cluster_maint.md

Cluster Maintenance (11%)

kubernetes.io > Documentation > Reference > kubectl CLI > kubectl Cheat Sheet

kubernetes.io > Documentation > Tasks > Monitoring, Logging, and Debugging > Get a Shell to a Running Container

kubernetes.io > Documentation > Tasks > Access Applications in a Cluster > Configure Access to Multiple Clusters

kubernetes.io > Documentation > Tasks > Access Applications in a Cluster > Accessing Clusters using API

kubernetes.io > Documentation > Tasks > Access Applications in a Cluster > Use Port Forwarding to Access Applications in a Cluster

Drain a node for maintenance named node1.mylabserver.com

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kubectl drain node1.mylabserver.com --ignore-daemonsets --force

Put the node node1.mylabserver.com back into service, so pods can be scheduled to it

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kubectl uncordon node1.mylabserver.com

Updgrade kubeadm to version 1.18.6

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sudo apt install -y kubeadm --allow-change-held-packages kubeadm=1.18.6-00

Plan and upgrade the control plane components with kubeadm to version 1.18.6

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sudo kubeadm upgrade plan

sudo kubeadm upgrade apply v1.18.6

Update kubelet to version 1.18.6

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sudo apt install kubelet=1.18.6-00

Update kubectl to version 1.18.6

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sudo apt install kubectl=1.18.6-00

Restart kubelet on the node

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sudo systemctl daemon-reload

sudo systemctl restart kubelet

Upgrade the kubelet configuration on a worker node

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sudo kubeadm upgrade node