Tips for Kind

Contents

1. Pause Kind when not needed
2. Instal metrics-server locally

Pause Kind when not needed

When you know you are not going to 't work with REANA locally for several hours, you can pause Kind docker process by doing:

$ reana-dev cluster-pause

This will issue docker pause kind-control-plane command internally. Pausing Kind in this manner will help to save some battery life (and some fan noise!).

When you are ready to work on REANA again, you can run:

$ reana-dev cluster-unpause

It may take a few minutes before all the networking between the pods is up and running and the cluster is operational again.

(Note that "unpausing" was sometime causing issues in the past when sleeping for long, moving between countries and wifi networks, and updating operating systems and kernels in the meantime, and whatnot. If it happens that the cluster doesn't wake up, kind delete cluster might be a handy last resort.)

Install metrics-server locally

If kubectl top nodes doesn't work for you locally on Kind, it is because you need Kubernetes metrics-server installed. Please follow these steps:

$ kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
$ kubectl edit -n kube-system deployment/metrics-server
# Add `--kubelet-insecure-tls` to `spec.template.spec.containers[0].args` and save.