Update upgrade-tidb-using-tiup.md

hfxsd · web-flow · commit 955f7184bfb9 · 2026-05-25T15:35:44.000+08:00
diff --git a/upgrade-tidb-using-tiup.md b/upgrade-tidb-using-tiup.md
@@ -208,6 +208,7 @@ tiup cluster upgrade <cluster-name> v8.5.0
 > **Note:**
 >
 > + An online upgrade follows TiUP's fixed component upgrade order. Within each component type, instances are upgraded one by one in a rolling manner:
+>
 >     + **TiFlash**: TiFlash is always upgraded first. If the cluster contains TiFlash, TiUP performs a rolling upgrade of all TiFlash instances before proceeding to other components (such as PD, TiKV, and TiDB). Component types that are not deployed in the cluster are skipped.
 >     + **TiKV**: During the TiKV upgrade, TiUP evicts all Region leaders from a TiKV store through PD before stopping the instance. The default timeout for leader transfer is 5 minutes (300 seconds). If the timeout is reached, TiUP stops the instance directly without waiting for the leader eviction to complete.
 >

Original file line number	Diff line number	Diff line change
`@@ -208,6 +208,7 @@ tiup cluster upgrade <cluster-name> v8.5.0`
`208`	`208`	`> Note:`
`209`	`209`	`>`
`210`	`210`	`> + An online upgrade follows TiUP's fixed component upgrade order. Within each component type, instances are upgraded one by one in a rolling manner:`
	`211`	`+>`
`211`	`212`	`> + TiFlash: TiFlash is always upgraded first. If the cluster contains TiFlash, TiUP performs a rolling upgrade of all TiFlash instances before proceeding to other components (such as PD, TiKV, and TiDB). Component types that are not deployed in the cluster are skipped.`
`212`	`213`	`> + TiKV: During the TiKV upgrade, TiUP evicts all Region leaders from a TiKV store through PD before stopping the instance. The default timeout for leader transfer is 5 minutes (300 seconds). If the timeout is reached, TiUP stops the instance directly without waiting for the leader eviction to complete.`
`213`	`214`	`>`