etcd의 member확인

k8s의 DB성격인 etcd의 상태 점검시 확인할 수 있는 몇가지 포인트들

1. member list
   

   $>  /usr/local/bin/etcdctl.sh -w table member list
   +------+---------+---------+-----------+------------+
   |  ID  | TATUS | PEER ADDRS | CLIENT ADDRESS | IS LEARNER |
   +------+---------+---------+-----------+------------+
   | abcd |  3.4.13 |   11 MB |     true  |      false |
   | 1234 |  3.4.13 |   11 MB |     false |      false |
   | efgh |  3.4.13 |   11 MB |     false |      false |
   +------+---------+---------+-----------+------------+

   
   
2. endpoint (데이터 상태 크기 확인)
   

   $>  /usr/local/bin/etcdctl.sh -w table endpoint status --cluster=true
   +---------------------------+------+---------+---------+-----------+------------+
   |       ENDPOINT            |  ID  | VERSION | DB SIZE | IS LEADER | IS LEARNER |
   +---------------------------+------+---------+---------+-----------+------------+
   | https://192.168.0.10:2379 | abcd |  3.4.13 |   11 MB |     true  |      false |
   | https://192.168.0.11:2379 | 1234 |  3.4.13 |   11 MB |     false |      false |
   | https://192.168.0.12:2379 | efgh |  3.4.13 |   11 MB |     false |      false |
   +---------------------------+------+---------+---------+-----------+------------+