Synnefo » snf-ganeti

Version 0.1.8 (Tue, 29 Sep 2009):

  - Brown-paper-bag release fixing haddock issues

Version 0.1.7 (Mon, 28 Sep 2009):

  - Fixed a bug in the Luxi backend for big responses

  - Fixed test suite exit code in presence of test failures

  - Changed the migrate operation to run instead failover for instances

    which were marked as not running in the input data (this could have

    been changed since then, but it's better than today's always

    migrate)

  - Added support for 'cheap' moves only (only migrate/failover) in

    balancing

  - Added support for building without curl (thus no RAPI backend)

Version 0.1.6 (Wed, 19 Aug 2009):

  - Added support for Luxi (the native Ganeti protocol)

  - Added support for simulated clusters (for hspace only)

  - Added timeouts for the RAPI backend

  - Fixed a few inconsistencies in the command line handling

  - Fixed handling of errors while loading data

  - The 'network' is a new dependency due to the Luxi addition

Version 0.1.5 (Thu, 09 Jul 2009):

  - Removed obsolete hn1 program; this allowed removal of a lot of

    supporting code

  - Lots of changes in hspace: the output now is a shell fragment in

    order for script to source it or parse it easier; added failure

    reasons; optimised to use less memory for large clusters

  - Optimized the scoring algorithm (used by all tools) so that now

    computations should be faster

Version 0.1.4 (Tue, 16 Jun 2009):

  - Added CPU count/ratio of virtual-to-physical CPUs to the cluster

    scoring methods; this means that now the balancer, the iallocator

    plugin and so on will try to keep the VCPU-to-PCPU ratio equal

    across the cluster

  - Fixed some hscan bugs

  - Fixed the way iallocator reads the total disk size (was broken and

    it was always falling back to summing the disk sizes)

  - Internals: fixed most compile-time warnings

Version 0.1.3 (Fri, 05 Jun 2009):

  - Fix a bug in the ReplacePrimary instance moves, affecting most of

    the tools

Version 0.1.2 (Tue, 02 Jun 2009):

  - Add a new program, “hspace”, which computes the free space on a

    cluster (based on a given instance spec)

  - Improvements in API docs and partially in the user docs

  - Started adding unittests

Version 0.1.1 (Tue, 26 May 2009):

  - Add a new program, “hail”, which is an iallocator plugin and can

    allocate/relocate instances

  - Experimental support for non-mirrored instances (hail supports them,

    hbal should no longer abort when it finds such instances and simply

    ignore them)

  - The RAPI port and/or scheme can be overriden now, and even “file://”

    schemes can be used if the message body has been saved under the

    appropriate name

  - Lots of code reorganization, esp. rewritten loading pipeline

  - Better data checking and better error messages in case validation

    fails; tools now consider nodes with error in input data (‘?’

    returned by ganeti) as offline

  - Small enhancement to the makefile for simpler packaging

Version 0.1.0 (Tue, 19 May 2009):

  - Drop compatibility with Ganeti 1.2

  - Add a new minimum score option (with a very low default), should

    help with very good clusters (but is still not optimal)

  - Add a --quiet option to hbal

  - Add support for reading offline nodes directly from the cluster

Version 0.0.8 (Tue, 21 Apr 2009):

  - hbal: prevent mismatches in wrong node names being passed to -O, by

    aborting in this case

  - add the ability to write the commands (-C) to a script via

    (-C<file>), so that it can be later executed directly; this has also

    changed the commands to include the ncessary -f flags to skip

    confirmations

  - add checks for extra argument in hbal and hn1, so that unintended

    errors are catched

  - raise the accepted “missing” memory limit to 512MB, to cover usual

    Xen reservations

Version 0.0.7 (Mon, 23 Mar 2009):

  - added support for offline nodes, which are not used as targets for

    instance relocation and if they hold instances the hbal algorithm

    will attempt to relocate these away

  - added support for offline instances, which now will no longer skew

    the free memory estimation of nodes; the algorithm will no longer

    create conditions for N+1 failures when such instances are later

    started

  - implemented a complete model of node resources, in order to

    prevent an unintended re-occurrence of cases like the offline

    instance were we miscalculate some node resource; this gives warning

    now in case the node reported free disk or free memory deviates by

    more than a set amount from the expected value

  - a new tool *hscan* that can generate the input text-file for the

    other tools by collection via RAPI

  - some small changes to the build system to make it more friendly;

    also included the generated documentation in the source archive

Version 0.0.6 (Mon, 16 Mar 2009):

  - re-factored the hbal algorithm to make it stable in the sense that it

    gives the same solution when restarted from the middle; barring

    rounding of disk/memory and incomplete reporting from Ganeti (for

    1.2), it should be now feasible to rely on its output without

    generating moves ad infinitum

  - the hbal algorithm now uses two more variables: the node N+1

    failures and the amount of reserved memory; the first of which tries

    to ‘fix’ the N+1 status, the latter tries to distribute secondaries

    more equally

  - the hbal algorithm now uses two more moves at each step:

    replace+failover and failover+replace (besides the original

    failover, replace, and failover+replace+failover)

  - slightly changed the build system to embed GIT version/tags into the

    binaries so that we know for a binary from which tree it was done,

    either via ‘--version’ or via “strings hbal|grep version”

  - changed the solution list and in general the hbal output to be more

    clear by default, and changed “gnt-instance failover” to

    “gnt-instance migrate”

  - added man pages for the two binaries

Version 0.0.5 (Mon, 09 Mar 2009):

  - a few small improvements for hbal (possibly undone by later

    changes), hbal is now quite faster

  - fix documentation building

  - allow hbal to work on non N+1 compliant clusters, but without

    guarantees that the end cluster will be compliant; in any case, this

    should give a smaller number of nodes that are not compliant if the

    cluster state permits it

  - strip common domain suffix from nodes and instances, so that output

    is shorter and hopefully clearer

Version 0.0.4 (Sun, 15 Feb 2009):

  - better balancing algorithm in hbal

  - implemented an RAPI collector, now the cluster data can be gathered

    automatically via RAPI and doesn't need manual export of node and

    instance list

Version 0.0.3 (Wed, 28 Jan 2009):

  - initial release of the hbal, a cluster rebalancing tool

  - input data format changed due to hbal requirements

Version 0.0.2 (Tue, 06 Jan 2009):

  - fix handling of some common cases (cluster N+1 compliant from the

    start, too big depth given, failure to compute solution)

  - add option to print the needed command list for reaching the

    proposed solution

Version 0.0.1 (Tue, 06 Jan 2009):

  - initial release of hn1 tool