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 physical volumes on nodes (``gnt-node
47 physical-volumes``) and to modify them (``gnt-node modify-volume``)
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-volume`` command to repair damanged 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 more unittests
72 - Fixed critical bug in ganeti-masterd startup
73 - Pass ``INSTANCE_REINSTALL`` variable to OS installation script when
74 reinstalling an instance
75 - Converted to Sphinx (http://sphinx.pocoo.org/) for documentation
76 - Many documentation updates
77 - Distribute hypervisor files on ``gnt-cluster redist-conf``
78 - ``gnt-instance reinstall`` can now reinstall multiple instances
79 - Updated many command line parameters
80 - Introduced new OS API version 15
81 - No longer support a default hypervisor
82 - Treat virtual LVs as inexistent
83 - Improved job locking logic to reduce lock contention
84 - Match instance and node names case insensitively
85 - Reimplemented bash completion script to be more complete
92 - Fixed many wrong messages
93 - Fixed a few bugs related to the locking library
94 - Fixed MAC checking at instance creation time
95 - Fixed a DRBD parsing bug related to gaps in /proc/drbd
96 - Fixed a few issues related to signal handling in both daemons and
98 - Fixed the example startup script provided
99 - Fixed insserv dependencies in the example startup script (patch from
101 - Fixed handling of drained nodes in the iallocator framework
102 - Fixed handling of KERNEL_PATH parameter for xen-hvm (Debian bug
104 - Fixed error related to invalid job IDs in job polling
105 - Fixed job/opcode persistence on unclean master shutdown
106 - Fixed handling of partial job processing after unclean master
108 - Fixed error reporting from LUs, previously all errors were converted
109 into execution errors
110 - Fixed error reporting from burnin
111 - Decreased significantly the memory usage of the job queue
112 - Optimised slightly multi-job submission
113 - Optimised slightly opcode loading
114 - Backported the multi-job submit framework from the development
115 branch; multi-instance start and stop should be faster
116 - Added script to clean archived jobs after 21 days; this will reduce
117 the size of the queue directory
118 - Added some extra checks in disk size tracking
119 - Added an example ethers hook script
120 - Added a cluster parameter that prevents Ganeti from modifying of
122 - Added more node information to RAPI responses
123 - Added a ``gnt-job watch`` command that allows following the ouput of a
125 - Added a bind-address option to ganeti-rapi
126 - Added more checks to the configuration verify
127 - Enhanced the burnin script such that some operations can be retried
129 - Converted instance reinstall to multi-instance model
135 - Added ``--ignore-size`` to the ``gnt-instance activate-disks`` command
136 to allow using the pre-2.0.2 behaviour in activation, if any existing
137 instances have mismatched disk sizes in the configuration
138 - Added ``gnt-cluster repair-disk-sizes`` command to check and update
139 any configuration mismatches for disk sizes
140 - Added ``gnt-master cluste-failover --no-voting`` to allow master
141 failover to work on two-node clusters
142 - Fixed the ``--net`` option of ``gnt-backup import``, which was
144 - Fixed detection of OS script errors in ``gnt-backup export``
145 - Fixed exit code of ``gnt-backup export``
151 - Added experimental support for stripped logical volumes; this should
152 enhance performance but comes with a higher complexity in the block
153 device handling; stripping is only enabled when passing
154 ``--with-lvm-stripecount=N`` to ``configure``, but codepaths are
155 affected even in the non-stripped mode
156 - Improved resiliency against transient failures at the end of DRBD
157 resyncs, and in general of DRBD resync checks
158 - Fixed a couple of issues with exports and snapshot errors
159 - Fixed a couple of issues in instance listing
160 - Added display of the disk size in ``gnt-instance info``
161 - Fixed checking for valid OSes in instance creation
162 - Fixed handling of the "vcpus" parameter in instance listing and in
163 general of invalid parameters
164 - Fixed http server library, and thus RAPI, to handle invalid
165 username/password combinations correctly; this means that now they
166 report unauthorized for queries too, not only for modifications,
167 allowing earlier detect of configuration problems
168 - Added a new "role" node list field, equivalent to the master/master
169 candidate/drained/offline flags combinations
170 - Fixed cluster modify and changes of candidate pool size
171 - Fixed cluster verify error messages for wrong files on regular nodes
172 - Fixed a couple of issues with node demotion from master candidate role
173 - Fixed node readd issues
174 - Added non-interactive mode for ``ganeti-masterd --no-voting`` startup
175 - Added a new ``--no-voting`` option for masterfailover to fix failover
176 on two-nodes clusters when the former master node is unreachable
177 - Added instance reinstall over RAPI
183 - added ``-H``/``-B`` startup parameters to ``gnt-instance``, which will
184 allow re-adding the start in single-user option (regression from 1.2)
185 - the watcher writes the instance status to a file, to allow monitoring
186 to report the instance status (from the master) based on cached
