8 Ganeti 2.1 brings many improvements with it. Major changes:
10 - Added infrastructure to ease automated disk repairs
11 - Added new daemon to export configuration data in a cheaper way than
13 - Instance NICs can now be routed instead of being associated with a
15 - Improved job locking logic to reduce impact of jobs acquiring multiple
16 locks waiting for other long-running jobs
18 In-depth implementation details can be found in the Ganeti 2.1 design
24 - Added chroot hypervisor
25 - Added more options to xen-hvm hypervisor (``kernel_path`` and
27 - Added more options to xen-pvm hypervisor (``use_bootloader``,
28 ``bootloader_path`` and ``bootloader_args``)
29 - Added the ``use_localtime`` option for the xen-hvm and kvm
30 hypervisors, and the default value for this has changed to false (in
31 2.0 xen-hvm always enabled it)
32 - Added luxi call to submit multiple jobs in one go
33 - Added cluster initialization option to not modify ``/etc/hosts``
35 - Added network interface parameters
36 - Added dry run mode to some LUs
37 - Added RAPI resources:
39 - ``/2/instances/[instance_name]/info``
40 - ``/2/instances/[instance_name]/replace-disks``
41 - ``/2/nodes/[node_name]/evacuate``
42 - ``/2/nodes/[node_name]/migrate``
43 - ``/2/nodes/[node_name]/role``
44 - ``/2/nodes/[node_name]/storage``
45 - ``/2/nodes/[node_name]/storage/modify``
46 - ``/2/nodes/[node_name]/storage/repair``
48 - Added OpCodes to evacuate or migrate all instances on a node
49 - Added new command to list storage elements on nodes (``gnt-node
50 list-storage``) and modify them (``gnt-node modify-storage``)
51 - Added new ssconf files with master candidate IP address
52 (``ssconf_master_candidates_ips``), node primary IP address
53 (``ssconf_node_primary_ips``) and node secondary IP address
54 (``ssconf_node_secondary_ips``)
55 - Added ``ganeti-confd`` and a client library to query the Ganeti
57 - Added ability to run hooks after cluster initialization and before
59 - Added automatic mode for disk replace (``gnt-instance replace-disks
61 - Added ``gnt-instance recreate-disks`` to re-create (empty) disks
62 after catastrophic data-loss
63 - Added ``gnt-node repair-storage`` command to repair damaged LVM volume
65 - Added ``gnt-instance move`` command to move instances
66 - Added ``gnt-cluster watcher`` command to control watcher
67 - Added ``gnt-node powercycle`` command to powercycle nodes
68 - Added new job status field ``lock_status``
69 - Added parseable error codes to cluster verification (``gnt-cluster
70 verify --error-codes``) and made output less verbose (use
71 ``--verbose`` to restore previous behaviour)
72 - Added UUIDs to the main config entities (cluster, nodes, instances)
73 - Added support for OS variants
74 - Added support for hashed passwords in the Ganeti remote API users file
76 - Added option to specify maximum timeout on instance shutdown
77 - Added ``--no-ssh-init`` option to ``gnt-cluster init``
78 - Added new helper script to start and stop Ganeti daemons
79 (``daemon-util``), with the intent to reduce the work necessary to
80 adjust Ganeti for non-Debian distributions and to start/stop daemons
82 - Added more unittests
83 - Fixed critical bug in ganeti-masterd startup
84 - Removed the configure-time ``kvm-migration-port`` parameter, this is
85 now customisable at the cluster level for both the KVM and Xen
86 hypervisors using the new ``migration_port`` parameter
87 - Pass ``INSTANCE_REINSTALL`` variable to OS installation script when
88 reinstalling an instance
89 - Migrated to Sphinx (http://sphinx.pocoo.org/) for documentation
90 - Many documentation updates
91 - Distribute hypervisor files on ``gnt-cluster redist-conf``
92 - ``gnt-instance reinstall`` can now reinstall multiple instances
93 - Updated many command line parameters
94 - Introduced new OS API version 15
95 - No longer support a default hypervisor
96 - Treat virtual LVs as inexistent
97 - Improved job locking logic to reduce lock contention
98 - Match instance and node names case insensitively
99 - Reimplemented bash completion script to be more complete
106 - Fixed many wrong messages
107 - Fixed a few bugs related to the locking library
108 - Fixed MAC checking at instance creation time
109 - Fixed a DRBD parsing bug related to gaps in /proc/drbd
110 - Fixed a few issues related to signal handling in both daemons and
112 - Fixed the example startup script provided
113 - Fixed insserv dependencies in the example startup script (patch from
115 - Fixed handling of drained nodes in the iallocator framework
116 - Fixed handling of KERNEL_PATH parameter for xen-hvm (Debian bug
