MicroK8s : Add Nodes2021/04/07 |
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If you'd like to add more Nodes to your MicroK8s Cluster, Configure like follows.
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| [1] | Confirm commands to join in Cluster on primary Node. |
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[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/e4d12ddd881447063bfb7aa157989737 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/e4d12ddd881447063bfb7aa157989737 # if Firewalld is running, allow ports [root@dlp ~]# firewall-cmd --add-port={25000/tcp,16443/tcp,12379/tcp,10250/tcp,10255/tcp,10257/tcp,10259/tcp} --permanent [root@dlp ~]# firewall-cmd --reload |
| [2] | |
| [3] | On a new Node, Install MicroK8s and join in Cluster. |
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[root@node01 ~]#
snap install microk8s --classic microk8s (1.20/stable) v1.20.5 from Canonical✓ installed
[root@node01 ~]#
export OPENSSL_CONF=/var/lib/snapd/snap/microk8s/current/etc/ssl/openssl.cnf # if Firewalld is running, allow ports [root@node01 ~]# firewall-cmd --add-port={25000/tcp,10250/tcp,10255/tcp} --permanent [root@node01 ~]# firewall-cmd --reload # run the command confirmed in [1] [root@node01 ~]# microk8s join 10.0.0.30:25000/e4d12ddd881447063bfb7aa157989737 Contacting cluster at 10.0.0.30 Waiting for this node to finish joining the cluster |
| [4] | On primary Node, Make sure a new Node has been added in Cluster. |
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[root@dlp ~]# microk8s kubectl get nodes NAME STATUS ROLES AGE VERSION dlp.srv.world Ready <none> 116m v1.20.5-34+40f5951bd9888a node01.srv.world Ready <none> 11s v1.20.5-34+40f5951bd9888a |
| [5] | To remove a Node, Set like follows. |
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# leave from cluster on the target node first [root@node01 ~]# microk8s leave Generating new cluster certificates. Waiting for node to start. # on primary node, remove the target node [root@dlp ~]# microk8s remove-node node01.srv.world
microk8s kubectl get nodes NAME STATUS ROLES AGE VERSION dlp.srv.world Ready <none> 121m v1.20.5-34+40f5951bd9888a |
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