187 results of the watcher's queries; while this can get stale if the
188 watcher is being locked due to other work on the cluster, this is
190 - the watcher now also restarts the node daemon and the rapi daemon if
192 - fixed the watcher to handle full and drained queue cases
193 - hooks export more instance data in the environment, which helps if
194 hook scripts need to take action based on the instance's properties
195 (no longer need to query back into ganeti)
196 - instance failovers when the instance is stopped do not check for free
197 RAM, so that failing over a stopped instance is possible in low memory
199 - rapi uses queries for tags instead of jobs (for less job traffic), and
200 for cluster tags it won't talk to masterd at all but read them from
202 - a couple of error handling fixes in RAPI
203 - drbd handling: improved the error handling of inconsistent disks after
204 resync to reduce the frequency of "there are some degraded disks for
205 this instance" messages
206 - fixed a bug in live migration when DRBD doesn't want to reconnect (the
207 error handling path called a wrong function name)
213 - no changes from rc5
216 Version 2.0 release candidate 5
217 -------------------------------
219 - fix a couple of bugs (validation, argument checks)
220 - fix ``gnt-cluster getmaster`` on non-master nodes (regression)
221 - some small improvements to RAPI and IAllocator
222 - make watcher automatically start the master daemon if down
225 Version 2.0 release candidate 4
226 -------------------------------
228 - change the OS list to not require locks; this helps with big clusters
229 - fix ``gnt-cluster verify`` and ``gnt-cluster verify-disks`` when the
230 volume group is broken
231 - ``gnt-instance info``, without any arguments, doesn't run for all
232 instances anymore; either pass ``--all`` or pass the desired
233 instances; this helps against mistakes on big clusters where listing
234 the information for all instances takes a long time
235 - miscellaneous doc and man pages fixes
238 Version 2.0 release candidate 3
239 -------------------------------
241 - Change the internal locking model of some ``gnt-node`` commands, in
242 order to reduce contention (and blocking of master daemon) when
243 batching many creation/reinstall jobs
244 - Fixes to Xen soft reboot
245 - No longer build documentation at build time, instead distribute it in
246 the archive, in order to reduce the need for the whole docbook/rst
250 Version 2.0 release candidate 2
251 -------------------------------
253 - Now the cfgupgrade scripts works and can upgrade 1.2.7 clusters to 2.0
254 - Fix watcher startup sequence, improves the behaviour of busy clusters
255 - Some other fixes in ``gnt-cluster verify``, ``gnt-instance
256 replace-disks``, ``gnt-instance add``, ``gnt-cluster queue``, KVM VNC
257 bind address and other places
258 - Some documentation fixes and updates
261 Version 2.0 release candidate 1
262 -------------------------------
264 - More documentation updates, now all docs should be more-or-less
266 - A couple of small fixes (mixed hypervisor clusters, offline nodes,
268 - Added a customizable HV_KERNEL_ARGS hypervisor parameter (for Xen PVM
270 - Fix an issue related to $libdir/run/ganeti and cluster creation
276 - Xen PVM and KVM have switched the default value for the instance root
277 disk to the first partition on the first drive, instead of the whole
278 drive; this means that the OS installation scripts must be changed
280 - Man pages have been updated
281 - RAPI has been switched by default to HTTPS, and the exported functions
282 should all work correctly
283 - RAPI v1 has been removed
284 - Many improvements to the KVM hypervisor
285 - Block device errors are now better reported
286 - Many other bugfixes and small improvements
292 - Version 2 is a general rewrite of the code and therefore the
293 differences are too many to list, see the design document for 2.0 in
294 the ``doc/`` subdirectory for more details
295 - In this beta version there is not yet a migration path from 1.2 (there
296 will be one in the final 2.0 release)
297 - A few significant changes are:
299 - all commands are executed by a daemon (``ganeti-masterd``) and the
300 various ``gnt-*`` commands are just front-ends to it
301 - all the commands are entered into, and executed from a job queue,
302 see the ``gnt-job(8)`` manpage
303 - the RAPI daemon supports read-write operations, secured by basic
304 HTTP authentication on top of HTTPS
305 - DRBD version 0.7 support has been removed, DRBD 8 is the only
306 supported version (when migrating from Ganeti 1.2 to 2.0, you need
307 to migrate to DRBD 8 first while still running Ganeti 1.2)
308 - DRBD devices are using statically allocated minor numbers, which
309 will be assigned to existing instances during the migration process
310 - there is support for both Xen PVM and Xen HVM instances running on
312 - KVM virtualization is supported too
313 - file-based storage has been implemented, which means that it is
314 possible to run the cluster without LVM and DRBD storage, for
315 example using a shared filesystem exported from shared storage (and
316 still have live migration)
322 - Change the default reboot type in ``gnt-instance reboot`` to "hard"
323 - Reuse the old instance mac address by default on instance import, if
324 the instance name is the same.