118 - Fixed error related to invalid job IDs in job polling
119 - Fixed job/opcode persistence on unclean master shutdown
120 - Fixed handling of partial job processing after unclean master
122 - Fixed error reporting from LUs, previously all errors were converted
123 into execution errors
124 - Fixed error reporting from burnin
125 - Decreased significantly the memory usage of the job queue
126 - Optimised slightly multi-job submission
127 - Optimised slightly opcode loading
128 - Backported the multi-job submit framework from the development
129 branch; multi-instance start and stop should be faster
130 - Added script to clean archived jobs after 21 days; this will reduce
131 the size of the queue directory
132 - Added some extra checks in disk size tracking
133 - Added an example ethers hook script
134 - Added a cluster parameter that prevents Ganeti from modifying of
136 - Added more node information to RAPI responses
137 - Added a ``gnt-job watch`` command that allows following the ouput of a
139 - Added a bind-address option to ganeti-rapi
140 - Added more checks to the configuration verify
141 - Enhanced the burnin script such that some operations can be retried
143 - Converted instance reinstall to multi-instance model
149 - Added ``--ignore-size`` to the ``gnt-instance activate-disks`` command
150 to allow using the pre-2.0.2 behaviour in activation, if any existing
151 instances have mismatched disk sizes in the configuration
152 - Added ``gnt-cluster repair-disk-sizes`` command to check and update
153 any configuration mismatches for disk sizes
154 - Added ``gnt-master cluste-failover --no-voting`` to allow master
155 failover to work on two-node clusters
156 - Fixed the ``--net`` option of ``gnt-backup import``, which was
158 - Fixed detection of OS script errors in ``gnt-backup export``
159 - Fixed exit code of ``gnt-backup export``
165 - Added experimental support for stripped logical volumes; this should
166 enhance performance but comes with a higher complexity in the block
167 device handling; stripping is only enabled when passing
168 ``--with-lvm-stripecount=N`` to ``configure``, but codepaths are
169 affected even in the non-stripped mode
170 - Improved resiliency against transient failures at the end of DRBD
171 resyncs, and in general of DRBD resync checks
172 - Fixed a couple of issues with exports and snapshot errors
173 - Fixed a couple of issues in instance listing
174 - Added display of the disk size in ``gnt-instance info``
175 - Fixed checking for valid OSes in instance creation
176 - Fixed handling of the "vcpus" parameter in instance listing and in
177 general of invalid parameters
178 - Fixed http server library, and thus RAPI, to handle invalid
179 username/password combinations correctly; this means that now they
180 report unauthorized for queries too, not only for modifications,
181 allowing earlier detect of configuration problems
182 - Added a new "role" node list field, equivalent to the master/master
183 candidate/drained/offline flags combinations
184 - Fixed cluster modify and changes of candidate pool size
185 - Fixed cluster verify error messages for wrong files on regular nodes
186 - Fixed a couple of issues with node demotion from master candidate role
187 - Fixed node readd issues
188 - Added non-interactive mode for ``ganeti-masterd --no-voting`` startup
189 - Added a new ``--no-voting`` option for masterfailover to fix failover
190 on two-nodes clusters when the former master node is unreachable
191 - Added instance reinstall over RAPI
197 - added ``-H``/``-B`` startup parameters to ``gnt-instance``, which will
198 allow re-adding the start in single-user option (regression from 1.2)
199 - the watcher writes the instance status to a file, to allow monitoring
200 to report the instance status (from the master) based on cached
201 results of the watcher's queries; while this can get stale if the
202 watcher is being locked due to other work on the cluster, this is
204 - the watcher now also restarts the node daemon and the rapi daemon if
206 - fixed the watcher to handle full and drained queue cases
207 - hooks export more instance data in the environment, which helps if
208 hook scripts need to take action based on the instance's properties
209 (no longer need to query back into ganeti)
210 - instance failovers when the instance is stopped do not check for free
211 RAM, so that failing over a stopped instance is possible in low memory
213 - rapi uses queries for tags instead of jobs (for less job traffic), and
214 for cluster tags it won't talk to masterd at all but read them from
