Summary
In this chapter, we learned about the deployment strategies we can follow with Argo CD combined with Argo Rollouts and how we can minimize deployment failures with automation. We created a real CI/CD pipeline in GitHub Actions, and we implemented a full blue-green deployment in Argo CD with GitOps practices. We did a logical group separation in Argo CD with Argo Projects, and we gave limited to access with the Project tokens in a CI/CD system.
We leveraged Sync phases and resource hooks in order to run integration tests and fail the pipeline if those tests failed and most importantly, keep the resource to debug the reasons for the failure in the PreSync phase. The hook policy of Argo CD gave us the power to delete the redundant completed-with-success integration tests so we could keep our cluster clean. In the PostSync phase, when all phases ran successfully, we were able to roll out the latest version of our application without any failures. Also, we used ApplicationSet...
