Synnefo » snf-ganeti » ganeti-local

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