打开postgresql的远程访问权限
External PostgreSQL connections

1. To be able to reach the server remotely you have to add the following line into the file: /var/lib/pgsql/data/postgresql.conf:

listen_addresses = '*'

2. PostgreSQL, by default, refuses all connections it receives from any remote address. You have to relax these rules by adding this line to /var/lib/pgsql/data/pg_hba.conf:

host all all  0.0.0.0/0 md5

This is an access control rule that lets anyone login from any address if a valid password is provided (the md5 keyword). You can use your network/mask instead of 0.0.0.0/0 to only allow access from certain IP addresses.

3. When you have applied these modifications to your configuration files, you will need to restart the PostgreSQL server.

/etc/init.d/postgresql start

Now, you will be able to login to your server remotely.