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kubeadm添加一个新的节点

首先获取证书的hash值, 这个值用于 --discovery-token-ca-cert-hash

HASH=$(openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //')

获取token, 这个值用于 --token

kubeadm token list

如果没有任何token列出,创建一个

TOKEN=$(kubeadm token create)

添加节点到集群

kubeadm join k8smaster:6443 --token ${TOKEN} --discovery-token-ca-cert-hash sha256:${HASH}