How to SSH and run commands in EC2 using boto3?

Question

I want to be able to ssh into an EC2 instance, and run some shell commands in it, like this.

How do I do it in boto3?

Answer 1

Here is how I have done

import boto3
import botocore
import boto
import paramiko

ec2 = boto3.resource('ec2')

instances = ec2.instances.filter(
    Filters=[{'Name': 'instance-state-name', 'Values': ['running']}])
i = 0
for instance in instances:
    print(instance.id, instance.instance_type)
    i+= 1
x = int(input("Enter your choice: "))
try:
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    privkey = paramiko.RSAKey.from_private_key_file('address to .pem key')
    ssh.connect(instance.public_dns_name,username='ec2-user',pkey=privkey)
    stdin, stdout, stderr = ssh.exec_command('python input_x.py')
    stdin.flush()
    data = stdout.read().splitlines()
    for line in data:
        x = line.decode()
        #print(line.decode())
        print(x,i)
        ssh.close()

For the credentails, I have added AWSCLI package, then in the terminal run

aws configure

enter the credentials. All of them will be saved in .aws folder, u can change the path too.