K8s 節點 重裝系統:
準備工做:
1. 備份配置和服務啓動文件:
a. 既是k8s 節點,同時也是 etcd 節點
tar zcvf k8s3.tgz /etc/ssl/etcd /etc/kubernetes /etc/systemd/system/etcd.service /etc/systemd/system/kubelet.service /etc/etcd.env /etc/nginx/nginx.conf /etc/cni/ /etc/calico/ /opt/cni /usr/local/bin/
b. 只是單純的k8s 節點,不是etcd 節點:
tar zcvf k8s13.tgz /etc/ssl/etcd /etc/kubernetes /etc/systemd/system/kubelet.service /etc/nginx/nginx.conf /etc/cni/ /etc/calico/ /opt/cni /usr/local/bin/
2. 重裝系統:
tencent-server —reinstall ins-q5113a3n
3. 還原備份文件
4. 此時由於etcd 集羣中 已經存在了etcd3,而系統又重裝過了,因此須要把原來的 etcd3 刪除,而後 在從新加入
a. 查看 etcd3 節點的 Id:
etcdctl --ca-file /etc/ssl/etcd/ssl/ca.pem --cert-file /etc/ssl/etcd/ssl/node-k8s1.pem --key-file /etc/ssl/etcd/ssl/node-k8s1-key.pem --endpoints 'https://172.17.0.8:2379' member list
b. 刪除 etcd3 節點:
etcdctl --ca-file /etc/ssl/etcd/ssl/ca.pem --cert-file /etc/ssl/etcd/ssl/node-k8s1.pem --key-file /etc/ssl/etcd/ssl/node-k8s1-key.pem --endpoints 'https://172.17.0.8:2379' member remove e1045a04cac35523
c. 添加 etcd3 節點:
etcdctl --ca-file /etc/ssl/etcd/ssl/ca.pem --cert-file /etc/ssl/etcd/ssl/node-k8s1.pem --key-file /etc/ssl/etcd/ssl/node-k8s1-key.pem --endpoints 'https://172.17.0.8:2379' member add etcd3 https://172.17.0.6:2380
d. 清空etcd3 節點數據
rm -rf /var/lib/etcd/*