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 Detailed 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 luxi call to submit multiple jobs in one go
30 - Added cluster initialization time option to not modify ``/etc/hosts``
32 - Added network interface parameters
33 - Added dry run mode to some LUs
34 - Added RAPI resources:
36 - ``/2/instances/[instance_name]/info``
37 - ``/2/instances/[instance_name]/replace-disks``
38 - ``/2/nodes/[node_name]/evacuate``
39 - ``/2/nodes/[node_name]/migrate``
40 - ``/2/nodes/[node_name]/role``
41 - ``/2/nodes/[node_name]/storage``
42 - ``/2/nodes/[node_name]/storage/modify``
43 - ``/2/nodes/[node_name]/storage/repair``
45 - Added OpCodes to evacuate or migrate all instances on a node
46 - Added new command to list storage elements on nodes (``gnt-node
47 list-storage``) and modify them (``gnt-node modify-storage``)
48 - Added new ssconf files with master candidate IP address
49 (``ssconf_master_candidates_ips``), node primary IP address
50 (``ssconf_node_primary_ips``) and node secondary IP address
51 (``ssconf_node_secondary_ips``)
52 - Added ``ganeti-confd`` and a client library to query the Ganeti
54 - Added ability to run hooks after cluster initialization and before
56 - Added automatic mode for disk replace (``gnt-instance replace-disks
58 - Added ``gnt-instance recreate-disks`` to re-create (empty) disks
59 after catastrophic data-loss
60 - Added ``gnt-node repair-storage`` command to repair damaged LVM volume
62 - Added ``gnt-instance move`` command to move instances
63 - Added ``gnt-cluster watcher`` command to control watcher
64 - Added ``gnt-node powercycle`` command to powercycle nodes
65 - Added new job status field ``lock_status``
66 - Added parseable error codes to cluster verification (``gnt-cluster
67 verify --error-codes``) and made output less verbose (use
68 ``--verbose`` to restore previous behaviour)
69 - Added UUIDs to the main config entities (cluster, nodes, instances)
70 - Added support for OS variants
71 - Added support for hashed passwords in the Ganeti remote API users file
73 - Added option to specify maximum timeout on instance shutdown
74 - Added ``--no-ssh-init`` option to ``gnt-cluster init``
75 - Added new helper script to start and stop Ganeti daemons
76 (``daemon-util``), with the intent to reduce the work necessary to
77 adjust Ganeti for non-Debian distributions and to start/stop daemons
79 - Added more unittests
80 - Fixed critical bug in ganeti-masterd startup
81 - Pass ``INSTANCE_REINSTALL`` variable to OS installation script when
82 reinstalling an instance
83 - Migrated to Sphinx (http://sphinx.pocoo.org/) for documentation
84 - Many documentation updates
85 - Distribute hypervisor files on ``gnt-cluster redist-conf``
86 - ``gnt-instance reinstall`` can now reinstall multiple instances
87 - Updated many command line parameters
88 - Introduced new OS API version 15
89 - No longer support a default hypervisor
90 - Treat virtual LVs as inexistent
91 - Improved job locking logic to reduce lock contention
92 - Match instance and node names case insensitively
93 - Reimplemented bash completion script to be more complete
100 - Fixed many wrong messages
101 - Fixed a few bugs related to the locking library
102 - Fixed MAC checking at instance creation time
103 - Fixed a DRBD parsing bug related to gaps in /proc/drbd
104 - Fixed a few issues related to signal handling in both daemons and
106 - Fixed the example startup script provided
107 - Fixed insserv dependencies in the example startup script (patch from
109 - Fixed handling of drained nodes in the iallocator framework
110 - Fixed handling of KERNEL_PATH parameter for xen-hvm (Debian bug
112 - Fixed error related to invalid job IDs in job polling
113 - Fixed job/opcode persistence on unclean master shutdown
114 - Fixed handling of partial job processing after unclean master
116 - Fixed error reporting from LUs, previously all errors were converted
117 into execution errors
118 - Fixed error reporting from burnin
119 - Decreased significantly the memory usage of the job queue
120 - Optimised slightly multi-job submission
121 - Optimised slightly opcode loading
122 - Backported the multi-job submit framework from the development
123 branch; multi-instance start and stop should be faster
