On Sun, Jun 9, 2024 at 10:50 AM Patrick Lomakin <patrick.lomakin@gmail.com> wrote:

Hey, everybody. I have 3 hosts on which Gluster replica 3 volume called “engine” is deployed. When I try to put 2 of the 3 hosts into maintenance mode, my deployment crashes. I originally expected that with replica 3 I could shut down 2 of the hosts and everything would work. However, I saw that the default for Gluster is quorum server not allowing more than one host to be disabled. But even after disabling the quorum and verifying that the Gluster disk is available with one host enabled, Hosted Engine still does not access the storage. Who can explain me then the point of using replica 3 if I can't disable 2 hosts and is there any way to fix this behavior? _______________________________________________

Hello, Using Gluster with one of 3 hosts will most likely trigger a split brain situation. Don't do it. If I needed to shutdown two hosts to do some critical maintenance, I'd simply backup the storage to a 3'rd party single host machine, and shutdown the cluster completely. - Gilboa

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