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
87 - Added option to specify maximum timeout on instance shutdown
93 - Fixed many wrong messages
94 - Fixed a few bugs related to the locking library
95 - Fixed MAC checking at instance creation time
96 - Fixed a DRBD parsing bug related to gaps in /proc/drbd
97 - Fixed a few issues related to signal handling in both daemons and
99 - Fixed the example startup script provided
100 - Fixed insserv dependencies in the example startup script (patch from
102 - Fixed handling of drained nodes in the iallocator framework
103 - Fixed handling of KERNEL_PATH parameter for xen-hvm (Debian bug
105 - Fixed error related to invalid job IDs in job polling
106 - Fixed job/opcode persistence on unclean master shutdown
107 - Fixed handling of partial job processing after unclean master
109 - Fixed error reporting from LUs, previously all errors were converted
110 into execution errors
111 - Fixed error reporting from burnin
112 - Decreased significantly the memory usage of the job queue
113 - Optimised slightly multi-job submission
114 - Optimised slightly opcode loading
115 - Backported the multi-job submit framework from the development
116 branch; multi-instance start and stop should be faster
117 - Added script to clean archived jobs after 21 days; this will reduce
118 the size of the queue directory
119 - Added some extra checks in disk size tracking
120 - Added an example ethers hook script
121 - Added a cluster parameter that prevents Ganeti from modifying of
123 - Added more node information to RAPI responses
124 - Added a ``gnt-job watch`` command that allows following the ouput of a
126 - Added a bind-address option to ganeti-rapi
127 - Added more checks to the configuration verify
128 - Enhanced the burnin script such that some operations can be retried
130 - Converted instance reinstall to multi-instance model
136 - Added ``--ignore-size`` to the ``gnt-instance activate-disks`` command
137 to allow using the pre-2.0.2 behaviour in activation, if any existing
138 instances have mismatched disk sizes in the configuration
139 - Added ``gnt-cluster repair-disk-sizes`` command to check and update
140 any configuration mismatches for disk sizes
141 - Added ``gnt-master cluste-failover --no-voting`` to allow master
142 failover to work on two-node clusters
143 - Fixed the ``--net`` option of ``gnt-backup import``, which was
145 - Fixed detection of OS script errors in ``gnt-backup export``
146 - Fixed exit code of ``gnt-backup export``
152 - Added experimental support for stripped logical volumes; this should
153 enhance performance but comes with a higher complexity in the block
154 device handling; stripping is only enabled when passing
155 ``--with-lvm-stripecount=N`` to ``configure``, but codepaths are
156 affected even in the non-stripped mode
157 - Improved resiliency against transient failures at the end of DRBD
158 resyncs, and in general of DRBD resync checks
159 - Fixed a couple of issues with exports and snapshot errors
160 - Fixed a couple of issues in instance listing
161 - Added display of the disk size in ``gnt-instance info``
162 - Fixed checking for valid OSes in instance creation
163 - Fixed handling of the "vcpus" parameter in instance listing and in
164 general of invalid parameters
165 - Fixed http server library, and thus RAPI, to handle invalid
166 username/password combinations correctly; this means that now they
167 report unauthorized for queries too, not only for modifications,
168 allowing earlier detect of configuration problems
169 - Added a new "role" node list field, equivalent to the master/master
170 candidate/drained/offline flags combinations
171 - Fixed cluster modify and changes of candidate pool size
172 - Fixed cluster verify error messages for wrong files on regular nodes
173 - Fixed a couple of issues with node demotion from master candidate role
174 - Fixed node readd issues
175 - Added non-interactive mode for ``ganeti-masterd --no-voting`` startup
176 - Added a new ``--no-voting`` option for masterfailover to fix failover
177 on two-nodes clusters when the former master node is unreachable
178 - Added instance reinstall over RAPI
184 - added ``-H``/``-B`` startup parameters to ``gnt-instance``, which will
185 allow re-adding the start in single-user option (regression from 1.2)
186 - the watcher writes the instance status to a file, to allow monitoring
187 to report the instance status (from the master) based on cached
188 results of the watcher's queries; while this can get stale if the
189 watcher is being locked due to other work on the cluster, this is
191 - the watcher now also restarts the node daemon and the rapi daemon if
193 - fixed the watcher to handle full and drained queue cases
194 - hooks export more instance data in the environment, which helps if
195 hook scripts need to take action based on the instance's properties
