[LU-8458] Pacemaker script to monitor Lustre servers status

• Type: New Feature
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Labels: pacemaker
• Assignee: Gabriele Paciucci (Inactive)
• Reporter: Gabriele Paciucci (Inactive)

Description

A new script to be used in Pacemaker to monitor the Lustre Servers status compatible with ZFS and LDISKFS based Lustre server installations.

This RA is able to monitor a Lustre Server using the Pacemaker's clone technology.

pcs resource create [Resource Name] ocf:pacemaker:healthLUSTRE \
dampen=[seconds 5s] \
--clone 

where:

• dampen The time to wait (dampening) further changes occur

This script should be located in /usr/lib/ocf/resource.d/heartbeat/ of both the Lustre servers with permission 755.

Default values:

• dampen 5s

Default timeout:

• start timeout 60s
• stop timeout 20s
• monitor timeout 60s interval 10s

Compatible and tested:

• pacemaker 1.1.13
• corosync 2.3.4
• pcs 0.9.143
• RHEL/CentOS 7.2

Example of procedure to configure:

pcs resource create healthLUSTRE ocf:pacemaker:healthLUSTRE dampen=5s  --clone 

targets=`crm_mon -1|grep 'OST'| awk '{print $1}'` 

for i in $targets; do pcs constraint location $i rule score=-INFINITY lustred lt 1 or not_defined lustred; done 

Issue Links

• is blocking: LU-9168 Add pacemaker resources to lustre rpms
• is duplicated by: LU-8455 Pacemaker script for Lustre and ZFS