write a shell script to ssh to a remote machine and execute commands

Question

I have two questions:

1. There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine.

Answer 1

This work for me.

Syntax : ssh -i pemfile.pem user_name@ip_address 'command_1 ; command 2; command 3'

#! /bin/bash

echo "########### connecting to server and run commands in sequence ###########"
ssh -i ~/.ssh/ec2_instance.pem ubuntu@ip_address 'touch a.txt; touch b.txt; sudo systemctl status tomcat.service'