196 (no longer need to query back into ganeti)
197 - instance failovers when the instance is stopped do not check for free
198 RAM, so that failing over a stopped instance is possible in low memory
200 - rapi uses queries for tags instead of jobs (for less job traffic), and
201 for cluster tags it won't talk to masterd at all but read them from
203 - a couple of error handling fixes in RAPI
204 - drbd handling: improved the error handling of inconsistent disks after
205 resync to reduce the frequency of "there are some degraded disks for
206 this instance" messages
207 - fixed a bug in live migration when DRBD doesn't want to reconnect (the
208 error handling path called a wrong function name)
214 - no changes from rc5
217 Version 2.0 release candidate 5
218 -------------------------------
220 - fix a couple of bugs (validation, argument checks)
221 - fix ``gnt-cluster getmaster`` on non-master nodes (regression)
222 - some small improvements to RAPI and IAllocator
223 - make watcher automatically start the master daemon if down
226 Version 2.0 release candidate 4
227 -------------------------------
229 - change the OS list to not require locks; this helps with big clusters
230 - fix ``gnt-cluster verify`` and ``gnt-cluster verify-disks`` when the
231 volume group is broken
232 - ``gnt-instance info``, without any arguments, doesn't run for all
233 instances anymore; either pass ``--all`` or pass the desired
234 instances; this helps against mistakes on big clusters where listing
235 the information for all instances takes a long time
236 - miscellaneous doc and man pages fixes
239 Version 2.0 release candidate 3
240 -------------------------------
242 - Change the internal locking model of some ``gnt-node`` commands, in
243 order to reduce contention (and blocking of master daemon) when
244 batching many creation/reinstall jobs
245 - Fixes to Xen soft reboot
246 - No longer build documentation at build time, instead distribute it in
247 the archive, in order to reduce the need for the whole docbook/rst
251 Version 2.0 release candidate 2
252 -------------------------------
254 - Now the cfgupgrade scripts works and can upgrade 1.2.7 clusters to 2.0
255 - Fix watcher startup sequence, improves the behaviour of busy clusters
256 - Some other fixes in ``gnt-cluster verify``, ``gnt-instance
257 replace-disks``, ``gnt-instance add``, ``gnt-cluster queue``, KVM VNC
258 bind address and other places
259 - Some documentation fixes and updates
262 Version 2.0 release candidate 1
263 -------------------------------
265 - More documentation updates, now all docs should be more-or-less
267 - A couple of small fixes (mixed hypervisor clusters, offline nodes,
269 - Added a customizable HV_KERNEL_ARGS hypervisor parameter (for Xen PVM
271 - Fix an issue related to $libdir/run/ganeti and cluster creation
277 - Xen PVM and KVM have switched the default value for the instance root
278 disk to the first partition on the first drive, instead of the whole
279 drive; this means that the OS installation scripts must be changed
281 - Man pages have been updated
282 - RAPI has been switched by default to HTTPS, and the exported functions
283 should all work correctly
284 - RAPI v1 has been removed
285 - Many improvements to the KVM hypervisor
286 - Block device errors are now better reported
287 - Many other bugfixes and small improvements
293 - Version 2 is a general rewrite of the code and therefore the
294 differences are too many to list, see the design document for 2.0 in
295 the ``doc/`` subdirectory for more details
296 - In this beta version there is not yet a migration path from 1.2 (there
297 will be one in the final 2.0 release)
298 - A few significant changes are:
300 - all commands are executed by a daemon (``ganeti-masterd``) and the
301 various ``gnt-*`` commands are just front-ends to it
302 - all the commands are entered into, and executed from a job queue,
303 see the ``gnt-job(8)`` manpage
304 - the RAPI daemon supports read-write operations, secured by basic
305 HTTP authentication on top of HTTPS
306 - DRBD version 0.7 support has been removed, DRBD 8 is the only
307 supported version (when migrating from Ganeti 1.2 to 2.0, you need
308 to migrate to DRBD 8 first while still running Ganeti 1.2)
309 - DRBD devices are using statically allocated minor numbers, which
310 will be assigned to existing instances during the migration process
311 - there is support for both Xen PVM and Xen HVM instances running on
313 - KVM virtualization is supported too
314 - file-based storage has been implemented, which means that it is
315 possible to run the cluster without LVM and DRBD storage, for
316 example using a shared filesystem exported from shared storage (and
317 still have live migration)
323 - Change the default reboot type in ``gnt-instance reboot`` to "hard"
324 - Reuse the old instance mac address by default on instance import, if
325 the instance name is the same.
