Kubernetes : Configure Worker2022/11/02 |
Install Kubeadm to Configure Multi Nodes Kubernetes Cluster.
This example is based on the environment like follows.
-----------+---------------------------+--------------------------+------------ | | | eth0|10.0.0.25 eth0|10.0.0.71 eth0|10.0.0.72 +----------+-----------+ +-----------+-----------+ +-----------+-----------+ | [ ctrl.srv.world ] | | [snode01.srv.world] | | [snode02.srv.world] | | Control Plane | | Worker Node | | Worker Node | +----------------------+ +-----------------------+ +-----------------------+ |
[1] | |
[2] | Join in Kubernetes Cluster which is initialized on Control Plane Node. The command for joining is just the one [kubeadm join ***] which was shown on the bottom of the results on initial setup of Cluster. |
root@snode01:~# kubeadm join 10.0.0.25:6443 --token sx7691.vhnz9i9szyqecy6e \ --discovery-token-ca-cert-hash sha256:6166ac8d73379081c2ca2b9625480b3f2cc992f571659e776b68d676e84cc3d9 [preflight] Running pre-flight checks [preflight] Reading configuration from the cluster... [preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml' [kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml" [kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env" [kubelet-start] Starting the kubelet [kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap... This node has joined the cluster: * Certificate signing request was sent to apiserver and a response was received. * The Kubelet was informed of the new secure connection details. Run 'kubectl get nodes' on the control-plane to see this node join the cluster. # OK if the message above is shown |
[3] | Verify Status on Control Plane Node. That's Ok if all STATUS are Ready. |
root@ctrl:~# kubectl get nodes NAME STATUS ROLES AGE VERSION ctrl.srv.world Ready control-plane 19m v1.25.3 snode01.srv.world Ready <none> 4m49s v1.25.3 snode02.srv.world Ready <none> 80s v1.25.3 |
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