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@ -11,44 +11,48 @@
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- one knows there are other, possibly better ways |
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# INSTALLATION |
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ssh master1 bash -xs < k8s-ubuntu-install<br> |
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```bash |
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ssh master1 bash -xs < k8s-ubuntu-install |
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ssh worker1 bash -xs < k8s-ubuntu-install |
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``` |
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## generic installation procedure |
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- kubeadm init on <strong>master1</strong> |
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- kubeadm join on <strong>worker1</strong> |
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# UPGRADE |
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```bash |
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## when upgrading point releases |
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export K8S_VERSION_CURRENT=$(kubectl version --short | awk '/^Server/{print substr($3,2)}')<br> |
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export K8S_VERSION_CURRENT=$(kubectl version --short | awk '/^Server/{print substr($3,2)}') |
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export K8S_VERSION_LATEST=$(curl -sL https://dl.k8s.io/release/stable-${K8S_VERSION_CURRENT%.*}.txt) |
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## otherwise |
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export K8S_VERSION_MAJOR=1<br> |
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export K8S_VERSION_MAJOR=1 |
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export K8S_VERSION_LATEST=$(curl -sL https://dl.k8s.io/release/stable-${K8S_VERSION_MAJOR}.txt) |
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### control plane first |
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kubectl drain master1 --ignore-daemonsets --delete-local-data<br> |
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kubectl drain master1 --ignore-daemonsets --delete-local-data |
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ssh master1 sudo apt update |
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### when upgrading the OS |
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ssh master1 bash -xs < k8s-ubuntu-update-os |
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### otherwise |
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ssh master1 bash -xs < k8s-ubuntu-update-master<br> |
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kubectl uncordon master1<br> |
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sleep 60<br> |
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ssh master1 bash -xs < k8s-ubuntu-update-master |
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kubectl uncordon master1 |
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sleep 60 |
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ssh master1 sudo docker image prune -af |
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### workload plane, workers one by one |
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kubectl drain worker1 --ignore-daemonsets --delete-local-data<br> |
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kubectl drain worker1 --ignore-daemonsets --delete-local-data |
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ssh worker1 sudo apt update |
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### when upgrading the OS |
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ssh worker1 bash -xs < k8s-ubuntu-update-os |
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### otherwise |
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ssh worker1 bash -xs < k8s-ubuntu-update-worker<br> |
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kubectl uncordon worker1<br> |
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sleep 60<br> |
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ssh worker1 bash -xs < k8s-ubuntu-update-worker |
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kubectl uncordon worker1 |
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sleep 60 |
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ssh worker1 sudo docker image prune -af |
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``` |
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