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Description:

picsh 0.2.1

picsh
Parallel Interactive Cluster Shell, for rapid ad-hoc cluster ops.
Requirements

Tested on Linux only (Fedora 35, Amazon Linux 2, Ubuntu 18)
Tested with Python 3.6 and up

Install
$pip install picsh
Features

Fast interactive shells (re-uses the ssh session)
Stateful (cd /var/log followed by pwd gives you /var/log)
Target a subset of nodes (@2,3,4 mkdir /etc/newconfd)
Ssh to a single node to run full screen curses apps like top
Browse receive buffers per node
Keyboard and mouse driven
Works over ssh so you can put this on a jump host

Demo

Usage

Using the command line args:

$picsh -i /home/bob/.keys/slurm_host_key -l ec2-user -h 10.1.0.23 10.1.0.24 10.1.0.25

Using static cluster configs:

Create a cluster yaml and put it in ~.picsh/cluster_name.yaml.
Example:
$ cat .picsh/slurm-dev.yaml
cluster_name: slurm-dev
login_user: ec2-user
ssh_key_path: /home/ec2-user/.keys/pcluster.pem
nodes:
- ip: "10.0.27.155"
- ip: "10.0.25.13"
- ip: "10.0.23.208"
- ip: "10.0.31.113"
- ip: "10.0.18.254"

then run
$picsh

To get a debug log in ~/.picsh , pass -v on the command line