RHBA-2017:2587 - Bug Fix Advisory

Topic

Updated pacemaker packages that fix several bugs are now available for Red Hat Enterprise Linux 7.

Description

The Pacemaker cluster resource manager is a collection of technologies working together to provide data integrity and the ability to maintain application availability in the event of a failure.

This update fixes the following bugs:

• Prior to this update, the Pacemaker service dropped its connection to the Cluster Information Base (CIB) when a large number of configuration updates arrived at once. This was the case, for example, when cleaning up all resources simultaneously in large clusters. As a consequence, the node was fenced in certain cases. With this update, the cluster-ipc-limit cluster property, has been added. The property controls the time the Pacemaker service has to process configuration updates. The recommended value for large clusters is the number of nodes times the number of resources. With the property appropriately set, the described problem no longer occurs. (BZ#1478298)
• Prior to this update, Pacemaker did not correctly implement ordering constraints involving resources of the new "bundle" type. As a consequence, ordering constraints which included one or more "bundle" resources had no effect. With this update, the implementation has been improved, and the described problem no longer occurs. Note that the "bundle" type is a technology preview feature. (BZ#1481139)
• Previously, quorum loss did not trigger Pacemaker to recheck resource placement. As a consequence, in certain situations Pacemaker required a long time, up to the cluster recheck interval, before stopping resources after quorum loss. This happened only when several conditions were met: a node that was correctly shutting down dropped the cluster below the quorum; that node was not running any resources at the time; and a cluster transition was already in progress. With this update, Pacemaker always cancels the current transition when quorum is lost and recalculates resource placement immediately. As a result, the long delay no longer occurs. (BZ#1481140)
• Previously, if a fencing device configured with the pcmk_delay_max setting was disabled while a fencing action was being delayed, Pacemaker's stonithd service attempted to free memory used for the action twice. As a consequence, Pacemaker terminated unexpectedly. With this update, stonithd has been fixed to free the memory only once, and as a result, the described problem no longer occurs. (BZ#1481141)
• Previously, Pacemaker's stonithd service used an incorrect search pattern when checking the configuration for re-enabled fence devices. Consequently, re-enabled fence devices were shown to be available only on the node where they had been started. With this update, stonithd now uses the correct search pattern, and the described problem no longer occurs. (BZ#1481142)
• Prior to this update, the crm_report utility terminated with a fatal error if the user disabled searching for logs using the --sos-mode option without specifying any log files. Consequently, the sosreport tool was unable to collect any cluster log file. With this update, crm_report now correctly collects non-log information if no logs are found or specified, and the described problem no longer occurs. (BZ#1482852)

Users of pacemaker are advised to upgrade to these updated packages, which fix these bugs.

Solution

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

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux High Availability for x86_64 7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux Resilient Storage for IBM z Systems 7 s390x
• Red Hat Enterprise Linux High Availability for IBM z Systems 7 s390x
• Red Hat Enterprise Linux Resilient Storage for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.6 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.5 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.4 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.7 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.6 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.5 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.4 ppc64le
• Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 7.7 ppc64le
• Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 7.6 ppc64le
• Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 7.4 ppc64le
• Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 7.7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 7.4 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux High Availability for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le

Fixes

• BZ - 1481139 - Ordering constraints involving bundles don't work [rhel-7.4.z]
• BZ - 1481140 - [GANESHA] pcs status shows all nodes in started state for ~15 mins even when hit "partition WITHOUT quorum" with IO's still resuming [rhel-7.4.z]
• BZ - 1481141 - disabling a fencing-device that has queued actions leads to stonithd receiving SIGABRT [rhel-7.4.z]
• BZ - 1481142 - fencing-device not properly registered after disable/enable cycle [rhel-7.4.z]
• BZ - 1482852 - crm_report no longer collects anything for sosreport [rhel-7.4.z]

CVEs

(none)

References

(none)