326 - Handle situations in which the node info rpc returns incomplete
328 - Add checks for tcp/udp ports collisions in ``gnt-cluster verify``
329 - Improved version of batcher:
332 - instance mac address support
333 - support for HVM clusters/instances
335 - Add an option to show the number of cpu sockets and nodes in
337 - Support OSes that handle more than one version of the OS api (but do
338 not change the current API in any other way)
339 - Fix ``gnt-node migrate``
340 - ``gnt-debug`` man page
341 - Fixes various more typos and small issues
342 - Increase disk resync maximum speed to 60MB/s (from 30MB/s)
348 - new ``--hvm-nic-type`` and ``--hvm-disk-type`` flags to control the
349 type of disk exported to fully virtualized instances.
350 - provide access to the serial console of HVM instances
351 - instance auto_balance flag, set by default. If turned off it will
352 avoid warnings on cluster verify if there is not enough memory to fail
353 over an instance. in the future it will prevent automatically failing
354 it over when we will support that.
355 - batcher tool for instance creation, see ``tools/README.batcher``
356 - ``gnt-instance reinstall --select-os`` to interactively select a new
357 operating system when reinstalling an instance.
358 - when changing the memory amount on instance modify a check has been
359 added that the instance will be able to start. also warnings are
360 emitted if the instance will not be able to fail over, if auto_balance
362 - documentation fixes
363 - sync fields between ``gnt-instance list/modify/add/import``
364 - fix a race condition in drbd when the sync speed was set after giving
365 the device a remote peer.
371 - note: the allowed size and number of tags per object were reduced
372 - fix a bug in ``gnt-cluster verify`` with inconsistent volume groups
373 - fixed twisted 8.x compatibility
374 - fixed ``gnt-instance replace-disks`` with iallocator
375 - add TCP keepalives on twisted connections to detect restarted nodes
376 - disk increase support, see ``gnt-instance grow-disk``
377 - implement bulk node/instance query for RAPI
378 - add tags in node/instance listing (optional)
379 - experimental migration (and live migration) support, read the man page
380 for ``gnt-instance migrate``
381 - the ``ganeti-watcher`` logs are now timestamped, and the watcher also
382 has some small improvements in handling its state file
388 - Experimental readonly, REST-based remote API implementation;
389 automatically started on master node, TCP port 5080, if enabled by
390 ``--enable-rapi`` parameter to configure script.
391 - Instance allocator support. Add and import instance accept a
392 ``--iallocator`` parameter, and call that instance allocator to decide
393 which node to use for the instance. The iallocator document describes
394 what's expected from an allocator script.
395 - ``gnt-cluster verify`` N+1 memory redundancy checks: Unless passed the
396 ``--no-nplus1-mem`` option ``gnt-cluster verify`` now checks that if a
397 node is lost there is still enough memory to fail over the instances
399 - ``gnt-cluster verify`` hooks: it is now possible to add post-hooks to
400 ``gnt-cluster verify``, to check for site-specific compliance. All the
401 hooks will run, and their output, if any, will be displayed. Any
402 failing hook will make the verification return an error value.
403 - ``gnt-cluster verify`` now checks that its peers are reachable on the
404 primary and secondary interfaces
405 - ``gnt-node add`` now supports the ``--readd`` option, to readd a node
406 that is still declared as part of the cluster and has failed.
407 - ``gnt-* list`` commands now accept a new ``-o +field`` way of
408 specifying output fields, that just adds the chosen fields to the
410 - ``gnt-backup`` now has a new ``remove`` command to delete an existing
411 export from the filesystem.
