During a recent training, a student asked me how I would update the configuration of CoreDNS on a Kubernetes cluster, when the cluster is deployed is Terraform and comes with CoreDNS pre-installed. This article explains how to do it, and shows more generally speaking how to get Terraform to update resources that it…
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When they start using Docker, people often ask: “How do I get inside my containers?” and other people will tell them “Run an SSH server in your containers!” but that’s a very bad practice. We will see why it’s wrong, and what you should do instead.