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07-boostrap-kubernetes-workers.md

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Bootstrapping the Kubernetes Workers

In this section you will setup the Kubernetes Workers for worker-1 & worker-2 using kubeadm.

References:

Initialize Workers

On worker-1 & worker-2

sudo kubeadm join 172.22.5.30:6443 --token <token> --discovery-token-ca-cert-hash sha256:<hash> --ignore-preflight-errors=NumCPU,Mem

Note: we are adding --ignore-preflight-errors=NumCPU,Mem

Verify Worker Nodes

On controller-1

kubectl get nodes

output

NAME           STATUS   ROLES                  AGE   VERSION
controller-1   Ready    control-plane,master   30m   v1.23.5
controller-2   Ready    control-plane,master   29m   v1.23.5
worker-1       Ready    <none>                 35s   v1.23.5
worker-2       Ready    <none>                 25s   v1.23.5

Note: status is Ready since pod networking is setup

Verify Pod Networking for Worker Nodes

We should now see two more calico pods running on our two new worker nodes

kubectl get pods -n kube-system -o wide | grep calico

output

calico-kube-controllers-56fcbf9d6b-tq922   1/1     Running   0             22m     10.142.0.194   controller-2   <none>           <none>
calico-node-85nb7                          1/1     Running   0             2m48s   172.22.5.22    worker-2       <none>           <none>
calico-node-d2gcj                          1/1     Running   0             22m     172.22.5.11    controller-1   <none>           <none>
calico-node-hk8k6                          1/1     Running   0             22m     172.22.5.12    controller-2   <none>           <none>
calico-node-q6pv8                          1/1     Running   0             2m58s   172.22.5.21    worker-1       <none>           <none>

Next: Smoke Test