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Automate Amazon RDS for PostgreSQL major or minor version upgrade using AWS Systems Manager and Amazon EC2

  • Automating Amazon RDS for PostgreSQL major or minor version upgrades using AWS Systems Manager and Amazon EC2 simplifies database lifecycle management.
  • Manual upgrades through AWS Management Console can be error-prone and disrupt application stability.
  • The automation process involves AWS CLI commands in a Unix shell script and integration with AWS Systems Manager for scaling.
  • Pre-upgrade checks and instance maintenance updates are executed through reusable modules: PREUPGRADE and UPGRADE.
  • Logging and notification features are added for monitoring and notification through Amazon S3 and Amazon SNS.
  • The solution supports major and minor version upgrades and can be extended for multi-VPC or cross-account deployments with additional considerations.
  • Prerequisites include IAM user permissions, cloning the GitHub repository, preparing RDS instances, creating S3 bucket, SNS topic, IAM policy, and IAM role.
  • An EC2 instance hosts and runs the upgrade script requiring AWS CLI, PostgreSQL client, bc, and jq library.
  • Implementation steps include uploading the script to S3, creating an Automation Document, and executing the upgrade process through Systems Manager.
  • Comprehensive monitoring and notification mechanisms are in place, providing logs for pre-upgrade and upgrade phases.

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