If you want to use Navicat manage your PostgreSQL, open the remote connect is necessary:

    1. Modify the /data/pgsql/pg_hba.conf

    2. Add a line to pg_hba.conf

      1. host   all             all             0.0.0.0/0               md5

    3. Modify the /data/pgsql/postgresql.conf

    #listen_addresses = 'localhost'    
listen_addresses = '*'
    1. Restart the PostgreSQL
      systemctl restart postgresql-11.service