[Parallel SSH] PDSH - Parallel ssh #ssh #pdsh

pdsh.sh

## Macos install
brew install pdsh

## Skip strict host file checking - Add this to .zshrc file
export PDSH_SSH_ARGS_APPEND="-q -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o PreferredAuthentications=publickey"

## Setup default ssh key file in "~/.ssh/config" file
IdentityFile "~/.ssh/xyz.pem"

## Add an alias helper commands in the .zshrc file
alias pdsh2='pdsh -l centos -w ^/Users/pm/.ssh/pdsh_proj1_hosts.txt'

# now you can use pdsh2 followed by the command in the commandline 

## Using sudo in pdsh
pdsh2 "sudo su - root -c 'echo 111.111.111.111 ec2-111-111-111-111.us-west-1.compute.amazonaws.com ec2-111-111-111-111 >> /etc/hosts'"