kssh

A utility for generating ssh config files for every node of a cluster.

Usage

1. Set KUBECONFIG so that you get the desired nodes when you run $ kubectl get nodes.

2. Add Include config.d/* to the top of your ~/.ssh/config.

3. $ mkdir ~/.ssh/config.d

4. $ kssh --bastion bastionIpAddress > ~/.ssh/config.d/clustername

5. $ chmod 600 ~/.ssh/config.d/*

To get the list of host names to connect to:

$ kssh --nodes

Then try sshing into the node:

$ ssh ip-10-16-111-77.us-west-1.compute.internal
Container Linux by CoreOS stable (1520.9.0)
Update Strategy: No Reboots
core@ip-10-16-111-77 ~ $ 

Usage with cssh

kssh can output valid cssh config files for easy cluster ssh access.

cssh is in yum/dnf and apt repos as clusterssh.

1. $ cssh -u # set up cssh
2. $ kssh -cssh clustername > ~/.clusterssh/clustername
3. $ vi ~/.clusterssh/config # edit extra_cluster_file to add ~/.clusterssh/clustername

An example extra_cluster_file line:

extra_cluster_file=~/.clusterssh/prod-west,~/.clusterssh/prod-east