On 2021-07-20 6:04 p.m., john tillman wrote: > Greetings, > > Is it possible to configure a two node cluster (pacemaker 2.0) without > fencing and avoid split brain?
No. > I was hoping there was a way to use a 3rd node's ip address, like from a > network switch, as a tie breaker to provide quorum. A simple successful > ping would do it. Quorum is a different concept and doesn't remove the need for fencing. > I realize that this 'ping' approach is not the bullet proof solution that > fencing would provide. However, it may be an improvement over two nodes > alone. It would be, at best, a false sense of security. > Is there a configuration like that already? Any other ideas? > > Pointers to useful documents/discussions on avoiding split brain with two > node clusters would be welcome. https://www.alteeve.com/w/The_2-Node_Myth (note: currently throwing a cert error related to the let's encrypt issue, should be cleared up soon). -- Digimer Papers and Projects: https://alteeve.com/w/ "I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops." - Stephen Jay Gould _______________________________________________ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/