cPanel requires Postgresql 7.3.x or later. 7.2.x will not work.

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Step 1
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Upgrade to cPanel 7.4.0 build 45 or later
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Step 1a (If you do not have 7.2.x or earlier installed skip this step)
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Login to a root shell via ssh or the console.

If you have Postgres 7.2.x installed, backup your databases using pg_dumpall or some other method.

Move the postgres data directory somewhere else. ie

mv /var/lib/pgsql /var/lib/pgsql.old

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Step 2
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Login to a root shell via ssh or the console and run

/scripts/installpostgres

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Step 2a (skip this step if you are not upgrading from postgres 7.2 or earlier
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Restore your sql dump created with pg_dumpall or by some other method using psql or some other method
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Step 3
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Login to Web Host Manager and choose “Postgres Config” under Server Setup.

Set a postgres password to anything of your choosing. You should avoid using any non-alpha numeric charaters as these cause problems.
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Step 4
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Use the “Postgres Config” option in WHM to install a postgres pg_hba.conf file. You can skip this step if you would like to setup your pg_hba.conf file manually. cPanel should work fine with md5 passwords or plaintext passwords
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Step 5
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Login to cPanel and click on Postgres .. Enjoy!
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