PR edits

docs/2.3/admin-guide.md

@@ -826,17 +826,18 @@ tunnel to "main" if it knows the secret, the cluster join token declared in the
     permitted to. Trusted clusters work only one way: users from "east" cannot
     connect to the nodes in "main".
 
-Now, with the main claster prepared to allow remote clusters to connect to it,
-lets configure "east". The administrator of the eastern cluster must create the
-following resource file:
+Now, with the main cluster prepared to allow remote clusters to connect to it,
+lets configure "east". The administrator of "east" must create the following
+resource file:
 
 ```bash
-# save this to main-cluster.yaml
+# cluster.yaml
 kind: trusted_cluster
 version: v2
 metadata:
-  # each trusted cluster must be given a name
-  name: master
+  # each trusted cluster must be given a name. it does not have to match how
+  # clusters are named internally.
+  name: main
 spec:
   # this field allows to create tunnels that are disabled, but can be enabled later.
   enabled: true
@@ -844,12 +845,21 @@ spec:
   token: secret-token-to-add-new-clusters
   # the address in 'host:port' form of the reverse tunnel listening port on the
   # "master" proxy server:
-  tunnel_addr: proxy.master:3024
+  tunnel_addr: proxy.main:3024
   # the address in 'host:port' form of the web listening port on the
   # "master" proxy server:
-  web_proxy_addr: proxy.master:3080
+  web_proxy_addr: proxy.main:3080
 ```
 
+... and create it:
+
+```bash
+$ tctl create cluster.yaml
+```
+
+At this point the users of the main cluster should be able to see "east" in the
+list of available clusters.
+
 ### Using Trusted Clusters
 
 It's worth repeating: the users of "east" cannot see or connect to the main

docs/2.3/img/tunnel.svg

@@ -25,10 +25,10 @@
     <switch>
         <foreignObject style="overflow:visible;" pointer-events="all" width="136" height="22" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility">
         <div xmlns="http://www.w3.org/1999/xhtml" style="display: inline-block; font-size: 20px; font-family: Helvetica; color: rgb(77, 77, 77); line-height: 1.2; vertical-align: top; overflow: hidden; max-height: 26px; max-width: 181px; width: 138px; white-space: normal; word-wrap: normal; font-weight: bold; text-align: center;">
-        <div xmlns="http://www.w3.org/1999/xhtml" style="display:inline-block;text-align:inherit;text-decoration:inherit;">master cluster</div>
+        <div xmlns="http://www.w3.org/1999/xhtml" style="display:inline-block;text-align:inherit;text-decoration:inherit;">"main" cluster</div>
         </div>
         </foreignObject>
-        <text x="68" y="21" fill="#4D4D4D" text-anchor="middle" font-size="20px" font-family="Helvetica" font-weight="bold">master cluster</text>
+        <text x="68" y="21" fill="#4D4D4D" text-anchor="middle" font-size="20px" font-family="Helvetica" font-weight="bold">"main" cluster</text>
     </switch>
     </g>