使用python的boto3库登录到AWS实例

Question

I am attempting to write a python code that would few of my manual steps in logging into the AWS platform.

In Ubuntu terminal , I used to write the command

ssh -A ec2-user@<ip-address>

and then again log into another instance using

ssh ec2-user@<ip.address>

Now I am looking at python code that would be able to automate this logging in process. I have written the following code till now.

import boto3
ec2 = boto3.resource('ec2')

Answer 1

There are 2 ways mostly to configure the boto3 library.

1. You need to configure it first on your system and use the same configuration everywhere. You can use AWS CLI for this by running aws configure on your terminal.

2. Set the environment variables and call the boto3 configuration via process.env.ENV_KEY and then use it like :

client = boto3.client( 'ec2', aws_access_key_id=process.env.ACCESS_KEY, aws_secret_access_key=process.env.SECRET_KEY, aws_session_token=process.env.SESSION_TOKEN, )

Answer 2

If you want to perform actions on a running instance, boto3 is not what you're looking for. What you're asking about is more in the realm of what's called configuration management .

While you could write something yourself using an SSH library like Paramiko , you may want to look at a more purpose-built software package like Fabric . It's built on-top of the aforementioned Paramiko, with added functionality tailored to running commands on remote servers. For a more full-featured, open source configuration management solution, I recommend looking into Ansible .

AWS also has a native service for configuring EC2 instances called EC2 Run Command .