I have RHEL5.3 that is with the Platform Cluster Manger PCM installation. on master node. Unfortunately some files were deleted from the /var directory and then the postgresql service couldn't start. I have deleted, rm -rf /var/lib/pgsql/data and started the service again now the service is running but I cannot run some administrative commands including cluster tasks (which are very important).
for example
[root@pmd02 ~]# addhost
KusuDB: Operational Error occurred when connecting to the DB
Most likely cause: insufficient permissions for user=nobody
FATAL: Ident authentication failed for user "nobody"
ERROR: Database query failed! Make sure the database is available
How can I get rid of this error. I cannot afford reinstallation of PCM as many applications are running on the master node.