Manage PostgreSQL database remotely with Navicat - postgresql

Question

I installed PostgreSQL on my server today and quickly took notes. I hope that I have compiled the answers I found for my question beautifully for you.

Answer 1

UPDATE PG_HBA.CONF
If you are using an ubuntu distribution, the file path should be this way.
I use the 10 version and use the ubuntu distribution. This path may differ depending on your operating system. Find this file on your system. etc/postgressql/10/main/pg_hba.conf Using nano, you can open it directly with the command.
nano etc/postgresql/10/main/pg_hba.conf
here are two settings we need to make.
# "local" is for Unix domain socket connections only
local all all md5
# Remote connections for navicat
host samerole all 0.0.0.0/0 md5
don't touch the others, should look like this in its final form.
# Database administrative login by Unix domain socket
local all postgres peer
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all md5
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
local replication all peer
host replication all 127.0.0.1/32 md5
host replication all ::1/128 md5
# Remote connections for navicat
host samerole all 0.0.0.0/0 md5
UPDATE POSTGRESQL.CONF
Open this file with nano, find the line below and update it as follows.
nano etc/postgresql/10/main/postgresql.conf
listen_addresses = 'localhost'
change it
listen_adresses = '*'
The settings required for the translate remote connection to work are only related to these two settings. But if your system has a Firewall, we need to whitelist the ports for PostgreSQL like UFW. Let's do this when we say it.
$ sudo ufw status
When you check the firewall status, if it is active, you will see an output like this. If disabled, inactive appears.
To Action From
-- ------ ----
22/tcp ALLOW Anywhere
5432/tcp ALLOW Anywhere
22/tcp (v6) ALLOW Anywhere (v6)
5432/tcp (v6) ALLOW Anywhere (v6)
This place is very important! Make sure you have ssh permission when activating UFW. I will always let this habit. If you do not do this, you need to login to the system with root and interfere with ufw settings. you kind of lock yourself up :)
Let's continue with UFW permissions.
$ sudo ufw allow ssh
$ sudo ufw allow 5432/tcp
We also gave the necessary permissions. Let's do one more check. Let's make sure our PostgreSQL password is default postgres. Because it's a nonsense by the way. Let's secure our business. Time is cash.
CHECKING THE DEFAULT USERNAME AND PASSWORD (postgres, postgres, postgres)
$ sudo -u postgres psql
\password postgres
\q
just restart the postgres service.
$ sudo service postgresql restart
NOW WE START THE NAVICAT SETTINGS
Open your Navicat application and create a new connection that selects the PostreSQL connection from the new connection tab.
Two setting steps are waiting for you in the connection you created. General and SSH settings.
I enter my default PostgreSQL information in General settings. Just like in the picture.
Connection Name: Your Connection Name
Host: localhost
Port: 5432
Initial Database: postgres
User Name: postgres
Password: postgres
postgres is default database, username and password !
Let's set the SSH connection settings as follows.
Host: your droplet IP
Port: 22 is defeault SSH port
User Name: root (default root login)
Authentication Method: Public Key
Private Key: /Users/username/.ssh/id_rsa
Passphrase: your passhrase
If we have made our settings for Navicat, we can now test our connection. Click the Test Connection button and see if we connect.
Congratulations !!!