Following command can be used to modify the resource property in Pacemaker cluster.
# pcs resource update
[resource options] [op [ ]...] [meta ...] [--wait[=n]]
For example, following command can be used to modify the IP address of a VIP resource.
# pcs resource update VIP_B ip=192.168.122.111
When a resource is modified the resource will be stopped and then started. This could cause any constraints or dependencies (if part of a group) to be stopped first.
If the resource is part of a Master/Slave resource then the resource will be demoted on all nodes and then a Master(s) will be prompted. In both instances, this will cause a momentary outage.