Here, the master node will only serve Kubernetes services since you do not put "master" at the above command end. However, if you also want to use the master node to deploy containers, you can put "master" at the above command end.
Worker Node
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$ sudo kubeadm ... (the command that you get from the master node)
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Enable SELinux enforcing mode
Now, you need to enable SELinux features in all nodes.
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$ cd KubeArmor/contribution/self-managed-k8s-selinux