diff --git a/NEWS b/NEWS index 75001ad17cf45aef4fbf4bf4d173b50024c19742..186d2ebccb7fe5026465c55bcfdefed00d43c1af 100644 --- a/NEWS +++ b/NEWS @@ -1,153 +1,193 @@ -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, βhspaceβ, 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, βhailβ, 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 βfile://β - 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 (β?β - 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 βmissingβ 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 βfixβ 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 β--versionβ or via βstrings hbal|grep versionβ - - changed the solution list and in general the hbal output to be more - clear by default, and changed βgnt-instance failoverβ to - βgnt-instance migrateβ - - 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 +Ganeti-htools release notes +=========================== + +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, βhspaceβ, 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, βhailβ, 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 βfile://β + 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 (β?β 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 βmissingβ 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 βfixβ + 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 β--versionβ or via βstrings hbal|grep versionβ +- changed the solution list and in general the hbal output to be more + clear by default, and changed βgnt-instance failoverβ to βgnt-instance + migrateβ +- 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 + +.. vim: set textwidth=72 : +.. 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