查看 etcd 集群成員列表

$ export ETCDCTL_API=3

$ alias etcdctl='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'

$ etcdctl member list
7afd54467ead876f, started, k8s-master02.ade.corp.lan, https://10.10.3.12:2380, https://10.10.3.12:2379, false
a5070a1e961013f0, started, k8s-master03.ade.corp.lan, https://10.10.3.13:2380, https://10.10.3.13:2379, false
bfd451309bf09004, started, k8s-master01.ade.corp.lan, https://10.10.3.11:2380, https://10.10.3.11:2379, false

查看etcd endpoint狀態(tài)

$ alias etcdctl='etcdctl --endpoints=https://10.10.3.11:2379,https://10.10.3.12:2379,https://10.10.3.13:2379 --cacert=/etc/kubernetes/pki/etcd/ca.crt --cert=/etc/kubernetes/pki/etcd/server.crt --key=/etc/kubernetes/pki/etcd/server.key'

$ etcdctl endpoint status --write-out=table
+-------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
|        ENDPOINT         |        ID        | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+-------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| https://10.10.3.11:2379 | bfd451309bf09004 |   3.4.3 |   22 MB |     false |      false |       589 |    7665839 |            7665832 |        |
| https://10.10.3.12:2379 | 7afd54467ead876f |   3.4.3 |   22 MB |     false |      false |       589 |    7665841 |            7665839 |        |
| https://10.10.3.13:2379 | a5070a1e961013f0 |   3.4.3 |   22 MB |      true |      false |       589 |    7665841 |            7665841 |        |
+-------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+

查看etcd endpoint 健康

$ alias etcdctl='etcdctl --endpoints=https://10.10.3.11:2379,https://10.10.3.12:2379,https://10.10.3.13:2379 --cacert=/etc/kubernetes/pki/etcd/ca.crt --cert=/etc/kubernetes/pki/etcd/server.crt --key=/etc/kubernetes/pki/etcd/server.key'

$ etcdctl  endpoint health
https://10.10.3.13:2379 is healthy: successfully committed proposal: took = 30.700722ms
https://10.10.3.12:2379 is healthy: successfully committed proposal: took = 31.431028ms
https://10.10.3.11:2379 is healthy: successfully committed proposal: took = 161.128702ms