[Example] Provide instructions of setting up passwordless SSH login. (d…

…mlc#2707)
standbyme · Feb 28, 2021 · 28b0a76 · 28b0a76
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diff --git a/examples/pytorch/graphsage/experimental/README.md b/examples/pytorch/graphsage/experimental/README.md
@@ -86,7 +86,8 @@ could like this:
 172.31.16.98
 ```
 
-Users need to make sure that the master node (node-0) has right permission to ssh to all the other nodes.
+Users need to make sure that the master node (node-0) has right permission to ssh to all the other nodes without password authentication.
+[This link](https://linuxize.com/post/how-to-setup-passwordless-ssh-login/) provides instructions of setting passwordless SSH login.
 
 ### Step 2: partition the graph.
 

diff --git a/examples/pytorch/rgcn/experimental/README.md b/examples/pytorch/rgcn/experimental/README.md
@@ -89,7 +89,8 @@ User need to set their own IP configuration file `ip_config.txt` before training
 172.31.0.4
 ```
 
-Users need to make sure that the master node (node-0) has right permission to ssh to all the other nodes.
+Users need to make sure that the master node (node-0) has right permission to ssh to all the other nodes without password authentication.
+[This link](https://linuxize.com/post/how-to-setup-passwordless-ssh-login/) provides instructions of setting passwordless SSH login.
 
 ### Step 2: partition the graph.