mypostgresql:
    services:
        postgresql:
            charm: cs:trusty/postgresql-3
            constraints: mem=2048
            options:
                extra-packages: python-apt postgresql-contrib postgresql-.*-debversion
                max_connections: 500

        postgresql-psql:
            charm: cs:trusty/postgresql-psql

    relations:
        - ["postgresql:db-admin", "postgresql-psql:db-admin"]