This is an old revision of the document!
nodeN# apt install corosync
nodeN# cat /etc/corosync/corosync.conf
... bindnetaddr: 10.5.N.0 ... mcastaddr: 239.255.1.X ...
nodeN# service corosync restart
nodeN# corosync-cmapctl | grep members nodeN# tail /var/log/syslog