
347 - Made it possible to remove safely an instance if its secondaries are
349 - Made it possible to reinstall even though secondaries are offline
355 *(Released Mon, 25 Jun 2012)*
357 First release candidate for 2.6. The following changes were done from
360 - Fixed bugs with disk parameters and ``rbd`` templates as well as
362 - Made ``gnt-instance modify`` more consistent regarding new NIC/Disk
363 behaviour. It supports now the modify operation
364 - ``hcheck`` implemented to analyze cluster health and possibility of
365 improving health by rebalance
366 - ``hbal`` has been improved in dealing with split instances
372 *(Released Mon, 11 Jun 2012)*
374 Second beta release of 2.6. The following changes were done from beta2
377 - Fixed ``daemon-util`` with non-root user models
378 - Fixed creation of plain instances with ``--no-wait-for-sync``
379 - Fix wrong iv_names when running ``cfgupgrade``
380 - Export more information in RAPI group queries
381 - Fixed bug when changing instance network interfaces
382 - Extended burnin to do NIC changes
383 - query: Added ``<``, ``>``, ``<=``, ``>=`` comparison operators
384 - Changed default for DRBD barriers
385 - Fixed DRBD error reporting for syncer rate
386 - Verify the options on disk parameters
388 And of course various fixes to documentation and improved unittests and
395 *(Released Wed, 23 May 2012)*
397 First beta release of 2.6. The following changes were done from beta1 to
400 - integrated patch for distributions without ``start-stop-daemon``
401 - adapted example init.d script to work on Fedora
402 - fixed log handling in Haskell daemons
403 - adapted checks in the watcher for pycurl linked against libnss
404 - add partial support for ``xl`` instead of ``xm`` for Xen
405 - fixed a type issue in cluster verification
406 - fixed ssconf handling in the Haskell code (was breaking confd in IPv6
409 Plus integrated fixes from the 2.5 branch:
411 - fixed ``kvm-ifup`` to use ``/bin/bash``
412 - fixed parallel build failures
413 - KVM live migration when using a custom keymap
419 *(Released Fri, 11 May 2012)*
421 A small bugfix release.
423 The main issues solved are on the topic of compatibility with newer LVM
426 - fixed parsing of ``lv_attr`` field
427 - adapted to new ``vgreduce --removemissing`` behaviour where sometimes
428 the ``--force`` flag is needed
430 Also on the topic of compatibility, ``tools/lvmstrap`` has been changed
431 to accept kernel 3.x too (was hardcoded to 2.6.*).
433 A regression present in 2.5.0 that broke handling (in the gnt-* scripts)
434 of hook results and that also made display of other errors suboptimal
435 was fixed; the code behaves now like 2.4 and earlier.
437 Another change in 2.5, the cleanup of the OS scripts environment, is too
438 aggressive: it removed even the ``PATH`` variable, which requires the OS
439 scripts to *always* need to export it. Since this is a bit too strict,
440 we now export a minimal PATH, the same that we export for hooks.
442 The fix for issue 201 (Preserve bridge MTU in KVM ifup script) was
443 integrated into this release.
445 Finally, a few other miscellaneous changes were done (no new features,
446 just small improvements):
448 - Fix ``gnt-group --help`` display
449 - Fix hardcoded Xen kernel path
450 - Fix grow-disk handling of invalid units
451 - Update synopsis for ``gnt-cluster repair-disk-sizes``
452 - Accept both PUT and POST in noded (makes future upgrade to 2.6 easier)
458 *(Released Thu, 12 Apr 2012)*
460 Incompatible/important changes and bugfixes
461 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
463 - The default of the ``/2/instances/[instance_name]/rename`` RAPI
464 resource's ``ip_check`` parameter changed from ``True`` to ``False``
465 to match the underlying LUXI interface.
466 - The ``/2/nodes/[node_name]/evacuate`` RAPI resource was changed to use
467 body parameters, see :doc:`RAPI documentation <rapi>`. The server does
468 not maintain backwards-compatibility as the underlying operation
469 changed in an incompatible way. The RAPI client can talk to old
470 servers, but it needs to be told so as the return value changed.
471 - When creating file-based instances via RAPI, the ``file_driver``
472 parameter no longer defaults to ``loop`` and must be specified.
473 - The deprecated ``bridge`` NIC parameter is no longer supported. Use
475 - Support for the undocumented and deprecated RAPI instance creation
476 request format version 0 has been dropped. Use version 1, supported
477 since Ganeti 2.1.3 and :doc:`documented <rapi>`, instead.
478 - Pyparsing 1.4.6 or above is required, see :doc:`installation
479 documentation <install>`.
480 - The "cluster-verify" hooks are now executed per group by the
481 ``OP_CLUSTER_VERIFY_GROUP`` opcode. This maintains the same behavior
482 if you just run ``gnt-cluster verify``, which generates one opcode per
484 - The environment as passed to the OS scripts is cleared, and thus no
485 environment variables defined in the node daemon's environment will be
486 inherited by the scripts.
487 - The :doc:`iallocator <iallocator>` mode ``multi-evacuate`` has been
489 - :doc:`New iallocator modes <design-multi-reloc>` have been added to
490 support operations involving multiple node groups.
491 - Offline nodes are ignored when failing over an instance.
492 - Support for KVM version 1.0, which changed the version reporting format
494 - TCP/IP ports used by DRBD disks are returned to a pool upon instance
496 - ``Makefile`` is now compatible with Automake 1.11.2
497 - Includes all bugfixes made in the 2.4 series
502 - The ganeti-htools project has been merged into the ganeti-core source
503 tree and will be built as part of Ganeti (see :doc:`install-quick`).
504 - Implemented support for :doc:`shared storage <design-shared-storage>`.
505 - Add support for disks larger than 2 TB in ``lvmstrap`` by supporting
506 GPT-style partition tables (requires `parted
507 <http://www.gnu.org/s/parted/>`_).
508 - Added support for floppy drive and 2nd CD-ROM drive in KVM hypervisor.
509 - Allowed adding tags on instance creation.
510 - Export instance tags to hooks (``INSTANCE_TAGS``, see :doc:`hooks`)
511 - Allow instances to be started in a paused state, enabling the user to
512 see the complete console output on boot using the console.
513 - Added new hypervisor flag to control default reboot behaviour
514 (``reboot_behavior``).
515 - Added support for KVM keymaps (hypervisor parameter ``keymap``).
516 - Improved out-of-band management support:
518 - Added ``gnt-node health`` command reporting the health status of
520 - Added ``gnt-node power`` command to manage power status of nodes.
521 - Added command for emergency power-off (EPO), ``gnt-cluster epo``.
523 - Instance migration can fall back to failover if instance is not
525 - Filters can be used when listing nodes, instances, groups and locks;
526 see *ganeti(7)* manpage.
527 - Added post-execution status as variables to :doc:`hooks <hooks>`
529 - Instance tags are exported/imported together with the instance.
530 - When given an explicit job ID, ``gnt-job info`` will work for archived
532 - Jobs can define dependencies on other jobs (not yet supported via
533 RAPI or command line, but used by internal commands and usable via
536 - Lock monitor (``gnt-debug locks``) shows jobs waiting for
539 - Instance failover is now available as a RAPI resource
540 (``/2/instances/[instance_name]/failover``).
541 - ``gnt-instance info`` defaults to static information if primary node
543 - Opcodes have a new ``comment`` attribute.
544 - Added basic SPICE support to KVM hypervisor.
545 - ``tools/ganeti-listrunner`` allows passing of arguments to executable.
547 Node group improvements
548 ~~~~~~~~~~~~~~~~~~~~~~~
550 - ``gnt-cluster verify`` has been modified to check groups separately,
551 thereby improving performance.
552 - Node group support has been added to ``gnt-cluster verify-disks``,
553 which now operates per node group.
554 - Watcher has been changed to work better with node groups.
556 - One process and state file per node group.
557 - Slow watcher in one group doesn't block other group's watcher.
559 - Added new command, ``gnt-group evacuate``, to move all instances in a
560 node group to other groups.
561 - Added ``gnt-instance change-group`` to move an instance to another
563 - ``gnt-cluster command`` and ``gnt-cluster copyfile`` now support
564 per-group operations.
565 - Node groups can be tagged.
566 - Some operations switch from an exclusive to a shared lock as soon as
568 - Instance's primary and secondary nodes' groups are now available as
569 query fields (``pnode.group``, ``pnode.group.uuid``, ``snodes.group``
570 and ``snodes.group.uuid``).
575 - Numerous updates to documentation and manpages.
577 - :doc:`RAPI <rapi>` documentation now has detailed parameter
579 - Some opcode/job results are now also documented, see :doc:`RAPI
582 - A lockset's internal lock is now also visible in lock monitor.
583 - Log messages from job queue workers now contain information about the
584 opcode they're processing.
585 - ``gnt-instance console`` no longer requires the instance lock.
586 - A short delay when waiting for job changes reduces the number of LUXI
587 requests significantly.
