You can use these credentials to authenticate the following nodes:
  • Postgres
  • Agent
  • Postgres Chat Memory
  • PGVector Vector Store
The Agent node doesn’t support SSH tunnels.

​
Prerequisites

Create a user account on a Postgres server.

​
Supported authentication methods

  • Database connection
Refer to Postgres’s documentation for more information about the service.

​
Using database connection

To configure this credential, you’ll need:
  • The Host or domain name for the server.
  • The Database name.
  • A User name.
  • A user Password.
  • Ignore SSL Issues: Set whether the credential connects if SSL validation fails.
  • SSL: Choose whether to use SSL in your connection.
  • The Port number to use for the connection.
  • SSH Tunnel: Choose if you want to use SSH to encrypt the network connection with the Postgres server.
To set up the database connection:
  1. Enter the Host or domain name for the Postgres server. You can either run the /conninfo command to confirm the host name or run this query: 
    SELECT inet_server_addr();
  2. Enter the Database name. Run the /conninfo command to confirm the database name.
  3. Enter the User name of the user you wish to connect as.
  4. Enter the user’s Password.
  5. Ignore SSL Issues: If you turn this on, the credential will connect even if SSL validation fails.
  6. SSL: Choose whether to use SSL in your connection. Refer to Postgres SSL Support for more information. Options include:
    • Allow: Sets the ssl-mode parameter to allow. First try a non-SSL connection; if that fails, try an SSL connection.
    • Disable: Sets the ssl-mode parameter to disable. Only try a non-SSL connection.
    • Require: Sets the ssl-mode parameter to require. Only try an SSL connection. If a root CA file is present, verify that a trusted certificate authority (CA) issued the server certificate.
  7. Enter the Port number to use for the connection. You can either run the /conninfo command to confirm the host name or run this query: 
    SELECT inet_server_port();
  8. SSH Tunnel: Turn this setting on to connect to the database over SSH. Refer to SSH tunnel limitations for some guidance around using SSH. Once turned on, you’ll need:
    1. Select SSH Authenticate with to set the SSH Tunnel type to build:
      • Select Password if you want to connect to SSH using a password.
      • Select Private Key if you want to connect to SSH using an identity file (private key) and a passphrase.
    2. Enter the remote bind address you’re connecting to as the SSH Host.
    3. SSH Port: Enter the local port number for the SSH tunnel.
    4. SSH Postgres Port: Enter the remote end of the tunnel, the port number the database server is using.
    5. SSH User: Enter the username to log in as.
    6. If you selected Password for SSH Authenticate with, add the user’s SSH Password.
    7. If you selected Private Key for SSH Authenticate with:
      1. Add the contents of the Private Key or identity file used for SSH.
      2. If the Private Key was created with a passphrase, enter that Passphrase. If the Private Key has no passphrase, leave this field blank.
Refer to Secure TCP/IP Connections with SSH Tunnels for more information.

​
SSH tunnel limitations

Only use the SSH Tunnel setting if:
  • You’re using the credential with the Postgres node (Agent node doesn’t support SSH tunnels).
  • You have an SSH server running on the same machine as the Postgres server.
  • You have a user account that can log in using ssh.