[Pacemaker] addendum: "problems with node membership"

[Thomas]

p.s. "1 cluster nodes failed to respond to the join offer" can be found in my
corosync log. Google was of no use with that message, I haven't found a solution
yet. Cannot be that difficult I think, I just need the "freshly installed"
condition of pacemaker without reinstalling the complete package, because a
"fresh" node joins without problems...how can this be done?