124 - Added script to clean archived jobs after 21 days; this will reduce
125 the size of the queue directory
126 - Added some extra checks in disk size tracking
127 - Added an example ethers hook script
128 - Added a cluster parameter that prevents Ganeti from modifying of
130 - Added more node information to RAPI responses
131 - Added a ``gnt-job watch`` command that allows following the ouput of a
133 - Added a bind-address option to ganeti-rapi
134 - Added more checks to the configuration verify
135 - Enhanced the burnin script such that some operations can be retried
137 - Converted instance reinstall to multi-instance model
143 - Added ``--ignore-size`` to the ``gnt-instance activate-disks`` command
144 to allow using the pre-2.0.2 behaviour in activation, if any existing
145 instances have mismatched disk sizes in the configuration
146 - Added ``gnt-cluster repair-disk-sizes`` command to check and update
147 any configuration mismatches for disk sizes
148 - Added ``gnt-master cluste-failover --no-voting`` to allow master
149 failover to work on two-node clusters
150 - Fixed the ``--net`` option of ``gnt-backup import``, which was
152 - Fixed detection of OS script errors in ``gnt-backup export``
153 - Fixed exit code of ``gnt-backup export``
159 - Added experimental support for stripped logical volumes; this should
160 enhance performance but comes with a higher complexity in the block
161 device handling; stripping is only enabled when passing
162 ``--with-lvm-stripecount=N`` to ``configure``, but codepaths are
163 affected even in the non-stripped mode
164 - Improved resiliency against transient failures at the end of DRBD
165 resyncs, and in general of DRBD resync checks
166 - Fixed a couple of issues with exports and snapshot errors
167 - Fixed a couple of issues in instance listing
168 - Added display of the disk size in ``gnt-instance info``
169 - Fixed checking for valid OSes in instance creation
170 - Fixed handling of the "vcpus" parameter in instance listing and in
171 general of invalid parameters
172 - Fixed http server library, and thus RAPI, to handle invalid
173 username/password combinations correctly; this means that now they
174 report unauthorized for queries too, not only for modifications,
175 allowing earlier detect of configuration problems
176 - Added a new "role" node list field, equivalent to the master/master
177 candidate/drained/offline flags combinations
178 - Fixed cluster modify and changes of candidate pool size
179 - Fixed cluster verify error messages for wrong files on regular nodes
180 - Fixed a couple of issues with node demotion from master candidate role
181 - Fixed node readd issues
182 - Added non-interactive mode for ``ganeti-masterd --no-voting`` startup
183 - Added a new ``--no-voting`` option for masterfailover to fix failover
184 on two-nodes clusters when the former master node is unreachable
185 - Added instance reinstall over RAPI
191 - added ``-H``/``-B`` startup parameters to ``gnt-instance``, which will
192 allow re-adding the start in single-user option (regression from 1.2)
193 - the watcher writes the instance status to a file, to allow monitoring
194 to report the instance status (from the master) based on cached
195 results of the watcher's queries; while this can get stale if the
196 watcher is being locked due to other work on the cluster, this is
198 - the watcher now also restarts the node daemon and the rapi daemon if
200 - fixed the watcher to handle full and drained queue cases
201 - hooks export more instance data in the environment, which helps if
202 hook scripts need to take action based on the instance's properties
203 (no longer need to query back into ganeti)
204 - instance failovers when the instance is stopped do not check for free
205 RAM, so that failing over a stopped instance is possible in low memory
207 - rapi uses queries for tags instead of jobs (for less job traffic), and
208 for cluster tags it won't talk to masterd at all but read them from
210 - a couple of error handling fixes in RAPI
211 - drbd handling: improved the error handling of inconsistent disks after
212 resync to reduce the frequency of "there are some degraded disks for
213 this instance" messages
214 - fixed a bug in live migration when DRBD doesn't want to reconnect (the
