Hi All,
I'm running Pacemaker on Centos7
Name : pcs
Version : 0.9.169
Release : 3.el7.centos.3
Architecture: x86_64
I'm performing some cluster failover tests in a 3 node cluster. We have 3
resources in the cluster.
I was trying to see if I could get it working if 2 nodes fail at different
times. I'd like the 3 resources to then run on one node.
The quorum options I've configured are as follows
[root@node1 ~]# pcs quorum config
Options:
auto_tie_breaker: 1
last_man_standing: 1
last_man_standing_window: 10000
wait_for_all: 1
[root@node1 ~]# pcs quorum status
Quorum information
------------------
Date: Wed Aug 30 11:20:04 2023
Quorum provider: corosync_votequorum
Nodes: 3
Node ID: 1
Ring ID: 1/1538
Quorate: Yes
Votequorum information
----------------------
Expected votes: 3
Highest expected: 3
Total votes: 3
Quorum: 2
Flags: Quorate WaitForAll LastManStanding AutoTieBreaker
Membership information
----------------------
Nodeid Votes Qdevice Name
1 1 NR node1 (local)
2 1 NR node2
3 1 NR node3
If I stop the cluster services on node 2 and 3, the groups all failover to
node 1 since it is the node with the lowest ID
But if I stop them on node1 and node 2 or node1 and node3, the cluster
fails.
I tried adding this line to corosync.conf and I could then bring down the
services on node 1 and 2 or node 2 and 3 but if I left node 2 until last,
the cluster failed
auto_tie_breaker_node: 1 3
This line had the same outcome as using 1 3
auto_tie_breaker_node: 1 2 3
So I'd like it to failover when any combination of two nodes fail but I've
only had success when the middle node isn't last.
Thanks
David
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