alert rules: remove some descriptions (#6223)

pingcap · Aug 26, 2021 · e5873bb · e5873bb
1 parent 229a070
commit e5873bb
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/alert-rules.md b/alert-rules.md
@@ -218,7 +218,7 @@ This section gives the alert rules for the PD component.
 
 * Description:
 
-    etcd writes data to disk at a lower speed than normal. It might lead to PD leader timeout or failure to store TSO on disk in time, which will shut down the service of the entire cluster.
+    If the latency of the fsync operation exceeds 1 second, it indicates that etcd writes data to disk at a lower speed than normal. It might lead to PD leader timeout or failure to store TSO on disk in time, which will shut down the service of the entire cluster.
 
 * Solution:
 
@@ -234,7 +234,7 @@ This section gives the alert rules for the PD component.
 
 * Description:
 
-    The number of Region replicas is smaller than the value of `max-replicas`. When a TiKV machine is down and its downtime exceeds `max-down-time`, it usually leads to missing replicas for some Regions during a period of time. When a TiKV node is made offline, it might result in a small number of Regions with missing replicas.
+    The number of Region replicas is smaller than the value of `max-replicas`. When a TiKV machine is down and its downtime exceeds `max-down-time`, it usually leads to missing replicas for some Regions during a period of time. 
 
 * Solution: