[root@ec2-50-17-228-94 ~]# service postgresql start
Starting postgresql service:                               [FAILED]
[root@ec2-50-17-228-94 ~]# tail /var/lib/pgsql/pgstartup.log
WARNING:  could not create listen socket for "cobbler.acadaca.net"
FATAL:  could not create any TCP/IP sockets
LOG:  could not bind IPv4 socket: Cannot assign requested address
HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
WARNING:  could not create listen socket for "cobbler.acadaca.net"
FATAL:  could not create any TCP/IP sockets
LOG:  could not bind IPv4 socket: Cannot assign requested address
HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
WARNING:  could not create listen socket for "50.17.228.94"
FATAL:  could not create any TCP/IP sockets