325 - Handle situations in which the node info rpc returns incomplete
327 - Add checks for tcp/udp ports collisions in ``gnt-cluster verify``
328 - Improved version of batcher:
331 - instance mac address support
332 - support for HVM clusters/instances
334 - Add an option to show the number of cpu sockets and nodes in
336 - Support OSes that handle more than one version of the OS api (but do
337 not change the current API in any other way)
338 - Fix ``gnt-node migrate``
339 - ``gnt-debug`` man page
340 - Fixes various more typos and small issues
341 - Increase disk resync maximum speed to 60MB/s (from 30MB/s)
347 - new ``--hvm-nic-type`` and ``--hvm-disk-type`` flags to control the
348 type of disk exported to fully virtualized instances.
349 - provide access to the serial console of HVM instances
350 - instance auto_balance flag, set by default. If turned off it will
351 avoid warnings on cluster verify if there is not enough memory to fail
352 over an instance. in the future it will prevent automatically failing
353 it over when we will support that.
354 - batcher tool for instance creation, see ``tools/README.batcher``
355 - ``gnt-instance reinstall --select-os`` to interactively select a new
356 operating system when reinstalling an instance.
357 - when changing the memory amount on instance modify a check has been
358 added that the instance will be able to start. also warnings are
359 emitted if the instance will not be able to fail over, if auto_balance
361 - documentation fixes
362 - sync fields between ``gnt-instance list/modify/add/import``
363 - fix a race condition in drbd when the sync speed was set after giving
364 the device a remote peer.
370 - note: the allowed size and number of tags per object were reduced
371 - fix a bug in ``gnt-cluster verify`` with inconsistent volume groups
372 - fixed twisted 8.x compatibility
373 - fixed ``gnt-instance replace-disks`` with iallocator
374 - add TCP keepalives on twisted connections to detect restarted nodes
375 - disk increase support, see ``gnt-instance grow-disk``
376 - implement bulk node/instance query for RAPI
377 - add tags in node/instance listing (optional)
378 - experimental migration (and live migration) support, read the man page
379 for ``gnt-instance migrate``
380 - the ``ganeti-watcher`` logs are now timestamped, and the watcher also
381 has some small improvements in handling its state file
387 - Experimental readonly, REST-based remote API implementation;
388 automatically started on master node, TCP port 5080, if enabled by
389 ``--enable-rapi`` parameter to configure script.
390 - Instance allocator support. Add and import instance accept a
391 ``--iallocator`` parameter, and call that instance allocator to decide
392 which node to use for the instance. The iallocator document describes
393 what's expected from an allocator script.
394 - ``gnt-cluster verify`` N+1 memory redundancy checks: Unless passed the
395 ``--no-nplus1-mem`` option ``gnt-cluster verify`` now checks that if a
396 node is lost there is still enough memory to fail over the instances
398 - ``gnt-cluster verify`` hooks: it is now possible to add post-hooks to
399 ``gnt-cluster verify``, to check for site-specific compliance. All the
400 hooks will run, and their output, if any, will be displayed. Any
401 failing hook will make the verification return an error value.
402 - ``gnt-cluster verify`` now checks that its peers are reachable on the
403 primary and secondary interfaces
404 - ``gnt-node add`` now supports the ``--readd`` option, to readd a node
405 that is still declared as part of the cluster and has failed.
