RHBA-2011:1669 - Bug Fix Advisory

Topic

Updated pacemaker packages that fix several bugs and add various enhancements
are now available for Red Hat Enterprise Linux 6.

Description

The Pacemaker Cluster Resource Manager provides the ability to create and manage
high-availability server applications in the event of system downtime.

The pacemaker packages have been upgraded to upstream version 1.1.6, which
provides a number of bug fixes and enhancements over the previous version. In
particular, this update fixes the following bugs:

• Prior to this update, when the pacemaker daemon did not have permission to

write to the /var/log/cluster/corosync.log file, it wrote the following error to
the system log:

attrd: Cannot append to /var/log/cluster/corosync.log: Permission denied

This update applies a patch to ensure that when such an error occurs, Pacemaker
logs this problem on startup and no longer tries to access this file.
(BZ#708722)

• When using the CRM command line interface, running the "configure",

"template", and "list" commands in this particular order caused the crm process
to terminate unexpectedly with the following error:

NameError: global name 'listconfigs' is not defined

With this update, the underlying source code has been modified to address this
issue so that CRM no longer crashes. (BZ#720136)

• Under certain circumstances, an attempt to fence a node may have caused

Pacemaker to stop responding when accessing the /var/run/cluster/fenced_override
file. With this update, this error no longer occurs, and Pacemaker now works as
expected in this scenario. (BZ#743175)

• Prior to this update, an error in the interaction between Pacemaker and CMAN's

fencing subsystem prevented reliable fencing operation. This update applies a
patch that corrects this error so that such fencing operations are now reliable.
(BZ#745526)

• In the previous version of the crm(8) manual page, the EXAMPLES section

incorrectly listed several example commands on a single line. This made it
particularly difficult for a reader to distinguish these commands. This update
introduces a new, completely rewritten manual page, which lists each example
command on a separate line. (BZ#708797)

All users who want to use the pacemaker Technology Preview should upgrade to
these updated packages, which provide numerous bug fixes and enhancements.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 6 i386
• Red Hat Enterprise Linux Resilient Storage for x86_64 6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 6 i386
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux High Availability (for RHEL Server) from RHUI 6 x86_64
• Red Hat Enterprise Linux High Availability (for RHEL Server) from RHUI 6 i386
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI 6 x86_64
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386

Fixes

• BZ - 708722 - log permission errors starting pacemaker
• BZ - 708797 - 'man crm's examples aren't line-wrapped
• BZ - 720136 - Crash in crm > configure > template > list
• BZ - 743175 - Pacemaker blocks indefinitely when accessing /var/run/cluster/fenced_override
• BZ - 745526 - pacemaker+cman fencing is unreliable

CVEs

(none)

References

(none)