Update Management

In this module

1. We will create Patch Baseline for Windows Server 2016 & Amazon Linux 2. ( patch_baseline.tf)
2. 2 Maintainance Window for Updates to be dployed on instances for TEST and PROD -- For Test systems, maintainance windows is 3rd Sunday of each month -- For Prod Systems, Maintance windows is 4th Sunday of each month. ---( mw.tf) -- Maintainance window is 4 hours and cutoff point 1 hour before.
3. Register Target for patchig -- ( Targets are registered via Tag and Value) -- (registered_targets.tf )
4. Register Tasks for to be performed. (tasks.tf)
5. TFVARS required for Deployment. -- This article assumes that you have configured aws cli and your user can perform administrative tasks. -- (vars.tf) -- Keeping backend on S3 Bucket.
6. Create an role for AWS Systems Manager to be assumed. -- (automation_role.tf)
7. SNS Topic to update. You need to manually register EMAILD as terraform doesnt support email id subscribe.