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Wednesday, May 20, 2020

Preparing your kubernetes nodes

I often create, destroy, rebuild k8s nodes and I have noticed a few things which are a must. I personally use RKE to build, rebuild, reconfigure, configure these clusters but irrespective of that the list should apply to you too.
note: replace username ambi with whatever you like. The following list if for ubuntu 18+
1. create a new user called ambi and add him to sudo group.
2. log in as this user, install docker-ce by following the docker's official documentation. Add above user to docker group.
3. Make sure /etc/docker/certs.d/<>/<>.crt is present on all nodes
4. sudo chown <newly created user from step 1> /etc/docker
5. If you have storageclasses then make sure to have a default one.
kubectl patch storageclass <mystorageclassname> -p '{"metadata": {"annotations":{"":"true"}}}'

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