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@jfriesse jfriesse released this 06 Mar 16:12
v2.4.0
a3dba5d

I am pleased to announce the latest release of Corosync
2.4.0 available immediately from our website at
http://build.clusterlabs.org/corosync/releases/.

This release is mostly about long awaited QDevice feature and few rather small fixes.

Qdevice is complete rewrite of old cman qdisk using network arbiter (instead of disk) so it's very similar to Linux HA quorum daemon/HP Serviceguard Quorum Server/...

Qdevice currently consists of two daemons:

  • corosync-qdevice is a daemon running on each node of a cluster. It provides a configured number of votes to the quorum subsystem based on a third-party arbitrator’s decision. Its primary use is to allow a cluster to sustain more node failures than standard quorum rules allow. It is recommended for clusters with an even number of nodes and highly recommended for 2 node clusters.

  • corosync-qnetd is a daemon running outside of the cluster with the purpose of providing a vote to the corosync-qdevice model net. It’s
    designed to support multiple clusters and be almost configuration and
    state free. New clusters are handled dynamically and no configuration
    file exists. It’s also able to run as non-root user - which is recommended. Connection between the corosync-qdevice model net client can be optionally configured with TLS client certificate checking. The communication protocol between server and client is designed to be very simple and allow backwards compatibility.

To compile corosync-qdevice/corosync-qnetd, configure.sh has to be invoked with --enable-qdevices/--enable-qnetd switches.

To find out how to configure qdevice/qnetd take a look to man pages corosync-qdevice (8) and corosync-qnetd (8).

Please note that because of required changes in votequorum, libvotequorum is no longer binary compatible. This is reason for version bump.

Starting with this release 2.3 branch becomes unsupported and officially supported Needle is 2.4 branch. Just a note, this doesn't affect support of Flatiron where nothing changes and 1.4 branch is still supported.

Changelog for fixes for 2.4.0 (qdevices commits not included):

Ferenc Wágner (8):
      cmap_track_add.3.in: fix typo: bellow -> below
      Fix typo: funtion -> function
      Fix typo: interger -> integer
      Fix typo: Uknown -> Unknown
      Fix typo: aquire -> acquire
      Fix typo: retrive -> retrieve
      Fix typo: alocated -> allocated
      Fix typo: Diabled -> disabled

Jan Friesse (1):
      config: get_cluster_mcast_addr error is not fatal

bliu (1):
      low:typo fix in sam.h

Upgrade is (more than usually) highly recommended.

Thanks/congratulations to all people that contributed to achieve this
great milestone.

Assets 6