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Option to auto install AWS Systems Manager(SSM agent) on the existing AWS EC2 instances – CentOS

Is there a way to auto-install AWS Systems Manager on the existing AWS EC2 instances.

I see the SSM agent is pre-install on Amazon Linux, but how about the other OS like Redhat, ubuntu, centos?

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2

Answers


  1. 0

    how about the other OS like Redhat, ubuntu, centos?

    Ubuntu also has pre-installed SSM Agent. From docs:

    SM Agent is preinstalled, by default, on the following Amazon Machine Images (AMIs):

    Amazon Linux

Amazon Linux 2

Ubuntu Server 16.04

Ubuntu Server 18.04

Amazon ECS-Optimized

    For the remaining AMIs, you could install the agent as described in the docs and create a custom AMI. This way you do it only once, and re-use the custom AMIs.

    As an alternative, a User Data could be used to automate the installation of the agent whenever an instance is launch.

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  2. 0

    Work for RHEL 8.4 add:

    Content-Type: multipart/mixed; boundary="//"
MIME-Version: 1.0

--//
Content-Type: text/cloud-config; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="cloud-config.txt"

#cloud-config
cloud_final_modules:
- [scripts-user, always]

--//
Content-Type: text/x-shellscript; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="userdata.txt"

#!/bin/bash
cd /tmp
sudo dnf install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm
sudo systemctl enable amazon-ssm-agent
sudo systemctl start amazon-ssm-agent
--//--
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