412 - New per-instance parameters hvm_acpi, hvm_pae and hvm_cdrom_image_path
413 have been added. Using them you can enable/disable acpi and pae
414 support, and specify a path for a cd image to be exported to the
415 instance. These parameters as the name suggest only work on HVM
417 - When upgrading an HVM cluster to Ganeti 1.2.4, the values for ACPI and
418 PAE support will be set to the previously hardcoded values, but the
419 (previously hardcoded) path to the CDROM ISO image will be unset and
420 if required, needs to be set manually with ``gnt-instance modify``
422 - The address to which an instance's VNC console is bound is now
423 selectable per-instance, rather than being cluster wide. Of course
424 this only applies to instances controlled via VNC, so currently just
425 applies to HVM clusters.
431 - more tweaks to the disk activation code (especially helpful for DRBD)
432 - change the default ``gnt-instance list`` output format, now there is
433 one combined status field (see the manpage for the exact values this
435 - some more fixes for the mac export to hooks change
436 - make Ganeti not break with DRBD 8.2.x (which changed the version
437 format in ``/proc/drbd``) (issue 24)
438 - add an upgrade tool from "remote_raid1" disk template to "drbd" disk
439 template, allowing migration from DRBD0.7+MD to DRBD8
445 - fix ``gnt-instance modify`` breakage introduced in 1.2.1 with the HVM
447 - add command aliases infrastructure and a few aliases
448 - allow listing of VCPUs in the ``gnt-instance list`` and improve the
449 man pages and the ``--help`` option of ``gnt-node
450 list``/``gnt-instance list``
451 - fix ``gnt-backup list`` with down nodes (issue 21)
452 - change the tools location (move from $pkgdatadir to $pkglibdir/tools)
453 - fix the dist archive and add a check for including svn/git files in
455 - some developer-related changes: improve the burnin and the QA suite,
456 add an upload script for testing during development
462 - experimental HVM support, read the install document, section
463 "Initializing the cluster"
464 - allow for the PVM hypervisor per-instance kernel and initrd paths
465 - add a new command ``gnt-cluster verify-disks`` which uses a new
466 algorithm to improve the reconnection of the DRBD pairs if the device
467 on the secondary node has gone away
468 - make logical volume code auto-activate LVs at disk activation time
469 - slightly improve the speed of activating disks
470 - allow specification of the MAC address at instance creation time, and
471 changing it later via ``gnt-instance modify``
472 - fix handling of external commands that generate lots of output on
474 - update documentation with regard to minimum version of DRBD8 supported
480 - Log the ``xm create`` output to the node daemon log on failure (to
481 help diagnosing the error)
482 - In debug mode, log all external commands output if failed to the logs
483 - Change parsing of lvm commands to ignore stderr
489 - Another round of updates to the DRBD 8 code to deal with more failures
490 in the replace secondary node operation
491 - Some more logging of failures in disk operations (lvm, drbd)
492 - A few documentation updates
499 - Change configuration file format from Python's Pickle to JSON.
500 Upgrading is possible using the cfgupgrade utility.
501 - Add support for DRBD 8.0 (new disk template ``drbd``) which allows for
502 faster replace disks and is more stable (DRBD 8 has many improvements
503 compared to DRBD 0.7)
504 - Added command line tags support (see man pages for ``gnt-instance``,
505 ``gnt-node``, ``gnt-cluster``)
506 - Added instance rename support
507 - Added multi-instance startup/shutdown
508 - Added cluster rename support
509 - Added ``gnt-node evacuate`` to simplify some node operations
510 - Added instance reboot operation that can speedup reboot as compared to
512 - Soften the requirement that hostnames are in FQDN format
513 - The ``ganeti-watcher`` now activates drbd pairs after secondary node
515 - Removed dependency on debian's patched fping that uses the
516 non-standard ``-S`` option
517 - Now the OS definitions are searched for in multiple, configurable
518 paths (easier for distros to package)
519 - Some changes to the hooks infrastructure (especially the new
520 post-configuration update hook)
521 - Other small bugfixes
523 .. vim: set textwidth=72 :