588 - DRBD metadata volumes are overwritten with zeros during disk creation.
589 - Out-of-band commands no longer acquire the cluster lock in exclusive
591 - ``devel/upload`` now uses correct permissions for directories.
597 *(Released Fri, 23 Mar 2012)*
599 This was the sixth release candidate of the 2.5 series.
605 *(Released Mon, 9 Jan 2012)*
607 This was the fifth release candidate of the 2.5 series.
613 *(Released Thu, 27 Oct 2011)*
615 This was the fourth release candidate of the 2.5 series.
621 *(Released Wed, 26 Oct 2011)*
623 This was the third release candidate of the 2.5 series.
629 *(Released Tue, 18 Oct 2011)*
631 This was the second release candidate of the 2.5 series.
637 *(Released Tue, 4 Oct 2011)*
639 This was the first release candidate of the 2.5 series.
645 *(Released Wed, 31 Aug 2011)*
647 This was the third beta release of the 2.5 series.
653 *(Released Mon, 22 Aug 2011)*
655 This was the second beta release of the 2.5 series.
661 *(Released Fri, 12 Aug 2011)*
663 This was the first beta release of the 2.5 series.
669 *(Released Thu, 27 Oct 2011)*
671 - Fixed bug when parsing command line parameter values ending in
673 - Fixed assertion error after unclean master shutdown
674 - Disable HTTP client pool for RPC, significantly reducing memory usage
676 - Fixed queue archive creation with wrong permissions
682 *(Released Tue, 23 Aug 2011)*
686 - Fixed documentation for importing with ``--src-dir`` option
687 - Fixed a bug in ``ensure-dirs`` with queue/archive permissions
688 - Fixed a parsing issue with DRBD 8.3.11 in the Linux kernel
694 *(Released Fri, 5 Aug 2011)*
696 Many bug-fixes and a few small features:
698 - Fixed argument order in ``ReserveLV`` and ``ReserveMAC`` which caused
699 issues when you tried to add an instance with two MAC addresses in one
701 - KVM: fixed per-instance stored UID value
702 - KVM: configure bridged NICs at migration start
703 - KVM: Fix a bug where instance will not start with never KVM versions
705 - Added OS search path to ``gnt-cluster info``
706 - Fixed an issue with ``file_storage_dir`` where you were forced to
707 provide an absolute path, but the documentation states it is a
708 relative path, the documentation was right
709 - Added a new parameter to instance stop/start called ``--no-remember``
710 that will make the state change to not be remembered
711 - Implemented ``no_remember`` at RAPI level
712 - Improved the documentation
713 - Node evacuation: don't call IAllocator if node is already empty
714 - Fixed bug in DRBD8 replace disks on current nodes
715 - Fixed bug in recreate-disks for DRBD instances
716 - Moved assertion checking locks in ``gnt-instance replace-disks``
717 causing it to abort with not owning the right locks for some situation
718 - Job queue: Fixed potential race condition when cancelling queued jobs
719 - Fixed off-by-one bug in job serial generation
720 - ``gnt-node volumes``: Fix instance names
721 - Fixed aliases in bash completion
722 - Fixed a bug in reopening log files after being sent a SIGHUP
723 - Added a flag to burnin to allow specifying VCPU count
724 - Bugfixes to non-root Ganeti configuration
730 *(Released Thu, 12 May 2011)*
732 Many bug-fixes and a few new small features:
734 - Fixed a bug related to log opening failures
735 - Fixed a bug in instance listing with orphan instances
736 - Fixed a bug which prevented resetting the cluster-level node parameter
737 ``oob_program`` to the default
738 - Many fixes related to the ``cluster-merge`` tool
739 - Fixed a race condition in the lock monitor, which caused failures
740 during (at least) creation of many instances in parallel
741 - Improved output for gnt-job info
742 - Removed the quiet flag on some ssh calls which prevented debugging
744 - Improved the N+1 failure messages in cluster verify by actually
745 showing the memory values (needed and available)
746 - Increased lock attempt timeouts so that when executing long operations
747 (e.g. DRBD replace-disks) other jobs do not enter 'blocking acquire'
748 too early and thus prevent the use of the 'fair' mechanism
749 - Changed instance query data (``gnt-instance info``) to not acquire
750 locks unless needed, thus allowing its use on locked instance if only
751 static information is asked for
752 - Improved behaviour with filesystems that do not support rename on an
754 - Fixed the behaviour of ``prealloc_wipe_disks`` cluster parameter which
755 kept locks on all nodes during the wipe, which is unneeded
756 - Fixed ``gnt-watcher`` handling of errors during hooks execution
757 - Fixed bug in ``prealloc_wipe_disks`` with small disk sizes (less than
758 10GiB) which caused the wipe to fail right at the end in some cases
759 - Fixed master IP activation when doing master failover with no-voting
760 - Fixed bug in ``gnt-node add --readd`` which allowed the re-adding of
761 the master node itself
762 - Fixed potential data-loss in under disk full conditions, where Ganeti
763 wouldn't check correctly the return code and would consider
764 partially-written files 'correct'
765 - Fixed bug related to multiple VGs and DRBD disk replacing
766 - Added new disk parameter ``metavg`` that allows placement of the meta
767 device for DRBD in a different volume group
768 - Fixed error handling in the node daemon when the system libc doesn't
769 have major number 6 (i.e. if ``libc.so.6`` is not the actual libc)
770 - Fixed lock release during replace-disks, which kept cluster-wide locks
771 when doing disk replaces with an iallocator script
772 - Added check for missing bridges in cluster verify
773 - Handle EPIPE errors while writing to the terminal better, so that
774 piping the output to e.g. ``less`` doesn't cause a backtrace
775 - Fixed rare case where a ^C during Luxi calls could have been
776 interpreted as server errors, instead of simply terminating
777 - Fixed a race condition in LUGroupAssignNodes (``gnt-group
779 - Added a few more parameters to the KVM hypervisor, allowing a second
780 CDROM, custom disk type for CDROMs and a floppy image
781 - Removed redundant message in instance rename when the name is given
783 - Added option to ``gnt-instance recreate-disks`` to allow creating the
784 disks on new nodes, allowing recreation when the original instance
785 nodes are completely gone
786 - Added option when converting disk templates to DRBD to skip waiting
787 for the resync, in order to make the instance available sooner
788 - Added two new variables to the OS scripts environment (containing the
790 - Made the root_path and optional parameter for the xen-pvm hypervisor,
791 to allow use of ``pvgrub`` as bootloader
792 - Changed the instance memory modifications to only check out-of-memory
793 conditions on memory increases, and turned the secondary node warnings
794 into errors (they can still be overridden via ``--force``)
795 - Fixed the handling of a corner case when the Python installation gets
796 corrupted (e.g. a bad disk) while ganeti-noded is running and we try
797 to execute a command that doesn't exist
798 - Fixed a bug in ``gnt-instance move`` (LUInstanceMove) when the primary
799 node of the instance returned failures during instance shutdown; this
800 adds the option ``--ignore-consistency`` to gnt-instance move
802 And as usual, various improvements to the error messages, documentation
809 *(Released Wed, 09 Mar 2011)*
811 Emergency bug-fix release. ``tools/cfgupgrade`` was broken and overwrote
812 the RAPI users file if run twice (even with ``--dry-run``).
814 The release fixes that bug (nothing else changed).
820 *(Released Mon, 07 Mar 2011)*
822 Final 2.4.0 release. Just a few small fixes:
824 - Fixed RAPI node evacuate
825 - Fixed the kvm-ifup script
826 - Fixed internal error handling for special job cases
827 - Updated man page to specify the escaping feature for options
833 *(Released Mon, 28 Feb 2011)*
835 A critical fix for the ``prealloc_wipe_disks`` feature: it is possible
836 that this feature wiped the disks of the wrong instance, leading to loss
841 - Fixed title of query field containing instance name
842 - Expanded the glossary in the documentation
843 - Fixed one unittest (internal issue)
849 *(Released Mon, 21 Feb 2011)*
851 A number of bug fixes plus just a couple functionality changes.
853 On the user-visible side, the ``gnt-* list`` command output has changed
854 with respect to "special" field states. The current rc1 style of display
855 can be re-enabled by passing a new ``--verbose`` (``-v``) flag, but in
856 the default output mode special fields states are displayed as follows:
858 - Offline resource: ``*``
859 - Unavailable/not applicable: ``-``
860 - Data missing (RPC failure): ``?``
861 - Unknown field: ``??``
863 Another user-visible change is the addition of ``--force-join`` to
868 - ``tools/cluster-merge`` has seen many fixes and is now enabled again
869 - Fixed regression in RAPI/instance reinstall where all parameters were
870 required (instead of optional)
871 - Fixed ``gnt-cluster repair-disk-sizes``, was broken since Ganeti 2.2
872 - Fixed iallocator usage (offline nodes were not considered offline)
873 - Fixed ``gnt-node list`` with respect to non-vm_capable nodes
874 - Fixed hypervisor and OS parameter validation with respect to
876 - Fixed ``gnt-cluster verify`` with respect to offline nodes (mostly
878 - Fixed ``tools/listrunner`` with respect to agent-based usage
884 *(Released Fri, 4 Feb 2011)*
886 Many changes and fixes since the beta1 release. While there were some
887 internal changes, the code has been mostly stabilised for the RC
890 Note: the dumb allocator was removed in this release, as it was not kept
891 up-to-date with the IAllocator protocol changes. It is recommended to
892 use the ``hail`` command from the ganeti-htools package.
