corosync does not run with a realtime scheduling priority in a RHEL 7 High Availability cluster
Issue
corosync
ran with theSCHED_RR
realtime scheduling policy in RHEL 6, but now runs with theSCHED_OTHER
policy using a nice value of 20.- My cluster nodes are experiencing frequent fencing or "processor failures" in the cluster whenever there is a minor amount of load placed on the nodes
- Cluster nodes are being fenced frequently
Environment
- Red Hat Enterprise Linux (RHEL) 7 with the High Availability Add On
corosync
releases prior to2.3.4-4.el7_1.3
- On those releases,
COROSYNC_OPTIONS
in/etc/sysconfig/corosync
does not include-r
- On those releases,
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