k8s之ETCD常用命令

export ETCDCTL_API=3
查看所有数据
etcdctl --endpoints 127.0.0.1:2379  --cert="/etc/kubernetes/pki/etcd/server.crt"  --key="/etc/kubernetes/pki/etcd/server.key"  --cacert="/etc/kubernetes/pki/etcd/ca.crt" get / --prefix --keys-only

查看健康状态

etcdctl --endpoints 127.0.0.1:2379  --cert="/etc/kubernetes/pki/etcd/server.crt"  --key="/etc/kubernetes/pki/etcd/server.key"  --cacert="/etc/kubernetes/pki/etcd/ca.crt" endpoint health


etcdctl --endpoints 127.0.0.1:2379  --cert="/etc/kubernetes/pki/etcd/server.crt"  --key="/etc/kubernetes/pki/etcd/server.key"  --cacert="/etc/kubernetes/pki/etcd/ca.crt" endpoint status --cluster -w table

打快照

etcdctl  --endpoints="https://127.0.0.1:2379"  \
--cacert=/etc/kubernetes/pki/etcd/ca.crt  \
--cert=/etc/kubernetes/pki/etcd/server.crt \
--key=/etc/kubernetes/pki/etcd/server.key  \
snapshot save  etcd3.db

恢复快照

etcdctl  --endpoints="https://127.0.0.1:2379" \
--cacert=/etc/kubernetes/pki/etcd/ca.crt \
--cert=/etc/kubernetes/pki/etcd/server.crt \
--key=/etc/kubernetes/pki/etcd/server.key \
snapshot restore etcd3.db
本地会产生一个etcd的文件,拷贝过去etcd目录
\cp -rvfp member/ /var/lib/etcd/
重启kubetet
systemctl restart kubelet