The cluster will report an error as ADMIN_WAIT status for the rebooted node.
This is caused by ServerA as it fired the command "hastop -local" before ServerB rebooted, but one or more resources fails to offline and get hung. This causes the ServerA to report "LEAVING" state
Owing to this issue, VCS will report ADMIN_WAIT status for node ServerB, after it is rebooted.
Run the following commands step by step to resolve the issue
1) Run the following command on ServerA ( for which the VCS state is "Leaving" ).
# hastop -local -force
2) Run the following command on ServerB ((for which the VCS state is "admin_wait" ).
# hastop -local
3) Run the following command on both nodes.
# hastart
# hastatus -sum