After failing over to a GitHub Enterprise appliance, you should regain redundancy as soon as possible rather than rely on a single appliance.

You can use the former primary appliance as the new replica appliance if the failover was planned or was not related to the health of the appliance. If the failover was related to an issue with the primary appliance, you may prefer to create a new replica appliance. For more information, see "Creating a High Availability replica."

Configuring a former primary appliance as a new replica

  1. Connect to the former primary appliance's IP address using SSH:

    ssh -p 122 admin@FORMER PRIMARY IP

  2. On the former primary appliance, run ghe-repl-setup with the IP address of the former replica:

    ghe-repl-setup FORMER REPLICA IP

  3. To add the public key to the list of authorized keys on the primary appliance, browse to https://<PRIMARY HOSTNAME>/setup/settings and add the key you copied from the replica to the list.

  4. To verify the connection to the new primary and enable replica mode for the new replica, run ghe-repl-setup again.

    ghe-repl-setup FORMER REPLICA IP

  5. Use the ghe-repl-start command to start replication of the datastores:

    ghe-repl-start