data/reusables/enterprise_installation/replication-command.md

1. To start replication of the datastores, use the ghe-repl-start command.

   ghe-repl-start
   

   ghe-repl-start causes a brief outage on the primary server, during which users may see internal server errors. To provide a friendlier message, run ghe-maintenance -s on the primary node before running ghe-repl-start on the replica node to put the appliance in maintenance mode. Once replication starts, disable maintenance mode with ghe-maintenance -u. Git replication will not progress while the primary node is in maintenance mode.