Reducing downtime on starting replication (#58362)

pallsama · sunbrye · web-flow · commit 4ae36508ff65 · 2025-12-16T19:36:18.000Z
Co-authored-by: Sunbrye Ly &lt;56200261+sunbrye@users.noreply.github.com&gt;
diff --git a/data/reusables/enterprise_installation/replication-command.md b/data/reusables/enterprise_installation/replication-command.md
@@ -6,3 +6,4 @@
 
    > [!WARNING]
    > `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.
+   > If you are running version 3.14.20, 3.15.15, 3.16.11, 3.17.8, 3.18.2, or a later version including future releases like 3.19, you no longer need to put the primary in maintenance mode prior to running `ghe-repl-start`. This command is no longer expected to cause an outage on the primary server. However, when setting up a new replica, `ghe-repl-start` won't cause an outage as long as you run `ghe-config-apply` between `ghe-repl-setup` and `ghe-repl-start`. Skipping `ghe-config-apply` and going straight from `ghe-repl-setup` to `ghe-repl-start` will still result in an outage.

Original file line number	Diff line number	Diff line change
`@@ -6,3 +6,4 @@`
`6`	`6`
`7`	`7`	`> [!WARNING]`
`8`	`8`	> `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.
	`9`	+ > If you are running version 3.14.20, 3.15.15, 3.16.11, 3.17.8, 3.18.2, or a later version including future releases like 3.19, you no longer need to put the primary in maintenance mode prior to running `ghe-repl-start`. This command is no longer expected to cause an outage on the primary server. However, when setting up a new replica, `ghe-repl-start` won't cause an outage as long as you run `ghe-config-apply` between `ghe-repl-setup` and `ghe-repl-start`. Skipping `ghe-config-apply` and going straight from `ghe-repl-setup` to `ghe-repl-start` will still result in an outage.