[Pacemaker] CMAN with multiple networks for HA communication

[Teerapatr Kittiratanachai]

Dear List,

According to CMAN identify each node in cluster by hostname.
So I configure the IP address in /etc/hosts file as below.

...
172.16.7.1    node00.example.com
172.16.7.2    node01.example.com
...

So the corosync member show as below

[root at node00 ~]# corosync-objctl | grep member
runtime.totem.pg.mrp.srp.members.2.ip=r(0) ip(172.16.7.2)
runtime.totem.pg.mrp.srp.members.2.join_count=1
runtime.totem.pg.mrp.srp.members.2.status=joined
runtime.totem.pg.mrp.srp.members.1.ip=r(0) ip(172.16.7.1)
runtime.totem.pg.mrp.srp.members.1.join_count=1
runtime.totem.pg.mrp.srp.members.1.status=joined

My question is, is it possible to add more than one network for the HA
communicate between these nodes?
e.g. if 172.16.7.0/30 is down. And another network, which be main
access network, still be up. the HA will use UP network to talk
instead of the down one.

Thank you in advance.

Regards,
Teerapatr Kittiratanachai (Te)