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# alias and shortcut | |
cat << EOF >> ~/.bashrc | |
alias k=kubectl | |
alias kns='kubectl config set-context --current --namespace ' | |
export do="--dry-run=client -o yaml" | |
export fo="--force --grace-period 0" | |
source <(kubectl completion bash) | |
complete -F __start_kubectl k | |
EOF | |
# setup vim | |
cat << EOF > ~/.vimrc | |
set tabstop=2 | |
set expandtab | |
set shiftwidth=2 | |
EOF | |
# install kube-ps1 | |
curl -o /etc/kube-ps1 https://raw.githubusercontent.com/jonmosco/kube-ps1/master/kube-ps1.sh | |
cat << EOF >> ~/.bashrc | |
source /etc/kube-ps1 | |
PS1='[\u@\h \W \$(kube_ps1)]\\$ ' | |
EOF | |
cat << EOF > etcd.sh | |
export ETCDCTL_API=3 | |
# --prefix --keys-only | |
etcdctl \ | |
--cert /etc/kubernetes/pki/apiserver-etcd-client.crt \ | |
--key /etc/kubernetes/pki/apiserver-etcd-client.key \ | |
--cacert /etc/kubernetes/pki/etcd/ca.crt \ | |
get /registry/secrets/<namespace>/<secret> | |
EOF | |
cat << EOF > upgrade | |
kubectl drain --ignore-daemonsets master-node | |
apt-cache show kubeadm | grep 1.21.0 | |
apt-get install kubeadm=1.21.0 kubectl=1.21.0 kubelet=1.21.0 | |
kubeadm upgrade plan | |
kubeadm upgrade apply v1.21.0 | |
kubectl uncordon master-node | |
# Node | |
kubeadm upgrade node | |
systemctl daemon-reload && systemctl restart kubelet | |
kubectl uncordon worker-node | |
EOF |
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