894 Note: the 2.4 and up versions of Ganeti are not compatible with the
895 0.2.x branch of ganeti-htools. You need to upgrade to
896 ganeti-htools-0.3.0 (or later).
898 Regressions fixed from 2.3
899 ~~~~~~~~~~~~~~~~~~~~~~~~~~
901 - Fixed the ``gnt-cluster verify-disks`` command
902 - Made ``gnt-cluster verify-disks`` work in parallel (as opposed to
904 - Fixed disk adoption breakage
905 - Fixed wrong headers in instance listing for field aliases
910 - Fixed corner case in KVM handling of NICs
911 - Fixed many cases of wrong handling of non-vm_capable nodes
912 - Fixed a bug where a missing instance symlink was not possible to
913 recreate with any ``gnt-*`` command (now ``gnt-instance
914 activate-disks`` does it)
915 - Fixed the volume group name as reported by ``gnt-cluster
917 - Increased timeouts for the import-export code, hopefully leading to
918 fewer aborts due network or instance timeouts
919 - Fixed bug in ``gnt-node list-storage``
920 - Fixed bug where not all daemons were started on cluster
921 initialisation, but only at the first watcher run
922 - Fixed many bugs in the OOB implementation
923 - Fixed watcher behaviour in presence of instances with offline
925 - Fixed instance list output for instances running on the wrong node
926 - a few fixes to the cluster-merge tool, but it still cannot merge
927 multi-node groups (currently it is not recommended to use this tool)
933 - Improved network configuration for the KVM hypervisor
934 - Added e1000 as a supported NIC for Xen-HVM
935 - Improved the lvmstrap tool to also be able to use partitions, as
936 opposed to full disks
937 - Improved speed of disk wiping (the cluster parameter
938 ``prealloc_wipe_disks``, so that it has a low impact on the total time
939 of instance creations
940 - Added documentation for the OS parameters
941 - Changed ``gnt-instance deactivate-disks`` so that it can work if the
942 hypervisor is not responding
943 - Added display of blacklisted and hidden OS information in
945 - Extended ``gnt-cluster verify`` to also validate hypervisor, backend,
946 NIC and node parameters, which might create problems with currently
947 invalid (but undetected) configuration files, but prevents validation
948 failures when unrelated parameters are modified
949 - Changed cluster initialisation to wait for the master daemon to become
951 - Expanded the RAPI interface:
953 - Added config redistribution resource
954 - Added activation/deactivation of instance disks
955 - Added export of console information
957 - Implemented log file reopening on SIGHUP, which allows using
958 logrotate(8) for the Ganeti log files
959 - Added a basic OOB helper script as an example
965 *(Released Fri, 14 Jan 2011)*
970 - Fixed timezone issues when formatting timestamps
971 - Added support for node groups, available via ``gnt-group`` and other
973 - Added out-of-band framework and management, see :doc:`design
974 document <design-oob>`
975 - Removed support for roman numbers from ``gnt-node list`` and
976 ``gnt-instance list``.
977 - Allowed modification of master network interface via ``gnt-cluster
978 modify --master-netdev``
979 - Accept offline secondaries while shutting down instance disks
980 - Added ``blockdev_prefix`` parameter to Xen PVM and HVM hypervisors
981 - Added support for multiple LVM volume groups
982 - Avoid sorting nodes for ``gnt-node list`` if specific nodes are
984 - Added commands to list available fields:
986 - ``gnt-node list-fields``
987 - ``gnt-group list-fields``
988 - ``gnt-instance list-fields``
990 - Updated documentation and man pages
995 - Moved ``rapi_users`` file into separate directory, now named
996 ``.../ganeti/rapi/users``, ``cfgupgrade`` moves the file and creates a
998 - Added new tool for running commands on many machines,
999 ``tools/ganeti-listrunner``
1000 - Implemented more verbose result in ``OpInstanceConsole`` opcode, also
1001 improving the ``gnt-instance console`` output
1002 - Allowed customisation of disk index separator at ``configure`` time
1003 - Export node group allocation policy to :doc:`iallocator <iallocator>`
1004 - Added support for non-partitioned md disks in ``lvmstrap``
1005 - Added script to gracefully power off KVM instances
1006 - Split ``utils`` module into smaller parts
1007 - Changed query operations to return more detailed information, e.g.
1008 whether an information is unavailable due to an offline node. To use
1009 this new functionality, the LUXI call ``Query`` must be used. Field
1010 information is now stored by the master daemon and can be retrieved
1011 using ``QueryFields``. Instances, nodes and groups can also be queried
1012 using the new opcodes ``OpQuery`` and ``OpQueryFields`` (not yet
1013 exposed via RAPI). The following commands make use of this
1014 infrastructure change:
1016 - ``gnt-group list``
1017 - ``gnt-group list-fields``
1019 - ``gnt-node list-fields``
1020 - ``gnt-instance list``
1021 - ``gnt-instance list-fields``
1022 - ``gnt-debug locks``
1027 - New RAPI resources (see :doc:`rapi`):
1031 - ``/2/groups/[group_name]``
1032 - ``/2/groups/[group_name]/assign-nodes``
1033 - ``/2/groups/[group_name]/modify``
1034 - ``/2/groups/[group_name]/rename``
1035 - ``/2/instances/[instance_name]/disk/[disk_index]/grow``
1039 - Implemented ``no_install`` for instance creation
1040 - Implemented OS parameters for instance reinstallation, allowing
1041 use of special settings on reinstallation (e.g. for preserving data)
1046 - Added IPv6 support in import/export
1047 - Pause DRBD synchronization while wiping disks on instance creation
1048 - Updated unittests and QA scripts
1049 - Improved network parameters passed to KVM
1050 - Converted man pages from docbook to reStructuredText
1056 *(Released Mon, 20 Dec 2010)*
1058 Released version 2.3.1~rc1 without any changes.
1064 *(Released Wed, 1 Dec 2010)*
1066 - impexpd: Disable OpenSSL compression in socat if possible (backport
1067 from master, commit e90739d625b, see :doc:`installation guide
1068 <install-quick>` for details)
1069 - Changed unittest coverage report to exclude test scripts
1070 - Added script to check version format
1076 *(Released Wed, 1 Dec 2010)*
1078 Released version 2.3.0~rc1 without any changes.
1084 *(Released Fri, 19 Nov 2010)*
1086 A number of bugfixes and documentation updates:
1088 - Update ganeti-os-interface documentation
1089 - Fixed a bug related to duplicate MACs or similar items which should be
1091 - Fix breakage in OS state modify
1092 - Reinstall instance: disallow offline secondaries (fixes bug related to
1093 OS changing but reinstall failing)
1094 - plus all the other fixes between 2.2.1 and 2.2.2
1100 *(Released Tue, 2 Nov 2010)*
1102 - Fixed clearing of the default iallocator using ``gnt-cluster modify``
1103 - Fixed master failover race with watcher
1104 - Fixed a bug in ``gnt-node modify`` which could lead to an inconsistent
1106 - Accept previously stopped instance for export with instance removal
1107 - Simplify and extend the environment variables for instance OS scripts
1108 - Added new node flags, ``master_capable`` and ``vm_capable``
1109 - Added optional instance disk wiping prior during allocation. This is a
1110 cluster-wide option and can be set/modified using
1111 ``gnt-cluster {init,modify} --prealloc-wipe-disks``.
