So, I began the other week for the first time setting up
pacemaker/corosync for a two-node cluster.
While I thought I had the iptables rule(s) correct to allow pacemaker to
work properly, I seem to have uh, not gotten it right - and thigns
misbehaved badly.
The good news is, that I figured out my iptables rules were getting in
the way. The bad news is, I am a bit of a newbie when it comes to how
to properly specify rule(s) to allow the multicast traffic required?
My two-node cluster is based mostly on the ever-so-pupular "Clusters
from scratch" document. The key section from my corosync.conf file
looks like this:
interface {
ringnumber: 0
bindnetaddr: 141.106.221.0
mcastaddr: 226.94.1.1
mcastport: 4000
}
Given that example--- can anyone assist with the proper iptables
rule(s) to ensure corosync doesn't get interfered with?
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