1.195. pacemaker

Updated pacemaker packages that fix various bugs and add one enhancement are now available for Red Hat Enterprise Linux 6.
Pacemaker is a high-availability cluster resource manager with a powerful policy engine.
Bug Fixes
The pacemaker packages have been upgraded to upstream version 1.1.5, which provides a number of bug fixes over the previous version.
Due to missing Cluster Resource Manager (CRM) scripts, an attempt to run the crm utility caused the following message to be presented to a user:
        crm_standby not available, check your installation
This update re-includes the "crm_master" in the packemaker package, and adapts the crm utility not to require the "crm_standby" and "crm_failcount" scripts, so that the above error message is no longer displayed.
In a cluster environment managed by both Pacemaker and the CMAN cluster management subsystem, frequent leaving and joining of a node could cause Pacemaker's quorum view to be incorrect. This update applies a patch that addresses this issue, so that the leaving and joining of a node no longer causes Pacemaker's quorum view to be different from CMAN's.
Previously, rebooting a node in a CMAN managed cluster could cause the fencing daemon to keep the "fenced:default" CPG group on the remaining nodes, leaving the cluster in an inconsistent state. With this update, an upstream patch has been applied to address this issue. As a result, when a node is rebooted and leaves a cluster, the cluster resources correctly run on remaining nodes.
When using the fence_ipmilan fencing agent, Pacemaker now accepts "diag" as a valid per-device stonith action. With this action enabled, a fenced node receives the "DIAG" signal and creates a dump for diagnostic purposes.
Note that Pacemaker provides the following functionality, and is now the preferred application to perform these tasks:
Pacemaker provides support for a time-based resource control. This allows system administrators to define the time a resource is down.
Pacemaker supports time-based resource control. This allows system administrators to define the downtime of individual resources.
Pacemaker allows users to manually start or stop cluster resources. This enables system administrators to perform maintenance tasks on individual components within a service.
All users of pacemaker are advised to upgrade to these updated packages, which fix these and other bugs, and add this enhancement. Note that pacemaker is considered a Technology Preview in Red Hat Enterprise Linux 6.