1112 - Added IPv6 support, see :doc:`design document <design-2.3>` and
1113 :doc:`install-quick`
1114 - Added a new watcher option (``--ignore-pause``)
1115 - Added option to ignore offline node on instance start/stop
1116 (``--ignore-offline``)
1117 - Allow overriding OS parameters with ``gnt-instance reinstall``
1118 - Added ability to change node's secondary IP address using ``gnt-node
1120 - Implemented privilege separation for all daemons except
1121 ``ganeti-noded``, see ``configure`` options
1122 - Complain if an instance's disk is marked faulty in ``gnt-cluster
1124 - Implemented job priorities (see ``ganeti(7)`` manpage)
1125 - Ignore failures while shutting down instances during failover from
1127 - Exit daemon's bootstrap process only once daemon is ready
1128 - Export more information via ``LUInstanceQuery``/remote API
1129 - Improved documentation, QA and unittests
1130 - RAPI daemon now watches ``rapi_users`` all the time and doesn't need a
1131 restart if the file was created or changed
1132 - Added LUXI protocol version sent with each request and response,
1133 allowing detection of server/client mismatches
1134 - Moved the Python scripts among gnt-* and ganeti-* into modules
1135 - Moved all code related to setting up SSH to an external script,
1137 - Infrastructure changes for node group support in future versions
1143 *(Released Fri, 19 Nov 2010)*
1145 A few small bugs fixed, and some improvements to the build system:
1147 - Fix documentation regarding conversion to drbd
1148 - Fix validation of parameters in cluster modify (``gnt-cluster modify
1150 - Fix error handling in node modify with multiple changes
1151 - Allow remote imports without checked names
1157 *(Released Tue, 19 Oct 2010)*
1159 - Disable SSL session ID cache in RPC client
1165 *(Released Thu, 14 Oct 2010)*
1167 - Fix interaction between Curl/GnuTLS and the Python's HTTP server
1168 (thanks Apollon Oikonomopoulos!), finally allowing the use of Curl
1170 - Fix problems with interaction between Curl and Python's HTTP server,
1171 resulting in increased speed in many RPC calls
1172 - Improve our release script to prevent breakage with older aclocal and
1179 *(Released Thu, 7 Oct 2010)*
1181 - Fixed issue 125, replace hardcoded "xenvg" in ``gnt-cluster`` with
1182 value retrieved from master
1183 - Added support for blacklisted or hidden OS definitions
1184 - Added simple lock monitor (accessible via (``gnt-debug locks``)
1185 - Added support for -mem-path in KVM hypervisor abstraction layer
1186 - Allow overriding instance parameters in tool for inter-cluster
1187 instance moves (``tools/move-instance``)
1188 - Improved opcode summaries (e.g. in ``gnt-job list``)
1189 - Improve consistency of OS listing by sorting it
1190 - Documentation updates
1196 *(Released Fri, 8 Oct 2010)*
1198 - Rebuild with a newer autotools version, to fix python 2.6 compatibility
1204 *(Released Mon, 4 Oct 2010)*
1206 - Fixed regression in ``gnt-instance rename``
1212 *(Released Wed, 22 Sep 2010)*
1214 - Fixed OS_VARIANT variable for OS scripts
1215 - Fixed cluster tag operations via RAPI
1216 - Made ``setup-ssh`` exit with non-zero code if an error occurred
1217 - Disabled RAPI CA checks in watcher
1223 *(Released Mon, 23 Aug 2010)*
1225 - Support DRBD versions of the format "a.b.c.d"
1227 - Re-introduce support for usage from multiple threads in RAPI client
1228 - Instance renames and modify via RAPI
1229 - Work around race condition between processing and archival in job
1231 - Mark opcodes following failed one as failed, too
1232 - Job field ``lock_status`` was removed due to difficulties making it
1233 work with the changed job queue in Ganeti 2.2; a better way to monitor
1234 locks is expected for a later 2.2.x release
1235 - Fixed dry-run behaviour with many commands
1236 - Support ``ssh-agent`` again when adding nodes
1237 - Many additional bugfixes
1243 *(Released Fri, 30 Jul 2010)*
1245 Important change: the internal RPC mechanism between Ganeti nodes has
1246 changed from using a home-grown http library (based on the Python base
1247 libraries) to use the PycURL library. This requires that PycURL is
1248 installed on nodes. Please note that on Debian/Ubuntu, PycURL is linked
1249 against GnuTLS by default. cURL's support for GnuTLS had known issues
1250 before cURL 7.21.0 and we recommend using the latest cURL release or
1251 linking against OpenSSL. Most other distributions already link PycURL
1252 and cURL against OpenSSL. The command::
1254 python -c 'import pycurl; print pycurl.version'
1256 can be used to determine the libraries PycURL and cURL are linked
1259 Other significant changes:
1261 - Rewrote much of the internals of the job queue, in order to achieve
1262 better parallelism; this decouples job query operations from the job
1263 processing, and it should allow much nicer behaviour of the master
1264 daemon under load, and it also has uncovered some long-standing bugs
1265 related to the job serialisation (now fixed)
1266 - Added a default iallocator setting to the cluster parameters,
1267 eliminating the need to always pass nodes or an iallocator for
1268 operations that require selection of new node(s)
1269 - Added experimental support for the LXC virtualization method
1270 - Added support for OS parameters, which allows the installation of
1271 instances to pass parameter to OS scripts in order to customise the
1273 - Added a hypervisor parameter controlling the migration type (live or
1274 non-live), since hypervisors have various levels of reliability; this
1275 has renamed the 'live' parameter to 'mode'
1276 - Added a cluster parameter ``reserved_lvs`` that denotes reserved
1277 logical volumes, meaning that cluster verify will ignore them and not
1278 flag their presence as errors
1279 - The watcher will now reset the error count for failed instances after
1280 8 hours, thus allowing self-healing if the problem that caused the
1281 instances to be down/fail to start has cleared in the meantime
1282 - Added a cluster parameter ``drbd_usermode_helper`` that makes Ganeti
1283 check for, and warn, if the drbd module parameter ``usermode_helper``
1284 is not consistent with the cluster-wide setting; this is needed to
1285 make diagnose easier of failed drbd creations
1286 - Started adding base IPv6 support, but this is not yet
1287 enabled/available for use
1288 - Rename operations (cluster, instance) will now return the new name,
1289 which is especially useful if a short name was passed in
1290 - Added support for instance migration in RAPI
1291 - Added a tool to pre-configure nodes for the SSH setup, before joining
1292 them to the cluster; this will allow in the future a simplified model
1293 for node joining (but not yet fully enabled in 2.2); this needs the
1294 paramiko python library
1295 - Fixed handling of name-resolving errors
1296 - Fixed consistency of job results on the error path
1297 - Fixed master-failover race condition when executed multiple times in
1299 - Fixed many bugs related to the job queue (mostly introduced during the
1300 2.2 development cycle, so not all are impacting 2.1)
1301 - Fixed instance migration with missing disk symlinks
1302 - Fixed handling of unknown jobs in ``gnt-job archive``
1303 - And many other small fixes/improvements
1307 - Enhanced both the unittest and the QA coverage
1308 - Switched the opcode validation to a generic model, and extended the
1309 validation to all opcode parameters
1310 - Changed more parts of the code that write shell scripts to use the
1312 - Switched the master daemon to use the asyncore library for the Luxi
1319 *(Released Thu, 17 Jun 2010)*
1321 - Added tool (``move-instance``) and infrastructure to move instances
1322 between separate clusters (see :doc:`separate documentation
1323 <move-instance>` and :doc:`design document <design-2.2>`)
1324 - Added per-request RPC timeout
1325 - RAPI now requires a Content-Type header for requests with a body (e.g.
1326 ``PUT`` or ``POST``) which must be set to ``application/json`` (see
1327 :rfc:`2616` (HTTP/1.1), section 7.2.1)
1328 - ``ganeti-watcher`` attempts to restart ``ganeti-rapi`` if RAPI is not
1330 - Implemented initial support for running Ganeti daemons as separate
1331 users, see configure-time flags ``--with-user-prefix`` and
1332 ``--with-group-prefix`` (only ``ganeti-rapi`` is supported at this
1334 - Instances can be removed after export (``gnt-backup export
1335 --remove-instance``)
1336 - Self-signed certificates generated by Ganeti now use a 2048 bit RSA
1337 key (instead of 1024 bit)
1338 - Added new cluster configuration file for cluster domain secret
1339 - Import/export now use SSL instead of SSH
1340 - Added support for showing estimated time when exporting an instance,
1341 see the ``ganeti-os-interface(7)`` manpage and look for
1348 *(Released Tue, 16 Nov 2010)*
1350 Some more bugfixes. Unless critical bugs occur, this will be the last
1353 - Fix case of MAC special-values
1354 - Fix mac checker regex
1355 - backend: Fix typo causing "out of range" error
1356 - Add missing --units in gnt-instance list man page
1362 *(Released Tue, 24 Aug 2010)*
1365 - Don't ignore secondary node silently on non-mirrored disk templates
1367 - Fix --master-netdev arg name in gnt-cluster(8) (issue 114)
1368 - Fix usb_mouse parameter breaking with vnc_console (issue 109)
1369 - Properly document the usb_mouse parameter
1370 - Fix path in ganeti-rapi(8) (issue 116)
1371 - Adjust error message when the ganeti user's .ssh directory is
1373 - Add same-node-check when changing the disk template to drbd
1379 *(Released Fri, 16 Jul 2010)*
1382 - Add an option to only select some reboot types during qa/burnin.
1383 (on some hypervisors consequent reboots are not supported)
1384 - Fix infrequent race condition in master failover. Sometimes the old
1385 master ip address would be still detected as up for a short time
1386 after it was removed, causing failover to fail.
1387 - Decrease mlockall warnings when the ctypes module is missing. On
1388 Python 2.4 we support running even if no ctypes module is installed,
1389 but we were too verbose about this issue.
1390 - Fix building on old distributions, on which man doesn't have a
1392 - Fix RAPI not to ignore the MAC address on instance creation
1393 - Implement the old instance creation format in the RAPI client.
