Terraform state sync with external changes

I have terraform managing my infrastructure in Azure. However, there are cases where the state can get out of sync when other services are changing the infrastructure as well.

For example, I have terraform create an Application Gateway. But I also have an AKS cluster with AGIC enabled, which dynamically updates/changes rules, listeners, etc. inside of Application Gateway. So if terraform is re-run after AGIC makes some changes, terraform doesn't know and wants to reset to the default config it knows about.

Maybe this isn't possible, but is there an automated way to sync the two? It's kind of unfeasible to have to go into the terraform config and manually add the changes AGIC makes every time it does so. At this point, is it even worth managing Application Gateway with terraform?

https://stackoverflow.com/questions/67426738/terraform-state-sync-with-external-changes May 07, 2021 at 06:30AM