Kubernetes - Upgrading Kubernetes

 

Get the version of the API server utility:

kubectl version --short

Get the version of the Control-Plane Component:

kubeadm version

Get the version of the Agent/Worker Component:

kubelet version

UPGRADING KUBECTL

Release the hold on the version of kubectl to allow it to upgrade:

sudo apt-mark unhold kubectl

Upgrade kubectl:

sudo apt install -y kubectl=<version number>

Verify the version of kubectl:

sudo kubectl version --short

Hold the version of kubectl:

sudo apt-mark hold kubectl

UPGRADING KUBEADM

Release the hold on kubeadm to allow it to upgrade:

sudo apt-mark unhold kubeadm

Plan the upgrade of all the controller components:

sudo kubeadm upgrade plan

Upgrade the controller components:

sudo apt install -y kubeadm=1.23.4-00

Verify the version of kubeadm:

sudo kubeadm version

Hold the version of kubeadm:

sudo apt-mark hold kubeadm

UPGRADING KUBELET

Release the hold on the version of kubectl to allow it to upgrade:

sudo apt-mark unhold kubectl

Upgrade the version of kubelet:

sudo apt install -y kubelet=<version number>

Verify the version of kubelet:

sudo kubelet version

Hold the version of kubelet:

sudo apt-mark hold kubelet