1399 *(Released Thu, 01 Jul 2010)*
1401 A small bugfix release:
1402 - Fix disk adoption: broken by strict --disk option checking in 2.1.4
1403 - Fix batch-create: broken in the whole 2.1 series due to a lookup on
1404 a non-existing option
1405 - Fix instance create: the --force-variant option was ignored
1406 - Improve pylint 0.21 compatibility and warnings with Python 2.6
1407 - Fix modify node storage with non-FQDN arguments
1408 - Fix RAPI client to authenticate under Python 2.6 when used
1409 for more than 5 requests needing authentication
1410 - Fix gnt-instance modify -t (storage) giving a wrong error message
1411 when converting a non-shutdown drbd instance to plain
1417 *(Released Fri, 18 Jun 2010)*
1419 A small bugfix release:
1421 - Fix live migration of KVM instances started with older Ganeti
1422 versions which had fewer hypervisor parameters
1423 - Fix gnt-instance grow-disk on down instances
1424 - Fix an error-reporting bug during instance migration
1425 - Better checking of the ``--net`` and ``--disk`` values, to avoid
1426 silently ignoring broken ones
1427 - Fix an RPC error reporting bug affecting, for example, RAPI client
1429 - Fix bug triggered by different API version os-es on different nodes
1430 - Fix a bug in instance startup with custom hvparams: OS level
1431 parameters would fail to be applied.
1432 - Fix the RAPI client under Python 2.6 (but more work is needed to
1433 make it work completely well with OpenSSL)
1434 - Fix handling of errors when resolving names from DNS
1440 *(Released Thu, 3 Jun 2010)*
1442 A medium sized development cycle. Some new features, and some
1443 fixes/small improvements/cleanups.
1445 Significant features
1446 ~~~~~~~~~~~~~~~~~~~~
1448 The node deamon now tries to mlock itself into memory, unless the
1449 ``--no-mlock`` flag is passed. It also doesn't fail if it can't write
1450 its logs, and falls back to console logging. This allows emergency
1451 features such as ``gnt-node powercycle`` to work even in the event of a
1452 broken node disk (tested offlining the disk hosting the node's
1453 filesystem and dropping its memory caches; don't try this at home)
1455 KVM: add vhost-net acceleration support. It can be tested with a new
1456 enough version of the kernel and of qemu-kvm.
1458 KVM: Add instance chrooting feature. If you use privilege dropping for
1459 your VMs you can also now force them to chroot to an empty directory,
1460 before starting the emulated guest.
1462 KVM: Add maximum migration bandwith and maximum downtime tweaking
1463 support (requires a new-enough version of qemu-kvm).
1465 Cluster verify will now warn if the master node doesn't have the master
1466 ip configured on it.
1468 Add a new (incompatible) instance creation request format to RAPI which
1469 supports all parameters (previously only a subset was supported, and it
1470 wasn't possible to extend the old format to accomodate all the new
1471 features. The old format is still supported, and a client can check for
1472 this feature, before using it, by checking for its presence in the
1473 ``features`` RAPI resource.
1475 Now with ancient latin support. Try it passing the ``--roman`` option to
1476 ``gnt-instance info``, ``gnt-cluster info`` or ``gnt-node list``
1477 (requires the python-roman module to be installed, in order to work).
1482 As usual many internal code refactorings, documentation updates, and
1485 - Lots of improvements and cleanups to the experimental Remote API
1486 (RAPI) client library.
1487 - A new unit test suite for the core daemon libraries.
1488 - A fix to creating missing directories makes sure the umask is not
1489 applied anymore. This enforces the same directory permissions
1491 - Better handling terminating daemons with ctrl+c (used when running
1492 them in debugging mode).
1493 - Fix a race condition in live migrating a KVM instance, when stat()
1494 on the old proc status file returned EINVAL, which is an unexpected
1496 - Fixed manpage checking with newer man and utf-8 charachters. But now
1497 you need the en_US.UTF-8 locale enabled to build Ganeti from git.
1503 *(Released Fri, 7 May 2010)*
1505 Fix a bug which prevented untagged KVM instances from starting.
1511 *(Released Fri, 7 May 2010)*
1513 Another release with a long development cycle, during which many
1514 different features were added.
1516 Significant features
1517 ~~~~~~~~~~~~~~~~~~~~
1519 The KVM hypervisor now can run the individual instances as non-root, to
1520 reduce the impact of a VM being hijacked due to bugs in the
1521 hypervisor. It is possible to run all instances as a single (non-root)
1522 user, to manually specify a user for each instance, or to dynamically
1523 allocate a user out of a cluster-wide pool to each instance, with the
1524 guarantee that no two instances will run under the same user ID on any
1527 An experimental RAPI client library, that can be used standalone
1528 (without the other Ganeti libraries), is provided in the source tree as
1529 ``lib/rapi/client.py``. Note this client might change its interface in
1530 the future, as we iterate on its capabilities.
1532 A new command, ``gnt-cluster renew-crypto`` has been added to easily
1533 replace the cluster's certificates and crypto keys. This might help in
1534 case they have been compromised, or have simply expired.
1536 A new disk option for instance creation has been added that allows one
1537 to "adopt" currently existing logical volumes, with data
1538 preservation. This should allow easier migration to Ganeti from
1539 unmanaged (or managed via other software) instances.
1541 Another disk improvement is the possibility to convert between redundant
1542 (DRBD) and plain (LVM) disk configuration for an instance. This should
1543 allow better scalability (starting with one node and growing the
1544 cluster, or shrinking a two-node cluster to one node).
1546 A new feature that could help with automated node failovers has been
1547 implemented: if a node sees itself as offline (by querying the master
1548 candidates), it will try to shutdown (hard) all instances and any active
1549 DRBD devices. This reduces the risk of duplicate instances if an
1550 external script automatically failovers the instances on such nodes. To
1551 enable this, the cluster parameter ``maintain_node_health`` should be
1552 enabled; in the future this option (per the name) will enable other
1553 automatic maintenance features.
1555 Instance export/import now will reuse the original instance
1556 specifications for all parameters; that means exporting an instance,
1557 deleting it and the importing it back should give an almost identical
1558 instance. Note that the default import behaviour has changed from
1559 before, where it created only one NIC; now it recreates the original
1562 Cluster verify has added a few new checks: SSL certificates validity,
1563 /etc/hosts consistency across the cluster, etc.
1568 As usual, many internal changes were done, documentation fixes,
1571 - Fixed cluster initialization with disabled cluster storage (regression
1572 introduced in 2.1.1)
1573 - File-based storage supports growing the disks
1574 - Fixed behaviour of node role changes
1575 - Fixed cluster verify for some corner cases, plus a general rewrite of
1576 cluster verify to allow future extension with more checks
1577 - Fixed log spamming by watcher and node daemon (regression introduced
1579 - Fixed possible validation issues when changing the list of enabled
1581 - Fixed cleanup of /etc/hosts during node removal
1582 - Fixed RAPI response for invalid methods
1583 - Fixed bug with hashed passwords in ``ganeti-rapi`` daemon
1584 - Multiple small improvements to the KVM hypervisor (VNC usage, booting
1585 from ide disks, etc.)
1586 - Allow OS changes without re-installation (to record a changed OS
1587 outside of Ganeti, or to allow OS renames)
1588 - Allow instance creation without OS installation (useful for example if
1589 the OS will be installed manually, or restored from a backup not in
1591 - Implemented option to make cluster ``copyfile`` use the replication
1593 - Added list of enabled hypervisors to ssconf (possibly useful for
1595 - Added a new tool (``tools/cfgupgrade12``) that allows upgrading from
1597 - A partial form of node re-IP is possible via node readd, which now
1598 allows changed node primary IP
1599 - Command line utilities now show an informational message if the job is
1601 - The logs of the master daemon now show the PID/UID/GID of the
1608 *(Released Fri, 12 Mar 2010)*
1610 During the 2.1.0 long release candidate cycle, a lot of improvements and
1611 changes have accumulated with were released later as 2.1.1.
1616 The node evacuate command (``gnt-node evacuate``) was significantly
1617 rewritten, and as such the IAllocator protocol was changed - a new
1618 request type has been added. This unfortunate change during a stable
1619 series is designed to improve performance of node evacuations; on
1620 clusters with more than about five nodes and which are well-balanced,
1621 evacuation should proceed in parallel for all instances of the node
1622 being evacuated. As such, any existing IAllocator scripts need to be
1623 updated, otherwise the above command will fail due to the unknown
1624 request. The provided "dumb" allocator has not been updated; but the
1625 ganeti-htools package supports the new protocol since version 0.2.4.
1627 Another important change is increased validation of node and instance
1628 names. This might create problems in special cases, if invalid host
1629 names are being used.
1631 Also, a new layer of hypervisor parameters has been added, that sits at
1632 OS level between the cluster defaults and the instance ones. This allows
1633 customisation of virtualization parameters depending on the installed
1634 OS. For example instances with OS 'X' may have a different KVM kernel
1635 (or any other parameter) than the cluster defaults. This is intended to
1636 help managing a multiple OSes on the same cluster, without manual
1637 modification of each instance's parameters.
