doc/ejabberd.md

@@ -1,11 +1,26 @@
 # ejabberd
 
-The kosmos.org XMPP service is running as an ejabberd cluster on [various
-machines][1]. JIDs are `username@kosmos.org`, with the service being configured
-in DNS to use `xmpp.kosmos.org` and MUC on `kosmos.chat`.
+The kosmos.org XMPP server is running on `andromeda.kosmos.org`. JIDs are
+username@kosmos.org, with the server being configured in DNS to use
+`xmpp.kosmos.org` and MUC on `chat.kosmos.org`.
 
 * [Configuring ejabberd](https://docs.ejabberd.im/admin/configuration)
 * [XEP compliance tester](https://compliance.conversations.im/server/kosmos.org/)
 * [ejabberdctl reference](https://docs.ejabberd.im/admin/guide/managing/#ejabberdctl-commands)
 
-[1]: https://wiki.kosmos.org/Infrastructure
+### Common ejabberdctl tasks
+
+(These things can also be done through a client that supports admin actions, or
+through the admin web interface.)
+
+## Create a user account
+
+    sudo /opt/ejabberd-18.06/bin/ejabberdctl register username kosmos.org password
+
+## Change a user's password
+
+    sudo /opt/ejabberd-18.06/bin/ejabberdctl change_password username kosmos.org new_password
+
+## List users
+
+    sudo /opt/ejabberd-18.06/bin/ejabberdctl registered_users kosmos.org