Installing Kubernetes - CKA Course - Linux Academy

k8s-install-master-node.sh

# Initialize the cluster
sudo kubeadm init --pod-network-cidr=10.244.0.0/16

# Set up local kubeconfig
mkdir -p $HOME/.kube

sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

sudo chown $(id -u):$(id -g) $HOME/.kube/config

# Apply Calco CNI
kubectl apply -f https://docs.projectcalico.org/v3.14/manifests/calico.yaml

I has to use sudo to create the .kube dir. the Home directory is owned by root

sudo mkdir -p $HOME/.kube

main: ls -al ~
total 28
drwxr-xr-x 4 root       root       4096 Jul 28 07:14 .
drwxr-xr-x 4 root       root       4096 Jul  7 20:45 ..
-rw-r--r-- 1 cloud_user cloud_user   95 Jul 10 15:28 .bash_history
-rw-r--r-- 1 cloud_user cloud_user 3106 Jul 10 15:13 .bashrc
drwxr-xr-x 2 root       root       4096 Jul 28 07:15 .kube
-rw-r--r-- 1 cloud_user cloud_user  161 Jul 10 15:15 .profile
drwx------ 2 cloud_user cloud_user 4096 Jul 28 06:11 .ssh
main: sudo chown cloud_user:cloud_user ~/.kube/

You must take note of the output and use the specific kubeadm join ... command to join the worker nodes to the cluster and run it as sudo