Скачать или смотреть How to Retrieve the Current ssm sessionId Easily After Starting a New Session

Discover how to effortlessly get the current `ssm sessionId` in AWS after initiating a session, using effective methods that simplify the process.
---
This video is based on the question https://stackoverflow.com/q/66530126/ asked by the user 'Bruno_Ferreira' ( https://stackoverflow.com/u/933558/ ) and on the answer https://stackoverflow.com/a/66580856/ provided by the user 'Bruno_Ferreira' ( https://stackoverflow.com/u/933558/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to get current ssm sessionId after starting a new session?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Retrieve the Current ssm sessionId Easily After Starting a New Session

When working with Amazon Web Services (AWS), specifically the Systems Manager (SSM) Session Manager, you might find yourself wanting to know the current session ID immediately after you start a session. This session ID is critical as it helps in managing and monitoring your active sessions.

In this guide, we will walk you through the methods to obtain the current ssm sessionId directly and efficiently.

Understanding the Problem

Upon starting a new SSM session, you might notice output that indicates the session has begun with its corresponding session ID:

[[See Video to Reveal this Text or Code Snippet]]

This output is helpful, but if you want to capture the session ID programmatically, you need a cleaner method to retrieve it without manually searching through logs or using overly complex commands.

Solution Overview

There are mainly two techniques that can help you get the current ssm sessionId after a new session starts:

Using the SSM agent's log files.

Retrieving the session ID from the process ID (PID) of the session worker.

Method 1: Accessing the SSM Agent's Log Files

The first method leverages the fact that the SSM agent records the names of the channel, which correspond to the session ID in its log files located in the /var/lib directory on your EC2 instance. Here’s how you can retrieve the session ID:

Get the EC2 Instance ID:
This can be done using a simple curl command that fetches the metadata.

[[See Video to Reveal this Text or Code Snippet]]

Retrieve the Most Recent Channel:
You then list the channels in the specified directory to find the latest one, which matches your active session ID.

[[See Video to Reveal this Text or Code Snippet]]

This command will return the most recent session ID without needing to parse through any log files manually.

Method 2: Extracting From the Session Worker Process ID

The second method provides an alternative approach recommended by AWS Support. This method involves finding the parent process ID of the shell and searching for the SSM Session Worker to extract the session ID.

Create a Bash Script:
You can run this script directly in the session shell. It will loop through the process IDs until it finds the session worker and extracts the session ID.

[[See Video to Reveal this Text or Code Snippet]]

This script identifies the session worker process and extracts its session ID safely. Make sure to run it with sudo to ensure you have the necessary permissions to access the process information.

Conclusion

Obtaining the current ssm sessionId after starting a session is straightforward with the right approaches. Whether you choose to get the session ID from the SSM agent logs or via the process ID of the session worker, both methods are efficient and effective. By utilizing these techniques, you will streamline your workflow in AWS and enhance your ability to manage sessions effectively.

Now that you have these solutions at your disposal, you can choose the method that best fits your needs. Happy coding!