manage storage hosts

docs-2.0/4.deployment-and-installation/manage-storage-host.md

@@ -0,0 +1,23 @@
+# Manage Storage hosts
+
+Starting from Nebula Graph 3.0.0, setting Storage hosts in the configuration files only registers the hosts on the Meta side, but does not add them into the cluster. You must run the `ADD HOSTS` statement to add the Storage hosts.
+
+## Add Storage hosts
+
+Add the Storage hosts to a Nebula Graph cluster.
+
+```ngql
+ADD HOSTS <ip>:<port> [,<ip>:<port> ...];
+```
+
+## Drop Storage hosts
+
+Delete the Storage hosts from cluster.
+
+!!! note
+
+    You can not delete an in-use Storage host directly. Delete the associated graph space before deleting the Storage host.
+
+```ngql
+DROP HOSTS <ip>:<port> [,<ip>:<port> ...];
+```

mkdocs.yml

@@ -307,6 +307,7 @@ nav:
       - Deploy license: 4.deployment-and-installation/deploy-license.md
       - Manage Service: 4.deployment-and-installation/manage-service.md
       - Connect to Service: 4.deployment-and-installation/connect-to-nebula-graph.md
+      - Manage Storage host: 4.deployment-and-installation/manage-storage-host.md
 #      - Manage zone: 4.deployment-and-installation/5.zone.md
       - Upgrade:
           - Upgrade Nebula Graph to the current version: 4.deployment-and-installation/3.upgrade-nebula-graph/upgrade-nebula-graph-to-latest.md