manage storage hosts

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

@@ -0,0 +1,23 @@
+# Manage Storage host
+
+From Nebula Graph version 3.0.0, the Storage hosts added in the configuration files **CANNOT** be read or written directly. The configuration files only register the Storage hosts into the Meta services. You must run the `ADD HOSTS` command to read and write data on Storage hosts.
+
+## Add Storage host
+
+Add the Storage hosts to a Nebula Graph cluster.
+
+```ngql
+ADD HOSTS <ip>:<port> [,<ip>:<port> ...];
+```
+
+## Drop Storage host
+
+Delete the Storage hosts from cluster.
+
+!!! note
+
+    You can not delete an in-use Storage hoste directly. You need to 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