1639 A tool for merging clusters, ``cluster-merge``, has been added in the
1640 tools sub-directory.
1645 - Improved the int/float conversions that should make the code more
1646 robust in face of errors from the node daemons
1647 - Fixed the remove node code in case of internal configuration errors
1648 - Fixed the node daemon behaviour in face of inconsistent queue
1649 directory (e.g. read-only file-system where we can't open the files
1651 - Fixed the behaviour of gnt-node modify for master candidate demotion;
1652 now it either aborts cleanly or, if given the new "auto_promote"
1653 parameter, will automatically promote other nodes as needed
1654 - Fixed compatibility with (unreleased yet) Python 2.6.5 that would
1655 completely prevent Ganeti from working
1656 - Fixed bug for instance export when not all disks were successfully
1658 - Fixed behaviour of node add when the new node is slow in starting up
1660 - Fixed handling of signals in the LUXI client, which should improve
1661 behaviour of command-line scripts
1662 - Added checks for invalid node/instance names in the configuration (now
1663 flagged during cluster verify)
1664 - Fixed watcher behaviour for disk activation errors
1665 - Fixed two potentially endless loops in http library, which led to the
1666 RAPI daemon hanging and consuming 100% CPU in some cases
1667 - Fixed bug in RAPI daemon related to hashed passwords
1668 - Fixed bug for unintended qemu-level bridging of multi-NIC KVM
1670 - Enhanced compatibility with non-Debian OSes, but not using absolute
1671 path in some commands and allowing customisation of the ssh
1672 configuration directory
1673 - Fixed possible future issue with new Python versions by abiding to the
1674 proper use of ``__slots__`` attribute on classes
1675 - Added checks that should prevent directory traversal attacks
1676 - Many documentation fixes based on feedback from users
1681 - Added an "early_release" more for instance replace disks and node
1682 evacuate, where we release locks earlier and thus allow higher
1683 parallelism within the cluster
1684 - Added watcher hooks, intended to allow the watcher to restart other
1685 daemons (e.g. from the ganeti-nbma project), but they can be used of
1686 course for any other purpose
1687 - Added a compile-time disable for DRBD barriers, to increase
1688 performance if the administrator trusts the power supply or the
1689 storage system to not lose writes
1690 - Added the option of using syslog for logging instead of, or in
1691 addition to, Ganeti's own log files
1692 - Removed boot restriction for paravirtual NICs for KVM, recent versions
1693 can indeed boot from a paravirtual NIC
1694 - Added a generic debug level for many operations; while this is not
1695 used widely yet, it allows one to pass the debug value all the way to
1697 - Enhanced the hooks environment for instance moves (failovers,
1698 migrations) where the primary/secondary nodes changed during the
1699 operation, by adding {NEW,OLD}_{PRIMARY,SECONDARY} vars
1700 - Enhanced data validations for many user-supplied values; one important
1701 item is the restrictions imposed on instance and node names, which
1702 might reject some (invalid) host names
1703 - Add a configure-time option to disable file-based storage, if it's not
1704 needed; this allows greater security separation between the master
1705 node and the other nodes from the point of view of the inter-node RPC
1707 - Added user notification in interactive tools if job is waiting in the
1708 job queue or trying to acquire locks
1709 - Added log messages when a job is waiting for locks
1710 - Added filtering by node tags in instance operations which admit
1711 multiple instances (start, stop, reboot, reinstall)
1712 - Added a new tool for cluster mergers, ``cluster-merge``
1713 - Parameters from command line which are of the form ``a=b,c=d`` can now
1714 use backslash escapes to pass in values which contain commas,
1715 e.g. ``a=b\\c,d=e`` where the 'a' parameter would get the value
1717 - For KVM, the instance name is the first parameter passed to KVM, so
1718 that it's more visible in the process list
1724 *(Released Tue, 2 Mar 2010)*
1726 Ganeti 2.1 brings many improvements with it. Major changes:
1728 - Added infrastructure to ease automated disk repairs
1729 - Added new daemon to export configuration data in a cheaper way than
1730 using the remote API
1731 - Instance NICs can now be routed instead of being associated with a
1733 - Improved job locking logic to reduce impact of jobs acquiring multiple
1734 locks waiting for other long-running jobs
1736 In-depth implementation details can be found in the Ganeti 2.1 design
1742 - Added chroot hypervisor
1743 - Added more options to xen-hvm hypervisor (``kernel_path`` and
1745 - Added more options to xen-pvm hypervisor (``use_bootloader``,
1746 ``bootloader_path`` and ``bootloader_args``)
1747 - Added the ``use_localtime`` option for the xen-hvm and kvm
1748 hypervisors, and the default value for this has changed to false (in
1749 2.0 xen-hvm always enabled it)
1750 - Added luxi call to submit multiple jobs in one go
1751 - Added cluster initialization option to not modify ``/etc/hosts``
1753 - Added network interface parameters
1754 - Added dry run mode to some LUs
1755 - Added RAPI resources:
1757 - ``/2/instances/[instance_name]/info``
1758 - ``/2/instances/[instance_name]/replace-disks``
1759 - ``/2/nodes/[node_name]/evacuate``
1760 - ``/2/nodes/[node_name]/migrate``
1761 - ``/2/nodes/[node_name]/role``
1762 - ``/2/nodes/[node_name]/storage``
1763 - ``/2/nodes/[node_name]/storage/modify``
1764 - ``/2/nodes/[node_name]/storage/repair``
1766 - Added OpCodes to evacuate or migrate all instances on a node
1767 - Added new command to list storage elements on nodes (``gnt-node
1768 list-storage``) and modify them (``gnt-node modify-storage``)
1769 - Added new ssconf files with master candidate IP address
1770 (``ssconf_master_candidates_ips``), node primary IP address
1771 (``ssconf_node_primary_ips``) and node secondary IP address
1772 (``ssconf_node_secondary_ips``)
1773 - Added ``ganeti-confd`` and a client library to query the Ganeti
1774 configuration via UDP
1775 - Added ability to run hooks after cluster initialization and before
1777 - Added automatic mode for disk replace (``gnt-instance replace-disks
1779 - Added ``gnt-instance recreate-disks`` to re-create (empty) disks
1780 after catastrophic data-loss
1781 - Added ``gnt-node repair-storage`` command to repair damaged LVM volume
1783 - Added ``gnt-instance move`` command to move instances
1784 - Added ``gnt-cluster watcher`` command to control watcher
1785 - Added ``gnt-node powercycle`` command to powercycle nodes
1786 - Added new job status field ``lock_status``
1787 - Added parseable error codes to cluster verification (``gnt-cluster
1788 verify --error-codes``) and made output less verbose (use
1789 ``--verbose`` to restore previous behaviour)
1790 - Added UUIDs to the main config entities (cluster, nodes, instances)
1791 - Added support for OS variants
1792 - Added support for hashed passwords in the Ganeti remote API users file
1794 - Added option to specify maximum timeout on instance shutdown
1795 - Added ``--no-ssh-init`` option to ``gnt-cluster init``
1796 - Added new helper script to start and stop Ganeti daemons
1797 (``daemon-util``), with the intent to reduce the work necessary to
1798 adjust Ganeti for non-Debian distributions and to start/stop daemons
1800 - Added more unittests
1801 - Fixed critical bug in ganeti-masterd startup
1802 - Removed the configure-time ``kvm-migration-port`` parameter, this is
1803 now customisable at the cluster level for both the KVM and Xen
1804 hypervisors using the new ``migration_port`` parameter
1805 - Pass ``INSTANCE_REINSTALL`` variable to OS installation script when
1806 reinstalling an instance
1807 - Allowed ``@`` in tag names
1808 - Migrated to Sphinx (http://sphinx.pocoo.org/) for documentation
1809 - Many documentation updates
1810 - Distribute hypervisor files on ``gnt-cluster redist-conf``
1811 - ``gnt-instance reinstall`` can now reinstall multiple instances
1812 - Updated many command line parameters
1813 - Introduced new OS API version 15
1814 - No longer support a default hypervisor
1815 - Treat virtual LVs as inexistent
1816 - Improved job locking logic to reduce lock contention
1817 - Match instance and node names case insensitively
1818 - Reimplemented bash completion script to be more complete
1825 *(Released Thu, 4 Feb 2010)*
1827 - Fix cleaner behaviour on nodes not in a cluster (Debian bug 568105)
1828 - Fix a string formatting bug
1829 - Improve safety of the code in some error paths
1830 - Improve data validation in the master of values returned from nodes
1836 *(Released Thu, 17 Dec 2009)*
1838 - Fix security issue due to missing validation of iallocator names; this
1839 allows local and remote execution of arbitrary executables
1840 - Fix failure of gnt-node list during instance removal
1841 - Ship the RAPI documentation in the archive
1847 *(Released Wed, 30 Sep 2009)*
1849 - Fixed many wrong messages
1850 - Fixed a few bugs related to the locking library
1851 - Fixed MAC checking at instance creation time
1852 - Fixed a DRBD parsing bug related to gaps in /proc/drbd
1853 - Fixed a few issues related to signal handling in both daemons and
1855 - Fixed the example startup script provided
1856 - Fixed insserv dependencies in the example startup script (patch from
1858 - Fixed handling of drained nodes in the iallocator framework