216 - a couple of error handling fixes in RAPI
217 - drbd handling: improved the error handling of inconsistent disks after
218 resync to reduce the frequency of "there are some degraded disks for
219 this instance" messages
220 - fixed a bug in live migration when DRBD doesn't want to reconnect (the
221 error handling path called a wrong function name)
227 - no changes from rc5
230 Version 2.0 release candidate 5
231 -------------------------------
233 - fix a couple of bugs (validation, argument checks)
234 - fix ``gnt-cluster getmaster`` on non-master nodes (regression)
235 - some small improvements to RAPI and IAllocator
236 - make watcher automatically start the master daemon if down
239 Version 2.0 release candidate 4
240 -------------------------------
242 - change the OS list to not require locks; this helps with big clusters
243 - fix ``gnt-cluster verify`` and ``gnt-cluster verify-disks`` when the
244 volume group is broken
245 - ``gnt-instance info``, without any arguments, doesn't run for all
246 instances anymore; either pass ``--all`` or pass the desired
247 instances; this helps against mistakes on big clusters where listing
248 the information for all instances takes a long time
249 - miscellaneous doc and man pages fixes
252 Version 2.0 release candidate 3
253 -------------------------------
255 - Change the internal locking model of some ``gnt-node`` commands, in
256 order to reduce contention (and blocking of master daemon) when
257 batching many creation/reinstall jobs
258 - Fixes to Xen soft reboot
259 - No longer build documentation at build time, instead distribute it in
260 the archive, in order to reduce the need for the whole docbook/rst
264 Version 2.0 release candidate 2
265 -------------------------------
267 - Now the cfgupgrade scripts works and can upgrade 1.2.7 clusters to 2.0
268 - Fix watcher startup sequence, improves the behaviour of busy clusters
269 - Some other fixes in ``gnt-cluster verify``, ``gnt-instance
270 replace-disks``, ``gnt-instance add``, ``gnt-cluster queue``, KVM VNC
271 bind address and other places
272 - Some documentation fixes and updates
275 Version 2.0 release candidate 1
276 -------------------------------
278 - More documentation updates, now all docs should be more-or-less
280 - A couple of small fixes (mixed hypervisor clusters, offline nodes,
282 - Added a customizable HV_KERNEL_ARGS hypervisor parameter (for Xen PVM
284 - Fix an issue related to $libdir/run/ganeti and cluster creation
290 - Xen PVM and KVM have switched the default value for the instance root
291 disk to the first partition on the first drive, instead of the whole
292 drive; this means that the OS installation scripts must be changed
294 - Man pages have been updated
295 - RAPI has been switched by default to HTTPS, and the exported functions
296 should all work correctly
297 - RAPI v1 has been removed
298 - Many improvements to the KVM hypervisor
299 - Block device errors are now better reported
300 - Many other bugfixes and small improvements
306 - Version 2 is a general rewrite of the code and therefore the
307 differences are too many to list, see the design document for 2.0 in
308 the ``doc/`` subdirectory for more details
309 - In this beta version there is not yet a migration path from 1.2 (there
310 will be one in the final 2.0 release)
311 - A few significant changes are:
313 - all commands are executed by a daemon (``ganeti-masterd``) and the
314 various ``gnt-*`` commands are just front-ends to it
315 - all the commands are entered into, and executed from a job queue,
316 see the ``gnt-job(8)`` manpage
317 - the RAPI daemon supports read-write operations, secured by basic
318 HTTP authentication on top of HTTPS
319 - DRBD version 0.7 support has been removed, DRBD 8 is the only
320 supported version (when migrating from Ganeti 1.2 to 2.0, you need
321 to migrate to DRBD 8 first while still running Ganeti 1.2)
322 - DRBD devices are using statically allocated minor numbers, which
323 will be assigned to existing instances during the migration process
324 - there is support for both Xen PVM and Xen HVM instances running on
326 - KVM virtualization is supported too
327 - file-based storage has been implemented, which means that it is
328 possible to run the cluster without LVM and DRBD storage, for
329 example using a shared filesystem exported from shared storage (and
330 still have live migration)
336 - Change the default reboot type in ``gnt-instance reboot`` to "hard"
337 - Reuse the old instance mac address by default on instance import, if
338 the instance name is the same.
