When Installing Kubernetes Using Kubeadm ...

 If you're going to build your own Kubernetes cluster, then kubeadm is a really good tool for that.

One word of advice is that you should specify the --pod-network-cidr IP address range explicitly and don't rely on the defaults.

So, for instance, kubeadm init --pod-network-cidr=192.168.0.0/16 assuming that the 192.168 network address does not conflict or overlap with any other subnet address in your network.

Better yet, consider printing the default config options to a file first using kubeadm config print init-defaults > your-config-file.yaml then tweak these defaults to fit your need. Once you're happy with your tweaked config file, then run kubeadm init --config=your-config-file.yaml