1859 - Fixed handling of KERNEL_PATH parameter for xen-hvm (Debian bug
1861 - Fixed error related to invalid job IDs in job polling
1862 - Fixed job/opcode persistence on unclean master shutdown
1863 - Fixed handling of partial job processing after unclean master
1865 - Fixed error reporting from LUs, previously all errors were converted
1866 into execution errors
1867 - Fixed error reporting from burnin
1868 - Decreased significantly the memory usage of the job queue
1869 - Optimised slightly multi-job submission
1870 - Optimised slightly opcode loading
1871 - Backported the multi-job submit framework from the development
1872 branch; multi-instance start and stop should be faster
1873 - Added script to clean archived jobs after 21 days; this will reduce
1874 the size of the queue directory
1875 - Added some extra checks in disk size tracking
1876 - Added an example ethers hook script
1877 - Added a cluster parameter that prevents Ganeti from modifying of
1879 - Added more node information to RAPI responses
1880 - Added a ``gnt-job watch`` command that allows following the ouput of a
1882 - Added a bind-address option to ganeti-rapi
1883 - Added more checks to the configuration verify
1884 - Enhanced the burnin script such that some operations can be retried
1886 - Converted instance reinstall to multi-instance model
1892 *(Released Fri, 7 Aug 2009)*
1894 - Added ``--ignore-size`` to the ``gnt-instance activate-disks`` command
1895 to allow using the pre-2.0.2 behaviour in activation, if any existing
1896 instances have mismatched disk sizes in the configuration
1897 - Added ``gnt-cluster repair-disk-sizes`` command to check and update
1898 any configuration mismatches for disk sizes
1899 - Added ``gnt-master cluste-failover --no-voting`` to allow master
1900 failover to work on two-node clusters
1901 - Fixed the ``--net`` option of ``gnt-backup import``, which was
1903 - Fixed detection of OS script errors in ``gnt-backup export``
1904 - Fixed exit code of ``gnt-backup export``
1910 *(Released Fri, 17 Jul 2009)*
1912 - Added experimental support for stripped logical volumes; this should
1913 enhance performance but comes with a higher complexity in the block
1914 device handling; stripping is only enabled when passing
1915 ``--with-lvm-stripecount=N`` to ``configure``, but codepaths are
1916 affected even in the non-stripped mode
1917 - Improved resiliency against transient failures at the end of DRBD
1918 resyncs, and in general of DRBD resync checks
1919 - Fixed a couple of issues with exports and snapshot errors
1920 - Fixed a couple of issues in instance listing
1921 - Added display of the disk size in ``gnt-instance info``
1922 - Fixed checking for valid OSes in instance creation
1923 - Fixed handling of the "vcpus" parameter in instance listing and in
1924 general of invalid parameters
1925 - Fixed http server library, and thus RAPI, to handle invalid
1926 username/password combinations correctly; this means that now they
1927 report unauthorized for queries too, not only for modifications,
1928 allowing earlier detect of configuration problems
1929 - Added a new "role" node list field, equivalent to the master/master
1930 candidate/drained/offline flags combinations
1931 - Fixed cluster modify and changes of candidate pool size
1932 - Fixed cluster verify error messages for wrong files on regular nodes
1933 - Fixed a couple of issues with node demotion from master candidate role
1934 - Fixed node readd issues
1935 - Added non-interactive mode for ``ganeti-masterd --no-voting`` startup
1936 - Added a new ``--no-voting`` option for masterfailover to fix failover
1937 on two-nodes clusters when the former master node is unreachable
1938 - Added instance reinstall over RAPI
1944 *(Released Tue, 16 Jun 2009)*
1946 - added ``-H``/``-B`` startup parameters to ``gnt-instance``, which will
1947 allow re-adding the start in single-user option (regression from 1.2)
1948 - the watcher writes the instance status to a file, to allow monitoring
1949 to report the instance status (from the master) based on cached
1950 results of the watcher's queries; while this can get stale if the
1951 watcher is being locked due to other work on the cluster, this is
1952 still an improvement
1953 - the watcher now also restarts the node daemon and the rapi daemon if
1955 - fixed the watcher to handle full and drained queue cases
1956 - hooks export more instance data in the environment, which helps if
1957 hook scripts need to take action based on the instance's properties
1958 (no longer need to query back into ganeti)
1959 - instance failovers when the instance is stopped do not check for free
1960 RAM, so that failing over a stopped instance is possible in low memory
1962 - rapi uses queries for tags instead of jobs (for less job traffic), and
1963 for cluster tags it won't talk to masterd at all but read them from
1965 - a couple of error handling fixes in RAPI
1966 - drbd handling: improved the error handling of inconsistent disks after
1967 resync to reduce the frequency of "there are some degraded disks for
1968 this instance" messages
1969 - fixed a bug in live migration when DRBD doesn't want to reconnect (the
1970 error handling path called a wrong function name)
1976 *(Released Wed, 27 May 2009)*
1978 - no changes from rc5
1984 *(Released Wed, 20 May 2009)*
1986 - fix a couple of bugs (validation, argument checks)
1987 - fix ``gnt-cluster getmaster`` on non-master nodes (regression)
1988 - some small improvements to RAPI and IAllocator
1989 - make watcher automatically start the master daemon if down
1995 *(Released Mon, 27 Apr 2009)*
1997 - change the OS list to not require locks; this helps with big clusters
1998 - fix ``gnt-cluster verify`` and ``gnt-cluster verify-disks`` when the
1999 volume group is broken
2000 - ``gnt-instance info``, without any arguments, doesn't run for all
2001 instances anymore; either pass ``--all`` or pass the desired
2002 instances; this helps against mistakes on big clusters where listing
2003 the information for all instances takes a long time
2004 - miscellaneous doc and man pages fixes
2010 *(Released Wed, 8 Apr 2009)*
2012 - Change the internal locking model of some ``gnt-node`` commands, in
2013 order to reduce contention (and blocking of master daemon) when
2014 batching many creation/reinstall jobs
2015 - Fixes to Xen soft reboot
2016 - No longer build documentation at build time, instead distribute it in
2017 the archive, in order to reduce the need for the whole docbook/rst
2024 *(Released Fri, 27 Mar 2009)*
2026 - Now the cfgupgrade scripts works and can upgrade 1.2.7 clusters to 2.0
2027 - Fix watcher startup sequence, improves the behaviour of busy clusters
2028 - Some other fixes in ``gnt-cluster verify``, ``gnt-instance
2029 replace-disks``, ``gnt-instance add``, ``gnt-cluster queue``, KVM VNC
2030 bind address and other places
2031 - Some documentation fixes and updates
2037 *(Released Mon, 2 Mar 2009)*
2039 - More documentation updates, now all docs should be more-or-less
2041 - A couple of small fixes (mixed hypervisor clusters, offline nodes,
2043 - Added a customizable HV_KERNEL_ARGS hypervisor parameter (for Xen PVM
2045 - Fix an issue related to $libdir/run/ganeti and cluster creation
2051 *(Released Thu, 19 Feb 2009)*
2053 - Xen PVM and KVM have switched the default value for the instance root
2054 disk to the first partition on the first drive, instead of the whole
2055 drive; this means that the OS installation scripts must be changed
2057 - Man pages have been updated
2058 - RAPI has been switched by default to HTTPS, and the exported functions
2059 should all work correctly
2060 - RAPI v1 has been removed
2061 - Many improvements to the KVM hypervisor
2062 - Block device errors are now better reported
2063 - Many other bugfixes and small improvements
2069 *(Released Mon, 26 Jan 2009)*
2071 - Version 2 is a general rewrite of the code and therefore the
2072 differences are too many to list, see the design document for 2.0 in
2073 the ``doc/`` subdirectory for more details
2074 - In this beta version there is not yet a migration path from 1.2 (there
2075 will be one in the final 2.0 release)
2076 - A few significant changes are:
2078 - all commands are executed by a daemon (``ganeti-masterd``) and the
2079 various ``gnt-*`` commands are just front-ends to it
2080 - all the commands are entered into, and executed from a job queue,
2081 see the ``gnt-job(8)`` manpage
2082 - the RAPI daemon supports read-write operations, secured by basic
2083 HTTP authentication on top of HTTPS
2084 - DRBD version 0.7 support has been removed, DRBD 8 is the only
2085 supported version (when migrating from Ganeti 1.2 to 2.0, you need
2086 to migrate to DRBD 8 first while still running Ganeti 1.2)
2087 - DRBD devices are using statically allocated minor numbers, which
2088 will be assigned to existing instances during the migration process
2089 - there is support for both Xen PVM and Xen HVM instances running on
2091 - KVM virtualization is supported too
2092 - file-based storage has been implemented, which means that it is
2093 possible to run the cluster without LVM and DRBD storage, for
2094 example using a shared filesystem exported from shared storage (and
2095 still have live migration)
2101 *(Released Tue, 13 Jan 2009)*
2103 - Change the default reboot type in ``gnt-instance reboot`` to "hard"
2104 - Reuse the old instance mac address by default on instance import, if
2105 the instance name is the same.
