GitOps

„If it is not in GitOps, it does not exist“ - However, managing objects partially only by Gitops was always an issue, since ArgoCD would like to manage the whole object. For example, when you tried to work with node labels and would like to manage them via Gitops, you would need to put the whole node object into ArgoCD. This is impractical since the node object is very complex and typically managed by the cluster. There were 3rd party solutions (like the patch operator), that helped with this issue.

However, with the Kubernetes feature Server-Side Apply this problem is solved. Read further to see a working example of this feature.

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. GitOps itself uses Git pull request to manager infrastructure and application configuration.