Hey everyone! I'm wondering about achieving a perfect deployment rate (like 99-100% success) when setting up a full environment from scratch using Terraform. I'm building an analytics environment in Azure for a client who expects zero errors during deployment. However, I've been facing issues — for instance, the pipeline often fails because Terraform tries to provision resources too quickly before Azure has finished processing things like RBAC permissions. I keep getting errors like the ones where it creates a key vault and sets permissions, but it fails because it's trying to access everything too soon. I've added dependencies, but I still run into problems with other resources, such as Synapse workspaces and Databricks. It seems like every execution of the pipeline requires a few reruns to finally succeed. Is it realistic to aim for flawless execution? Should I just be more patient and add timeouts, or is this a coding issue? What's your experience with deploying environments using Terraform?
5 Answers
I’ve dealt with similar issues. One of the best workarounds I've found is to use the time_sleep provider to add intentional pauses where needed. Along with that, using a landing zone model can help streamline deployments, but it might take longer compared to a single script. It’s a trade-off between reliability and speed.
For setting up your key vault, make sure your secrets depend on the access policy you’re deploying. That generally helps avoid issues. If you're still struggling, time_sleep can help as a last resort to let APIs catch up.
I use the alz-certified module that has a bootstrap phase specifically for situations like this. It really helps manage dependencies effectively. If you need more details or help, just let me know!
From what I’ve seen in larger organizations, splitting deployments into layers can be really effective. Instead of running everything in one go, breaking it down into several deployments ensures core resources are created in the right sequence. While it adds complexity, it’s usually more reliable than relying entirely on dependencies within a single Terraform plan.
You probably can't achieve a successful deployment in one go unless you set up the entire Azure tenant at once. It's better to isolate your resources and have separate state files. This type of project typically requires collaboration with multiple teams to ensure everything goes smoothly.
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