On 12/09/17 19:38, Ken Gaillot wrote: > On Mon, 2017-09-11 at 23:38 +0100, J Martin Rushton wrote: >> I've had it switched off over the last week whilst I've been trying to >> sort this out, but forgot tonight. It must be the combination of >> setting multicast_querier and stopping the firewall that is needed. I > > FYI this should open the requisite ports: > > firewall-cmd --permanent --add-service=high-availability > firewall-cmd --reload > Thanks for that. I've always used the GUI in CentOS 7, though I had been frustrated not being able to find corosync there. High availability was checked on in the GUI, so I went ahead and tried things - failure. I then slapped my head and ran your commands on the VMS, restarted and success.
Regards, Martin
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