Aidan Scannell · May 5, 2019

Cluster log in with SSH

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TL;DR Don’t enter your password every time you SSH into a cluster Configure SSH Add your cluster login details to your ssh config ~/.ssh/config so that you can log in with shh CLUSTER_NAME Importantly, you should not need to enter your password. Assuming you log into the cluster with ssh USERNAME@HOSTNAME then your ssh config ~/.ssh/config should have an entry like this Host CLUSTER_NAME…

TL;DR

Don’t enter your password every time you SSH into a cluster

Configure SSH

Add your cluster login details to your ssh config ~/.ssh/config so that you can log in with

shh CLUSTER_NAME

Importantly, you should not need to enter your password. Assuming you log into the cluster with

ssh USERNAME@HOSTNAME

then your ssh config ~/.ssh/config should have an entry like this

Host CLUSTER_NAME
 HostName HOSTNAME
 User USERNAME
 IdentityFile ~/.ssh/YOUR_PRIVATE_KEY

Then you can easily ssh into the cluster with

shh CLUSTER_NAME

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