...

The system needs to access the following, commonly guarded (encrypted) folders: 

• /var/lib/pgsql

• /var/lib/pgsql/data

...

Access to GuardPoints

The resource is relative to the GuardPoint. In other words, if the GuardPoint is /var/lib/pgsql, and you want to allow access to a particular file in that directory, you would only need to specify that specific file in your resource parameter.

...

The resources that the pgsql startup script will need access are:

• /pg_log  
• /PG_VERSION
• /base  
• /postmaster.pid

The following image shows the files that should be included in the Resource Set, specifically for Postgres:

...