[ClusterLabs] Parallel adding of resources

Arjun Pandey apandepublic at gmail.com
Fri Jan 8 01:34:01 EST 2016


I am running a 2 node cluster with this config on centos 6.6

Master/Slave Set: foo-master [foo]
Masters: [ messi ]
Stopped: [ronaldo ]
 eth1-CP        (ocf::pw:IPaddr):       Started messi
 eth2-UP        (ocf::pw:IPaddr):       Started messi
 eth3-UPCP      (ocf::pw:IPaddr):       Started messi

where i have a multi-state resource foo being run in master/slave mode
and  IPaddr RA is just modified IPAddr2 RA. Additionally i have a
collocation constraint for the IP addr to be collocated with the master.

Now there are cases where i have multiple virtual IP's ( around 20 )
and for failover time gets substantially increased in these cases.
Based on the logs what i have observed is the IPaddr resources are
moved sequentially. Is this really the case ? Also is it possible to
specify that they can be added simultaneously, since none of them have
any sort of corelation with the other ?

If it's sequential what is the reason behind it ?

Thanks in advance.


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