215 error handling path called a wrong function name)
221 - no changes from rc5
224 Version 2.0 release candidate 5
225 -------------------------------
227 - fix a couple of bugs (validation, argument checks)
228 - fix ``gnt-cluster getmaster`` on non-master nodes (regression)
229 - some small improvements to RAPI and IAllocator
230 - make watcher automatically start the master daemon if down
233 Version 2.0 release candidate 4
234 -------------------------------
236 - change the OS list to not require locks; this helps with big clusters
237 - fix ``gnt-cluster verify`` and ``gnt-cluster verify-disks`` when the
238 volume group is broken
239 - ``gnt-instance info``, without any arguments, doesn't run for all
240 instances anymore; either pass ``--all`` or pass the desired
241 instances; this helps against mistakes on big clusters where listing
242 the information for all instances takes a long time
243 - miscellaneous doc and man pages fixes
246 Version 2.0 release candidate 3
247 -------------------------------
249 - Change the internal locking model of some ``gnt-node`` commands, in
250 order to reduce contention (and blocking of master daemon) when
251 batching many creation/reinstall jobs
252 - Fixes to Xen soft reboot
253 - No longer build documentation at build time, instead distribute it in
254 the archive, in order to reduce the need for the whole docbook/rst
258 Version 2.0 release candidate 2
259 -------------------------------
261 - Now the cfgupgrade scripts works and can upgrade 1.2.7 clusters to 2.0
262 - Fix watcher startup sequence, improves the behaviour of busy clusters
263 - Some other fixes in ``gnt-cluster verify``, ``gnt-instance
264 replace-disks``, ``gnt-instance add``, ``gnt-cluster queue``, KVM VNC
265 bind address and other places
266 - Some documentation fixes and updates
269 Version 2.0 release candidate 1
270 -------------------------------
272 - More documentation updates, now all docs should be more-or-less
274 - A couple of small fixes (mixed hypervisor clusters, offline nodes,
276 - Added a customizable HV_KERNEL_ARGS hypervisor parameter (for Xen PVM
278 - Fix an issue related to $libdir/run/ganeti and cluster creation
284 - Xen PVM and KVM have switched the default value for the instance root
285 disk to the first partition on the first drive, instead of the whole
286 drive; this means that the OS installation scripts must be changed
288 - Man pages have been updated
289 - RAPI has been switched by default to HTTPS, and the exported functions
290 should all work correctly
291 - RAPI v1 has been removed
292 - Many improvements to the KVM hypervisor
293 - Block device errors are now better reported
294 - Many other bugfixes and small improvements
300 - Version 2 is a general rewrite of the code and therefore the
301 differences are too many to list, see the design document for 2.0 in
302 the ``doc/`` subdirectory for more details
303 - In this beta version there is not yet a migration path from 1.2 (there
304 will be one in the final 2.0 release)
305 - A few significant changes are:
307 - all commands are executed by a daemon (``ganeti-masterd``) and the
308 various ``gnt-*`` commands are just front-ends to it
309 - all the commands are entered into, and executed from a job queue,
310 see the ``gnt-job(8)`` manpage
311 - the RAPI daemon supports read-write operations, secured by basic
312 HTTP authentication on top of HTTPS
313 - DRBD version 0.7 support has been removed, DRBD 8 is the only
314 supported version (when migrating from Ganeti 1.2 to 2.0, you need
315 to migrate to DRBD 8 first while still running Ganeti 1.2)
316 - DRBD devices are using statically allocated minor numbers, which
317 will be assigned to existing instances during the migration process
318 - there is support for both Xen PVM and Xen HVM instances running on
320 - KVM virtualization is supported too
321 - file-based storage has been implemented, which means that it is
322 possible to run the cluster without LVM and DRBD storage, for
323 example using a shared filesystem exported from shared storage (and
324 still have live migration)
330 - Change the default reboot type in ``gnt-instance reboot`` to "hard"
331 - Reuse the old instance mac address by default on instance import, if
332 the instance name is the same.
