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1.3. Clustering
- Support for redundant ring for standalone Corosync, BZ#722469
- Red Hat Enterprise Linux 6.2 introduces support for redundant ring with autorecovery feature as a Technology Preview. Refer to Section 2.7, “Clustering” for a list of known issues associated with this Technology Preview.
- corosync-cpgtool, BZ#688260
- The corosync-cpgtool now specifies both interfaces in a dual ring configuration. This feature is a Technology Preview.
- Disabling rgmanager in /etc/cluster.conf, BZ#723925
- As a consequence of converting the
/etc/cluster.confconfiguration file to be used by pacemaker, rgmanager must be disabled. The risk of not doing this is high; after a successful conversion, it would be possible to start rgmanager and pacemaker on the same host, managing the same resources.Consequently, Red Hat Enterprise Linux 6.2 includes a feature (as a Technology Preview) that forces the following requirements:- rgmanager must refuse to start if it sees the
<rm disabled="1">flag in/etc/cluster.conf. - rgmanager must stop any resources and exit if the
<rm disabled="1">flag appears in/etc/cluster.confduring a reconfiguration.
- pacemaker, BZ#456895
- Pacemaker, a scalable high-availability cluster resource manager, is included in Red Hat Enterprise Linux 6 as a Technology Preview. Pacemaker is not fully integrated with the Red Hat cluster stack.