2106 - Handle situations in which the node info rpc returns incomplete
2108 - Add checks for tcp/udp ports collisions in ``gnt-cluster verify``
2109 - Improved version of batcher:
2111 - state file support
2112 - instance mac address support
2113 - support for HVM clusters/instances
2115 - Add an option to show the number of cpu sockets and nodes in
2117 - Support OSes that handle more than one version of the OS api (but do
2118 not change the current API in any other way)
2119 - Fix ``gnt-node migrate``
2120 - ``gnt-debug`` man page
2121 - Fixes various more typos and small issues
2122 - Increase disk resync maximum speed to 60MB/s (from 30MB/s)
2128 *(Released Wed, 24 Sep 2008)*
2130 - new ``--hvm-nic-type`` and ``--hvm-disk-type`` flags to control the
2131 type of disk exported to fully virtualized instances.
2132 - provide access to the serial console of HVM instances
2133 - instance auto_balance flag, set by default. If turned off it will
2134 avoid warnings on cluster verify if there is not enough memory to fail
2135 over an instance. in the future it will prevent automatically failing
2136 it over when we will support that.
2137 - batcher tool for instance creation, see ``tools/README.batcher``
2138 - ``gnt-instance reinstall --select-os`` to interactively select a new
2139 operating system when reinstalling an instance.
2140 - when changing the memory amount on instance modify a check has been
2141 added that the instance will be able to start. also warnings are
2142 emitted if the instance will not be able to fail over, if auto_balance
2144 - documentation fixes
2145 - sync fields between ``gnt-instance list/modify/add/import``
2146 - fix a race condition in drbd when the sync speed was set after giving
2147 the device a remote peer.
2153 *(Released Tue, 22 Jul 2008)*
2155 - note: the allowed size and number of tags per object were reduced
2156 - fix a bug in ``gnt-cluster verify`` with inconsistent volume groups
2157 - fixed twisted 8.x compatibility
2158 - fixed ``gnt-instance replace-disks`` with iallocator
2159 - add TCP keepalives on twisted connections to detect restarted nodes
2160 - disk increase support, see ``gnt-instance grow-disk``
2161 - implement bulk node/instance query for RAPI
2162 - add tags in node/instance listing (optional)
2163 - experimental migration (and live migration) support, read the man page
2164 for ``gnt-instance migrate``
2165 - the ``ganeti-watcher`` logs are now timestamped, and the watcher also
2166 has some small improvements in handling its state file
2172 *(Released Fri, 13 Jun 2008)*
2174 - Experimental readonly, REST-based remote API implementation;
2175 automatically started on master node, TCP port 5080, if enabled by
2176 ``--enable-rapi`` parameter to configure script.
2177 - Instance allocator support. Add and import instance accept a
2178 ``--iallocator`` parameter, and call that instance allocator to decide
2179 which node to use for the instance. The iallocator document describes
2180 what's expected from an allocator script.
2181 - ``gnt-cluster verify`` N+1 memory redundancy checks: Unless passed the
2182 ``--no-nplus1-mem`` option ``gnt-cluster verify`` now checks that if a
2183 node is lost there is still enough memory to fail over the instances
2185 - ``gnt-cluster verify`` hooks: it is now possible to add post-hooks to
2186 ``gnt-cluster verify``, to check for site-specific compliance. All the
2187 hooks will run, and their output, if any, will be displayed. Any
2188 failing hook will make the verification return an error value.
2189 - ``gnt-cluster verify`` now checks that its peers are reachable on the
2190 primary and secondary interfaces
2191 - ``gnt-node add`` now supports the ``--readd`` option, to readd a node
2192 that is still declared as part of the cluster and has failed.
2193 - ``gnt-* list`` commands now accept a new ``-o +field`` way of
2194 specifying output fields, that just adds the chosen fields to the
2196 - ``gnt-backup`` now has a new ``remove`` command to delete an existing
2197 export from the filesystem.
2198 - New per-instance parameters hvm_acpi, hvm_pae and hvm_cdrom_image_path
2199 have been added. Using them you can enable/disable acpi and pae
2200 support, and specify a path for a cd image to be exported to the
2201 instance. These parameters as the name suggest only work on HVM
2203 - When upgrading an HVM cluster to Ganeti 1.2.4, the values for ACPI and
2204 PAE support will be set to the previously hardcoded values, but the
2205 (previously hardcoded) path to the CDROM ISO image will be unset and
2206 if required, needs to be set manually with ``gnt-instance modify``
2208 - The address to which an instance's VNC console is bound is now
2209 selectable per-instance, rather than being cluster wide. Of course
2210 this only applies to instances controlled via VNC, so currently just
2211 applies to HVM clusters.
2217 *(Released Mon, 18 Feb 2008)*
2219 - more tweaks to the disk activation code (especially helpful for DRBD)
2220 - change the default ``gnt-instance list`` output format, now there is
2221 one combined status field (see the manpage for the exact values this
2223 - some more fixes for the mac export to hooks change
2224 - make Ganeti not break with DRBD 8.2.x (which changed the version
2225 format in ``/proc/drbd``) (issue 24)
2226 - add an upgrade tool from "remote_raid1" disk template to "drbd" disk
2227 template, allowing migration from DRBD0.7+MD to DRBD8
2233 *(Released Wed, 30 Jan 2008)*
2235 - fix ``gnt-instance modify`` breakage introduced in 1.2.1 with the HVM
2237 - add command aliases infrastructure and a few aliases
2238 - allow listing of VCPUs in the ``gnt-instance list`` and improve the
2239 man pages and the ``--help`` option of ``gnt-node
2240 list``/``gnt-instance list``
2241 - fix ``gnt-backup list`` with down nodes (issue 21)
2242 - change the tools location (move from $pkgdatadir to $pkglibdir/tools)
2243 - fix the dist archive and add a check for including svn/git files in
2245 - some developer-related changes: improve the burnin and the QA suite,
2246 add an upload script for testing during development
2252 *(Released Wed, 16 Jan 2008)*
2254 - experimental HVM support, read the install document, section
2255 "Initializing the cluster"
2256 - allow for the PVM hypervisor per-instance kernel and initrd paths
2257 - add a new command ``gnt-cluster verify-disks`` which uses a new
2258 algorithm to improve the reconnection of the DRBD pairs if the device
2259 on the secondary node has gone away
2260 - make logical volume code auto-activate LVs at disk activation time
2261 - slightly improve the speed of activating disks
2262 - allow specification of the MAC address at instance creation time, and
2263 changing it later via ``gnt-instance modify``
2264 - fix handling of external commands that generate lots of output on
2266 - update documentation with regard to minimum version of DRBD8 supported
2272 *(Released Tue, 4 Dec 2007)*
2274 - Log the ``xm create`` output to the node daemon log on failure (to
2275 help diagnosing the error)
2276 - In debug mode, log all external commands output if failed to the logs
2277 - Change parsing of lvm commands to ignore stderr
2283 *(Released Wed, 28 Nov 2007)*
2285 - Another round of updates to the DRBD 8 code to deal with more failures
2286 in the replace secondary node operation
2287 - Some more logging of failures in disk operations (lvm, drbd)
2288 - A few documentation updates
2295 *(Released Tue, 13 Nov 2007)*
2297 - Change configuration file format from Python's Pickle to JSON.
2298 Upgrading is possible using the cfgupgrade utility.
2299 - Add support for DRBD 8.0 (new disk template ``drbd``) which allows for
2300 faster replace disks and is more stable (DRBD 8 has many improvements
2301 compared to DRBD 0.7)
2302 - Added command line tags support (see man pages for ``gnt-instance``,
2303 ``gnt-node``, ``gnt-cluster``)
2304 - Added instance rename support
2305 - Added multi-instance startup/shutdown
2306 - Added cluster rename support
2307 - Added ``gnt-node evacuate`` to simplify some node operations
2308 - Added instance reboot operation that can speedup reboot as compared to
2310 - Soften the requirement that hostnames are in FQDN format
2311 - The ``ganeti-watcher`` now activates drbd pairs after secondary node
2313 - Removed dependency on debian's patched fping that uses the
2314 non-standard ``-S`` option
2315 - Now the OS definitions are searched for in multiple, configurable
2316 paths (easier for distros to package)
2317 - Some changes to the hooks infrastructure (especially the new
2318 post-configuration update hook)
2319 - Other small bugfixes
2321 .. vim: set textwidth=72 syntax=rst :