Phppgadmin gives login failed
When phppgadmin gives login failed the likely cause is pg_hba.conf needs a configuration change.
Check the file /var/lib/pgsql/data/pg_hba.conf for the following two lines:
local all all md5 host all all 127.0.0.1 255.255.255.255 md5
If they are not in, add them in then restart postgresql with /scripts/restartsrv_postgres