339 - Handle situations in which the node info rpc returns incomplete
341 - Add checks for tcp/udp ports collisions in ``gnt-cluster verify``
342 - Improved version of batcher:
345 - instance mac address support
346 - support for HVM clusters/instances
348 - Add an option to show the number of cpu sockets and nodes in
350 - Support OSes that handle more than one version of the OS api (but do
351 not change the current API in any other way)
352 - Fix ``gnt-node migrate``
353 - ``gnt-debug`` man page
354 - Fixes various more typos and small issues
355 - Increase disk resync maximum speed to 60MB/s (from 30MB/s)
361 - new ``--hvm-nic-type`` and ``--hvm-disk-type`` flags to control the
362 type of disk exported to fully virtualized instances.
363 - provide access to the serial console of HVM instances
364 - instance auto_balance flag, set by default. If turned off it will
365 avoid warnings on cluster verify if there is not enough memory to fail
366 over an instance. in the future it will prevent automatically failing
367 it over when we will support that.
368 - batcher tool for instance creation, see ``tools/README.batcher``
369 - ``gnt-instance reinstall --select-os`` to interactively select a new
370 operating system when reinstalling an instance.
371 - when changing the memory amount on instance modify a check has been
372 added that the instance will be able to start. also warnings are
373 emitted if the instance will not be able to fail over, if auto_balance
375 - documentation fixes
376 - sync fields between ``gnt-instance list/modify/add/import``
377 - fix a race condition in drbd when the sync speed was set after giving
378 the device a remote peer.
384 - note: the allowed size and number of tags per object were reduced
385 - fix a bug in ``gnt-cluster verify`` with inconsistent volume groups
386 - fixed twisted 8.x compatibility
387 - fixed ``gnt-instance replace-disks`` with iallocator
388 - add TCP keepalives on twisted connections to detect restarted nodes
389 - disk increase support, see ``gnt-instance grow-disk``
390 - implement bulk node/instance query for RAPI
391 - add tags in node/instance listing (optional)
392 - experimental migration (and live migration) support, read the man page
393 for ``gnt-instance migrate``
394 - the ``ganeti-watcher`` logs are now timestamped, and the watcher also
395 has some small improvements in handling its state file
401 - Experimental readonly, REST-based remote API implementation;
402 automatically started on master node, TCP port 5080, if enabled by
403 ``--enable-rapi`` parameter to configure script.
404 - Instance allocator support. Add and import instance accept a
405 ``--iallocator`` parameter, and call that instance allocator to decide
406 which node to use for the instance. The iallocator document describes
407 what's expected from an allocator script.
408 - ``gnt-cluster verify`` N+1 memory redundancy checks: Unless passed the
409 ``--no-nplus1-mem`` option ``gnt-cluster verify`` now checks that if a
410 node is lost there is still enough memory to fail over the instances
412 - ``gnt-cluster verify`` hooks: it is now possible to add post-hooks to
413 ``gnt-cluster verify``, to check for site-specific compliance. All the
414 hooks will run, and their output, if any, will be displayed. Any
415 failing hook will make the verification return an error value.
416 - ``gnt-cluster verify`` now checks that its peers are reachable on the
417 primary and secondary interfaces
418 - ``gnt-node add`` now supports the ``--readd`` option, to readd a node
419 that is still declared as part of the cluster and has failed.
420 - ``gnt-* list`` commands now accept a new ``-o +field`` way of
421 specifying output fields, that just adds the chosen fields to the
423 - ``gnt-backup`` now has a new ``remove`` command to delete an existing
424 export from the filesystem.