333 - Handle situations in which the node info rpc returns incomplete
335 - Add checks for tcp/udp ports collisions in ``gnt-cluster verify``
336 - Improved version of batcher:
339 - instance mac address support
340 - support for HVM clusters/instances
342 - Add an option to show the number of cpu sockets and nodes in
344 - Support OSes that handle more than one version of the OS api (but do
345 not change the current API in any other way)
346 - Fix ``gnt-node migrate``
347 - ``gnt-debug`` man page
348 - Fixes various more typos and small issues
349 - Increase disk resync maximum speed to 60MB/s (from 30MB/s)
355 - new ``--hvm-nic-type`` and ``--hvm-disk-type`` flags to control the
356 type of disk exported to fully virtualized instances.
357 - provide access to the serial console of HVM instances
358 - instance auto_balance flag, set by default. If turned off it will
359 avoid warnings on cluster verify if there is not enough memory to fail
360 over an instance. in the future it will prevent automatically failing
361 it over when we will support that.
362 - batcher tool for instance creation, see ``tools/README.batcher``
363 - ``gnt-instance reinstall --select-os`` to interactively select a new
364 operating system when reinstalling an instance.
365 - when changing the memory amount on instance modify a check has been
366 added that the instance will be able to start. also warnings are
367 emitted if the instance will not be able to fail over, if auto_balance
369 - documentation fixes
370 - sync fields between ``gnt-instance list/modify/add/import``
371 - fix a race condition in drbd when the sync speed was set after giving
372 the device a remote peer.
378 - note: the allowed size and number of tags per object were reduced
379 - fix a bug in ``gnt-cluster verify`` with inconsistent volume groups
380 - fixed twisted 8.x compatibility
381 - fixed ``gnt-instance replace-disks`` with iallocator
382 - add TCP keepalives on twisted connections to detect restarted nodes
383 - disk increase support, see ``gnt-instance grow-disk``
384 - implement bulk node/instance query for RAPI
385 - add tags in node/instance listing (optional)
386 - experimental migration (and live migration) support, read the man page
387 for ``gnt-instance migrate``
388 - the ``ganeti-watcher`` logs are now timestamped, and the watcher also
389 has some small improvements in handling its state file
395 - Experimental readonly, REST-based remote API implementation;
396 automatically started on master node, TCP port 5080, if enabled by
397 ``--enable-rapi`` parameter to configure script.
398 - Instance allocator support. Add and import instance accept a
399 ``--iallocator`` parameter, and call that instance allocator to decide
400 which node to use for the instance. The iallocator document describes
401 what's expected from an allocator script.
402 - ``gnt-cluster verify`` N+1 memory redundancy checks: Unless passed the
403 ``--no-nplus1-mem`` option ``gnt-cluster verify`` now checks that if a
404 node is lost there is still enough memory to fail over the instances
406 - ``gnt-cluster verify`` hooks: it is now possible to add post-hooks to
407 ``gnt-cluster verify``, to check for site-specific compliance. All the
408 hooks will run, and their output, if any, will be displayed. Any
409 failing hook will make the verification return an error value.
410 - ``gnt-cluster verify`` now checks that its peers are reachable on the
411 primary and secondary interfaces
412 - ``gnt-node add`` now supports the ``--readd`` option, to readd a node
413 that is still declared as part of the cluster and has failed.
414 - ``gnt-* list`` commands now accept a new ``-o +field`` way of
415 specifying output fields, that just adds the chosen fields to the
417 - ``gnt-backup`` now has a new ``remove`` command to delete an existing
418 export from the filesystem.
