Ubuntu 21.04
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MicroK8s : Add Nodes2021/05/13

 
If you'd like to add more Nodes to your MicroK8s Cluster, Configure like follows.
[1] Display commands to join in Cluster on primary Node.
root@dlp:~#
microk8s add-node

From the node you wish to join to this cluster, run the following:
microk8s join 10.0.0.30:25000/4079ed36e23db352e762467547b25954

If the node you are adding is not reachable through the default interface you can use one of the following:
 microk8s join 10.0.0.30:25000/4079ed36e23db352e762467547b25954
[2] On a new Node, Install MicroK8s and join in Cluster.
root@node01:~#
snap install microk8s --classic

microk8s (1.20/stable) v1.20.6 from Canonical✓ installed
# run the command confirmed in [1]

root@node01:~#
microk8s join 10.0.0.30:25000/4079ed36e23db352e762467547b25954

Contacting cluster at 10.0.0.30
Waiting for this node to finish joining the cluster. ..
[3] On primary Node, Make sure a new Node has been added in Cluster.
root@dlp:~#
microk8s kubectl get nodes

NAME               STATUS   ROLES    AGE     VERSION
dlp.srv.world      Ready    <none>   29m     v1.20.6-34+e4abae43f6acde
node01.srv.world   Ready    <none>   8m30s   v1.20.6-34+e4abae43f6acde
[4] To remove a Node, Set like follows.
# specify Node name and run [remove-node]

# if remove forcely, add [--force] option

root@dlp:~#
microk8s remove-node node01.srv.world
root@dlp:~#
microk8s kubectl get nodes

NAME            STATUS   ROLES    AGE   VERSION
dlp.srv.world   Ready    <none>   34m   v1.20.6-34+e4abae43f6acde
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