425 - New per-instance parameters hvm_acpi, hvm_pae and hvm_cdrom_image_path
426 have been added. Using them you can enable/disable acpi and pae
427 support, and specify a path for a cd image to be exported to the
428 instance. These parameters as the name suggest only work on HVM
430 - When upgrading an HVM cluster to Ganeti 1.2.4, the values for ACPI and
431 PAE support will be set to the previously hardcoded values, but the
432 (previously hardcoded) path to the CDROM ISO image will be unset and
433 if required, needs to be set manually with ``gnt-instance modify``
435 - The address to which an instance's VNC console is bound is now
436 selectable per-instance, rather than being cluster wide. Of course
437 this only applies to instances controlled via VNC, so currently just
438 applies to HVM clusters.
444 - more tweaks to the disk activation code (especially helpful for DRBD)
445 - change the default ``gnt-instance list`` output format, now there is
446 one combined status field (see the manpage for the exact values this
448 - some more fixes for the mac export to hooks change
449 - make Ganeti not break with DRBD 8.2.x (which changed the version
450 format in ``/proc/drbd``) (issue 24)
451 - add an upgrade tool from "remote_raid1" disk template to "drbd" disk
452 template, allowing migration from DRBD0.7+MD to DRBD8
458 - fix ``gnt-instance modify`` breakage introduced in 1.2.1 with the HVM
460 - add command aliases infrastructure and a few aliases
461 - allow listing of VCPUs in the ``gnt-instance list`` and improve the
462 man pages and the ``--help`` option of ``gnt-node
463 list``/``gnt-instance list``
464 - fix ``gnt-backup list`` with down nodes (issue 21)
465 - change the tools location (move from $pkgdatadir to $pkglibdir/tools)
466 - fix the dist archive and add a check for including svn/git files in
468 - some developer-related changes: improve the burnin and the QA suite,
469 add an upload script for testing during development
475 - experimental HVM support, read the install document, section
476 "Initializing the cluster"
477 - allow for the PVM hypervisor per-instance kernel and initrd paths
478 - add a new command ``gnt-cluster verify-disks`` which uses a new
479 algorithm to improve the reconnection of the DRBD pairs if the device
480 on the secondary node has gone away
481 - make logical volume code auto-activate LVs at disk activation time
482 - slightly improve the speed of activating disks
483 - allow specification of the MAC address at instance creation time, and
484 changing it later via ``gnt-instance modify``
485 - fix handling of external commands that generate lots of output on
487 - update documentation with regard to minimum version of DRBD8 supported
493 - Log the ``xm create`` output to the node daemon log on failure (to
494 help diagnosing the error)
495 - In debug mode, log all external commands output if failed to the logs
496 - Change parsing of lvm commands to ignore stderr
502 - Another round of updates to the DRBD 8 code to deal with more failures
503 in the replace secondary node operation
504 - Some more logging of failures in disk operations (lvm, drbd)
505 - A few documentation updates
512 - Change configuration file format from Python's Pickle to JSON.
513 Upgrading is possible using the cfgupgrade utility.
514 - Add support for DRBD 8.0 (new disk template ``drbd``) which allows for
515 faster replace disks and is more stable (DRBD 8 has many improvements
516 compared to DRBD 0.7)
517 - Added command line tags support (see man pages for ``gnt-instance``,
518 ``gnt-node``, ``gnt-cluster``)
519 - Added instance rename support
520 - Added multi-instance startup/shutdown
521 - Added cluster rename support
522 - Added ``gnt-node evacuate`` to simplify some node operations
523 - Added instance reboot operation that can speedup reboot as compared to
525 - Soften the requirement that hostnames are in FQDN format
526 - The ``ganeti-watcher`` now activates drbd pairs after secondary node
528 - Removed dependency on debian's patched fping that uses the
529 non-standard ``-S`` option
530 - Now the OS definitions are searched for in multiple, configurable
531 paths (easier for distros to package)
532 - Some changes to the hooks infrastructure (especially the new
533 post-configuration update hook)
534 - Other small bugfixes
536 .. vim: set textwidth=72 :