1.最好在所有的master节点上执行
docker cp docker ps -a | awk ‘/k8s_etcd/{print $1}’:/usr/local/bin/etcdctl /usr/local/bin/etcdctl
2.配置etcd参数
代码语言：javascript复制#注意修改ETCD节点ip
cat >/etc/profile.d/etcd.sh<<'EOF'
ETCD_CERET_DIR=/etc/kubernetes/pki/etcd/
ETCD_CA_FILE=ca.crt
ETCD_KEY_FILE=healthcheck-client.key
ETCD_CERT_FILE=healthcheck-client.crt
ETCD_EP=https://192.168.31.100:2379,https://192.168.31.101:2379,https://192.168.31.102:2379
alias etcd_v2="etcdctl --cert-file ${ETCD_CERET_DIR}/${ETCD_CERT_FILE}
--key-file ${ETCD_CERET_DIR}/${ETCD_KEY_FILE}
--ca-file ${ETCD_CERET_DIR}/${ETCD_CA_FILE}
--endpoints $ETCD_EP"
alias etcd_v3="ETCDCTL_API=3
etcdctl
--cert ${ETCD_CERET_DIR}/${ETCD_CERT_FILE}
--key ${ETCD_CERET_DIR}/${ETCD_KEY_FILE}
--cacert ${ETCD_CERET_DIR}/${ETCD_CA_FILE}
--endpoints $ETCD_EP"
EOF3.手动加载一下环境变量，如果需要多个master查看，那么将脚本分发到多个节点即可
代码语言：javascript复制[root@k8s-01 ~]# . /etc/profile.d/etcd.sh
[root@k8s-01 ~]# etcd_v3 endpoint status --write-out=table #下面是输出
----------------------------- ------------------ --------- --------- ----------- ------------ ----------- ------------ -------------------- --------
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
----------------------------- ------------------ --------- --------- ----------- ------------ ----------- ------------ -------------------- --------
| https://192.168.31.100:2379 | c95fd6fdbb91a5 | 3.4.7 | 2.4 MB | false | false | 6 | 5656 | 5656 | |
| https://192.168.31.101:2379 | cfee13793e1cc392 | 3.4.7 | 2.3 MB | true | false | 6 | 5656 | 5656 | |
| https://192.168.31.102:2379 | c9662d268621483c | 3.4.7 | 2.3 MB | false | false | 6 | 5656 | 5656 | |
----------------------------- ------------------ --------- --------- ----------- ------------ ----------- ------------ -------------------- -------- 
