本文主要介绍ETCD ClientV3的操作
查看集群状态（如果单机的可以不用指定ENDPOINTS，如果是集群的话，通过分号的形式加到ENDPOINTS后面）
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| [root@dajiahao03 etcd]# export ENDPOINTS="172.27.143.50:2379"
[root@dajiahao03 etcd]# ./etcdctl --write-out=table --endpoints=$ENDPOINTS endpoint status
+--------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+--------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| 172.27.143.50:2379 | 8e9e05c52164694d | 3.4.4 | 20 kB | true | false | 3 | 13 | 13 | |
+--------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
|
查看集群成员
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| [root@dajiahao03 etcd]# ./etcdctl --write-out=table --endpoints=$ENDPOINTS member list
+------------------+---------+---------+-----------------------+---------------------+------------+
| ID | STATUS | NAME | PEER ADDRS | CLIENT ADDRS | IS LEARNER |
+------------------+---------+---------+-----------------------+---------------------+------------+
| 8e9e05c52164694d | started | default | http://localhost:2380 | http://0.0.0.0:2379 | false |
+------------------+---------+---------+-----------------------+---------------------+------------+
|
删除集群成员
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| MEMBER_ID=8e9e05c52164694d
etcdctl --endpoints=$ENDPOINTS member remove ${MEMBER_ID}
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添加成员
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| NEW_ETCD_NAME="new_etcd"
NEW_ETCD_HOST="172.27.140.172"
./etcdctl --endpoints=$ENDPOINTS member add ${NEW_ETCD_NAME} --peer-urls=http://${NEW_ETCD_HOST}:2380
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