419 - New per-instance parameters hvm_acpi, hvm_pae and hvm_cdrom_image_path
420 have been added. Using them you can enable/disable acpi and pae
421 support, and specify a path for a cd image to be exported to the
422 instance. These parameters as the name suggest only work on HVM
424 - When upgrading an HVM cluster to Ganeti 1.2.4, the values for ACPI and
425 PAE support will be set to the previously hardcoded values, but the
426 (previously hardcoded) path to the CDROM ISO image will be unset and
427 if required, needs to be set manually with ``gnt-instance modify``
429 - The address to which an instance's VNC console is bound is now
430 selectable per-instance, rather than being cluster wide. Of course
431 this only applies to instances controlled via VNC, so currently just
432 applies to HVM clusters.
438 - more tweaks to the disk activation code (especially helpful for DRBD)
439 - change the default ``gnt-instance list`` output format, now there is
440 one combined status field (see the manpage for the exact values this
442 - some more fixes for the mac export to hooks change
443 - make Ganeti not break with DRBD 8.2.x (which changed the version
444 format in ``/proc/drbd``) (issue 24)
445 - add an upgrade tool from "remote_raid1" disk template to "drbd" disk
446 template, allowing migration from DRBD0.7+MD to DRBD8
452 - fix ``gnt-instance modify`` breakage introduced in 1.2.1 with the HVM
454 - add command aliases infrastructure and a few aliases
455 - allow listing of VCPUs in the ``gnt-instance list`` and improve the
456 man pages and the ``--help`` option of ``gnt-node
457 list``/``gnt-instance list``
458 - fix ``gnt-backup list`` with down nodes (issue 21)
459 - change the tools location (move from $pkgdatadir to $pkglibdir/tools)
460 - fix the dist archive and add a check for including svn/git files in
462 - some developer-related changes: improve the burnin and the QA suite,
463 add an upload script for testing during development
469 - experimental HVM support, read the install document, section
470 "Initializing the cluster"
471 - allow for the PVM hypervisor per-instance kernel and initrd paths
472 - add a new command ``gnt-cluster verify-disks`` which uses a new
473 algorithm to improve the reconnection of the DRBD pairs if the device
474 on the secondary node has gone away
475 - make logical volume code auto-activate LVs at disk activation time
476 - slightly improve the speed of activating disks
477 - allow specification of the MAC address at instance creation time, and
478 changing it later via ``gnt-instance modify``
479 - fix handling of external commands that generate lots of output on
481 - update documentation with regard to minimum version of DRBD8 supported
487 - Log the ``xm create`` output to the node daemon log on failure (to
488 help diagnosing the error)
489 - In debug mode, log all external commands output if failed to the logs
490 - Change parsing of lvm commands to ignore stderr
496 - Another round of updates to the DRBD 8 code to deal with more failures
497 in the replace secondary node operation
498 - Some more logging of failures in disk operations (lvm, drbd)
499 - A few documentation updates
506 - Change configuration file format from Python's Pickle to JSON.
507 Upgrading is possible using the cfgupgrade utility.
508 - Add support for DRBD 8.0 (new disk template ``drbd``) which allows for
509 faster replace disks and is more stable (DRBD 8 has many improvements
510 compared to DRBD 0.7)
511 - Added command line tags support (see man pages for ``gnt-instance``,
512 ``gnt-node``, ``gnt-cluster``)
513 - Added instance rename support
514 - Added multi-instance startup/shutdown
515 - Added cluster rename support
516 - Added ``gnt-node evacuate`` to simplify some node operations
517 - Added instance reboot operation that can speedup reboot as compared to
519 - Soften the requirement that hostnames are in FQDN format
520 - The ``ganeti-watcher`` now activates drbd pairs after secondary node
522 - Removed dependency on debian's patched fping that uses the
523 non-standard ``-S`` option
524 - Now the OS definitions are searched for in multiple, configurable
525 paths (easier for distros to package)
526 - Some changes to the hooks infrastructure (especially the new
527 post-configuration update hook)
528 - Other small bugfixes
530 .. vim: set textwidth=72 :