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停止api-server(k8s的所有master节点)
# 所有master节点执行: # 停api-servermkdir -p tpm_api_conf mv /etc/kubernetes/manifests/kube-apiserver.yaml /root/tpm_api_conf/
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etcd备份(集群中某一节点)
# etcd备份ETCDCTL_API=3;/usr/local/bin/etcdctl --endpoints='https://192.168.1.30:2379' --cacert="/etc/ssl/etcd/ssl/ca.pem" --cert="/etc/ssl/etcd/ssl/admin-ks-master01.pem" --key="/etc/ssl/etcd/ssl/admin-ks-master01-key.pem" snapshot save snapshot_20230928.db
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查看备份数据状态
# 查看备份数据状态ETCDCTL_API=3;/usr/local/bin/etcdctl --write-out=table snapshot status snapshot_20230928.db
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停止etcd服务并备份数据目录(etcd所有节点)
# 停etcd:systemctl stop etcd mv /var/lib/etcd/ /root/etcd_bak
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各个etcd节点恢复数据
# 节点30:ETCDCTL_API=3;/usr/local/bin/etcdctl snapshot restore /root/snapshot_20230928.db \--name etcd-ks-master01 \--cert="/etc/ssl/etcd/ssl/admin-ks-master01.pem" \--key="/etc/ssl/etcd/ssl/admin-ks-master01-key.pem" \--cacert="/etc/ssl/etcd/ssl/ca.pem" \--endpoints="https://127.0.0.1:2379" \--initial-advertise-peer-urls="https://192.168.1.30:2380" \--initial-cluster="etcd-ks-master01=https://192.168.1.30:2380,etcd-ks-master02=https://192.168.1.31:2380,etcd-ks-master03=https://192.168.1.32:2380" \--data-dir=/var/lib/etcd# 节点31:ETCDCTL_API=3;/usr/local/bin/etcdctl snapshot restore /root/snapshot_20230928.db \--name etcd-ks-master02 \--cert="/etc/ssl/etcd/ssl/admin-ks-master02.pem" \--key="/etc/ssl/etcd/ssl/admin-ks-master02-key.pem" \--cacert="/etc/ssl/etcd/ssl/ca.pem" \--endpoints="https://127.0.0.1:2379" \--initial-advertise-peer-urls="https://192.168.1.31:2380" \--initial-cluster="etcd-ks-master01=https://192.168.1.30:2380,etcd-ks-master02=https://192.168.1.31:2380,etcd-ks-master03=https://192.168.1.32:2380" \--data-dir=/var/lib/etcd# 节点32:ETCDCTL_API=3;/usr/local/bin/etcdctl snapshot restore /root/snapshot_20230928.db \--name etcd-ks-master03 \--cert="/etc/ssl/etcd/ssl/admin-ks-master03.pem" \--key="/etc/ssl/etcd/ssl/admin-ks-master03-key.pem" \--cacert="/etc/ssl/etcd/ssl/ca.pem" \--endpoints="https://127.0.0.1:2379" \--initial-advertise-peer-urls="https://192.168.1.32:2380" \--initial-cluster="etcd-ks-master01=https://192.168.1.30:2380,etcd-ks-master02=https://192.168.1.31:2380,etcd-ks-master03=https://192.168.1.32:2380" \--data-dir=/var/lib/etcd
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etcd节点修改数据目录权限并启动etcd
# 所有节点执行: # 修改属组 chown -R etcd:root /var/lib/etcd/# 启动etcd systemctl start etcd
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启动api-server(所有k8s master节点)
# etcd启动完成后,恢复api配置 mv /root/tpm_api_conf/kube-apiserver.yaml /etc/kubernetes/manifests/kube-apiserver.yaml