Terraform upgrade to version 1.2.5 - all modules used in environments repo

[vijay-veeranki]

Background

Upgrading to Terraform v1.2.5 https://github.com/ministryofjustice/cloud-platform-environments

Upgrade Paths: 0.14 - 1.0.11 1.0.11 to currently 1.2.5

This may split into multiple tickets to upgrade to 1.0.11 and create a release and then to 1.2.5 and create a release:

github.com/ministryofjustice/cloud-platform-terraform-dms github.com/ministryofjustice/cloud-platform-terraform-dynamodb-cluster github.com/ministryofjustice/cloud-platform-terraform-ecr-credentials github.com/ministryofjustice/cloud-platform-terraform-elasticache-cluster github.com/ministryofjustice/cloud-platform-terraform-elasticsearch github.com/ministryofjustice/cloud-platform-terraform-github-design-history github.com/ministryofjustice/cloud-platform-terraform-github-prototype github.com/ministryofjustice/cloud-platform-terraform-irsa github.com/ministryofjustice/cloud-platform-terraform-pushgateway github.com/ministryofjustice/cloud-platform-terraform-rds-aurora github.com/ministryofjustice/cloud-platform-terraform-rds-instance github.com/ministryofjustice/cloud-platform-terraform-s3-bucket github.com/ministryofjustice/cloud-platform-terraform-serviceaccount github.com/ministryofjustice/cloud-platform-terraform-sns-topic github.com/ministryofjustice/cloud-platform-terraform-sqs

Proposed user journey

• Upgrade modules to v1.0.11 first (this may split into multiple tickets)
• Once it is applied successfully
• Upgrade the modules to version 1.2.5

Approach

follow this runbook: https://runbooks.cloud-platform.service.justice.gov.uk/upgrade-terraform-version.html#upgrade-all-terraform-modules

• Update the terraform version for each module to v1.0.11
• Make sure there are no changes, and if there are any minor changes update accordingly ( executing a terraform plan resulting in no proposed changes is crucial. Otherwise, pending changes can add additional unknowns to the upgrade process.)
• Create a new release for 1.011
• Update the module version and terraform version in the infrastructure repo related to 1.0.11
• Apply the changes (Please note that completing the upgrade will require running a successful terraform apply for your target version)
• Update the terraform version for each module to v1.2.5
• • Make sure there are no changes, and if there are any minor changes update accordingly ( executing a terraform plan resulting in no proposed changes is crucial. Otherwise, pending changes can add additional unknowns to the upgrade process.)
• Create a new release for 1.2.5
• Update the module version and terraform version in the infrastructure repo related to 1.2.5
• Apply the changes (Please note that completing the upgrade will require running a successful terraform apply for your target version)

Which part of the user docs does this impact

https://runbooks.cloud-platform.service.justice.gov.uk/upgrade-terraform-version.html#upgrade-terraform-version

Questions / Assumptions

No breaking changes in v0.15 https://github.com/hashicorp/terraform/blob/v0.15/CHANGELOG.md

Definition of done

• [ ] Terraform version upgraded to v1.2.5

Reference

How to write good user stories