NetWorker: Postgres does not start after installing the NMC package on a Linux server

• The NetWorker Management Console (NMC) server is installed on a Linux platform
• Postgres does not start after installing the NMC package
• Error from  /opt/lgtonmc/logs/install.log

ERROR: Command /opt/lgtonmc/bin/gstdbinit -U postgres -n 5432 /nsr/nmc/nmcdb failed!

• Error from the /opt/lgtonmc/logs/gstd.raw
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gstd NSR notice Internal error: could not create database process.
gstd NSR notice Internal error: could not release database handle.
gstd NSR notice Internal error: could not stop database process.
gstd NSR notice FATAL ERROR: could not stop database process
gstd NSR notice Internal error: could not stop database process.
gstd NSR notice Internal error: could not stop database process.
gstd NSR notice The most recently called subfunction returned error 2.
gstd NSR warning 2 %s 1 0 27 library error 22 os error 0

• Error from the /nsr/nmc/nmcdb/pgdata/db_output.log

FATAL:  could not create lock file "/tmp/.s.PGSQL.5432.lock": Permission denied

The permissions of /tmp were changed from 777 to something less open; for example, 755.  

When Postgres starts it creates a lock file under /tmp, as a postgres user. The current permission on /tmp does not allow the lock file to be created.

1. Change the permission of /tmp to 777: chmod 777 /tmp
2. Run the NMC configuration script: /opt/lgtonmc/bin/nmc_config