406 - ``gnt-* list`` commands now accept a new ``-o +field`` way of
407 specifying output fields, that just adds the chosen fields to the
409 - ``gnt-backup`` now has a new ``remove`` command to delete an existing
410 export from the filesystem.
411 - New per-instance parameters hvm_acpi, hvm_pae and hvm_cdrom_image_path
412 have been added. Using them you can enable/disable acpi and pae
413 support, and specify a path for a cd image to be exported to the
414 instance. These parameters as the name suggest only work on HVM
416 - When upgrading an HVM cluster to Ganeti 1.2.4, the values for ACPI and
417 PAE support will be set to the previously hardcoded values, but the
418 (previously hardcoded) path to the CDROM ISO image will be unset and
419 if required, needs to be set manually with ``gnt-instance modify``
421 - The address to which an instance's VNC console is bound is now
422 selectable per-instance, rather than being cluster wide. Of course
423 this only applies to instances controlled via VNC, so currently just
424 applies to HVM clusters.
430 - more tweaks to the disk activation code (especially helpful for DRBD)
431 - change the default ``gnt-instance list`` output format, now there is
432 one combined status field (see the manpage for the exact values this
434 - some more fixes for the mac export to hooks change
435 - make Ganeti not break with DRBD 8.2.x (which changed the version
436 format in ``/proc/drbd``) (issue 24)
437 - add an upgrade tool from "remote_raid1" disk template to "drbd" disk
438 template, allowing migration from DRBD0.7+MD to DRBD8
444 - fix ``gnt-instance modify`` breakage introduced in 1.2.1 with the HVM
446 - add command aliases infrastructure and a few aliases
447 - allow listing of VCPUs in the ``gnt-instance list`` and improve the
448 man pages and the ``--help`` option of ``gnt-node
449 list``/``gnt-instance list``
450 - fix ``gnt-backup list`` with down nodes (issue 21)
451 - change the tools location (move from $pkgdatadir to $pkglibdir/tools)
452 - fix the dist archive and add a check for including svn/git files in
454 - some developer-related changes: improve the burnin and the QA suite,
455 add an upload script for testing during development
461 - experimental HVM support, read the install document, section
462 "Initializing the cluster"
463 - allow for the PVM hypervisor per-instance kernel and initrd paths
464 - add a new command ``gnt-cluster verify-disks`` which uses a new
465 algorithm to improve the reconnection of the DRBD pairs if the device
466 on the secondary node has gone away
467 - make logical volume code auto-activate LVs at disk activation time
468 - slightly improve the speed of activating disks
469 - allow specification of the MAC address at instance creation time, and
470 changing it later via ``gnt-instance modify``
471 - fix handling of external commands that generate lots of output on
473 - update documentation with regard to minimum version of DRBD8 supported
479 - Log the ``xm create`` output to the node daemon log on failure (to
480 help diagnosing the error)
481 - In debug mode, log all external commands output if failed to the logs
482 - Change parsing of lvm commands to ignore stderr
488 - Another round of updates to the DRBD 8 code to deal with more failures
489 in the replace secondary node operation
490 - Some more logging of failures in disk operations (lvm, drbd)
491 - A few documentation updates
498 - Change configuration file format from Python's Pickle to JSON.
499 Upgrading is possible using the cfgupgrade utility.
500 - Add support for DRBD 8.0 (new disk template ``drbd``) which allows for
501 faster replace disks and is more stable (DRBD 8 has many improvements
502 compared to DRBD 0.7)
503 - Added command line tags support (see man pages for ``gnt-instance``,
504 ``gnt-node``, ``gnt-cluster``)
505 - Added instance rename support
506 - Added multi-instance startup/shutdown
507 - Added cluster rename support
508 - Added ``gnt-node evacuate`` to simplify some node operations
509 - Added instance reboot operation that can speedup reboot as compared to
511 - Soften the requirement that hostnames are in FQDN format
512 - The ``ganeti-watcher`` now activates drbd pairs after secondary node
514 - Removed dependency on debian's patched fping that uses the
515 non-standard ``-S`` option
516 - Now the OS definitions are searched for in multiple, configurable
517 paths (easier for distros to package)
518 - Some changes to the hooks infrastructure (especially the new
519 post-configuration update hook)
520 - Other small bugfixes
522 .. vim: set textwidth=72 :