This call to crm with configure primitive allows us to associate an arbitrary IP address with our Pacemaker cluster. Once again, we follow the simple naming scheme and label our resource pg_vip. As we always require a resource agent, we need one that is designed to handle network interfaces. There are actually two that fit this role: IPaddr and IPaddr2. Though we can use either, the IPaddr2 agent is designed specifically for Linux hosts, so we might as well use it for maximum compatibility.
The minimum parameters (params) we need for this resource agent include the IP address (ip) and a label for network management (iflabel). We chose to set these to the IP address that we set aside earlier (192.168.56.50). We also chose a ...
