I need to access a postgresql database from a remote machine on a VPS at DigitalOcean running 12.10 and postgresql 9.1.
How do I do this? I noticed port 5432 is closed, how do I open this?
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To open the port 5432 edit your
/etc/postgresql/9.1/main/postgresql.conf and change
and restart your DBMS
invoke-rc.d postgresql restart
now you can connect with
$ psql -h hostname -U username -d database
if you are unable to authentify yourself, then you need to give your user access rights to your database
host all all all md5
(This is for a wide open access. For stricter control, consult the pg_hba.conf documentation and adjust according to your needs).
Hereafter you need also a reload
invoke-rc.d postgresql reload
I don't need to mention that this is a basic configuration, now you should think about modify your firewall and improve the security of your DBMS.
This does not work anymore, if it ever did :
host all all * md5
The correct possible lines for this are :
host all all 0.0.0.0/0 md5 #ipv4 range
host all all ::0/0 md5 #ipv6 range
host all all all md5 #all ip
The highest-voted and accepted answer has serious security-impolications. This method is disabled by default for good reasons.
Better use local port forwarding with
ssh -L local_port:localhost:foreign_port user@server
Start the port forwarding:
ssh -L 5432:localhost:5432 firstname.lastname@example.org #or ssh -L 5432:127.0.0.1:5432 email@example.com
(Change local and foreign ports to fit your configuration).
Then you can directly connect to the database from your local computer:
psql -U db_user -p local_port -l
Following configuration, you need to set:
# Connection Settings - listen_addresses = '*' # what IP address(es) to listen on;
# IPv4 local connections: host all all 0.0.0.0/0 md5
Restart your server:
sudo /etc/init.d/postgresql restart