[Pacemaker] ERROR: Unable to find nic or netmask.

[Sihan Goi]

Hi,

I'm trying to create a HA cluster with 2 CentOS 7 PCs connected to a
wireless AP. The PCs have the static IP addresses 192.168.0.111 and
192.168.0.112 respectively and hostnames node01 and node02 respectively.

I've tried to create a virtual IP address of 192.168.0.110 using the
following command:

pcs resource create virtual_ip ocf:heartbeat:IPaddr2 ip=192.168.0.110
cidr_netmask=32 op monitor interval=30s

However, when I do a "pcs status resources" I get the following output:

 virtual_ip    (ocf::heartbeat:IPaddr2):    Stopped

The virtual IP is stopped rather than started. I looked into
/var/log/messages and /var/log/pacemaker.log
 and I find the following error messages:

node02 IPaddr2(virtual_ip)[25451]: ERROR: Unable to find nic or netmask.
node02 IPaddr2(virtual_ip)[25451]: ERROR: [findif] failed

It seems that it's unable to find my nic. How can I fix this?

Thanks.
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