Managed Instances

• Instance which is in cloud or on premise with ssm agent installed and connected to AWS Systems Manger is managed instance

Run-Command

• Command which can be executed on the managed instance

Document

• We have used a Document called as AWS-Runshellscript
• Two kinds of Documents
  • Predefined Documents:
    • Create by AWS
  • Custom Documents:
    • Create by users
    • To Create Custom Documents we need to know JSON & Document Syntax. Refer Here

State Manager

Use-Cases:

• Ensure SSH Access to all linux machine is production environment is denied
  • Execute stop command periodically to maintain state is stopped sudo service sshd stop
  • Ensure apache server is enabled
  • Ensure free spache on your C drive is grater than 5 GB