[Pacemaker] Online and Offline status when doing crm_mon

Mike A Meyer Tue, 05 Oct 2010 13:16:21 -0700

We are setup in a two node active/passive cluster using pacemaker/corosync. We shutdown the pacemaker/corosync on both nodes and changed the uname -n on our nodes to show the short name instead of the FQDN. Started up pacemaker/corosync and ever since we done that, when we run the crm_mon command, we see this below.

============
Last updated: Tue Oct 5 13:28:16 2010
Stack: openais
Current DC: e-magdb2 - partition with quorum
Version: 1.0.9-89bd754939df5150de7cd76835f98fe90851b677
4 Nodes configured, 2 expected votes
2 Resources configured.
============

Online: [ e-magdb2 e-magdb1 ]
OFFLINE: [ e-magdb1.testingpcmk.com e-magdb2.testingpcmkr.com ]

We did edit the crm configuration file to use short names for both nodes. We can ping both the short name and the FQDN on our internal network and both come back with the right IP address. We are running on RHEL 5. Anybody have any ideas why the FQDN shows offline since this change since we configured pacemaker/corosync to use short names? Is it grabbing it from internal DNS from the IP address we have in the /etc/corosync.conf file? Everything seems to be working correctly and failing over correctly. Should this be something to worry about though or is it a display bug maybe? Below is the corosync.conf file.

# Please read the corosync.conf.5 manual page
compatibility: whitetank

totem {
version: 2
secauth: off
threads: 0
interface {
ringnumber: 0
bindnetaddr: 172.26.5.167
mcastaddr: 226.94.5.1
mcastport: 5405
}
}

logging {
fileline: off
to_stderr: no
to_logfile: yes
to_syslog: yes
logfile: /var/log/cluster/corosync.log
debug: off
timestamp: on
logger_subsys {
subsys: AMF
debug: off
}
}

amf {
mode: disabled
}

Thanks,
Mike

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[Pacemaker] Online and Offline status when doing crm_mon

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