Kubernetes V1.19.13 - kubeapi 서버가 다른 etcd 데이터베이스에 연결할 수 없음

Question

Kubernetes 클러스터(마스터 3개, etcd 서버 데이터베이스 3개)를 에서 으로 1.18, v1.19.13ETCD를 3.4.13. API 서버가 안정적이지 않기 때문에 계속해서 다른 etcd 서버로 전환하세요. 이 클러스터가 제대로 작동하지 않기 때문입니다. CentOS Steam 8에서 실행되는 이러한 클러스터입니다. 이 클러스터는 업그레이드 전에 작동했지만 업그레이드 후에만 이 문제를 보았습니다.

이 문제를 해결하는 데 도움이 되셨나요? 이 버전에 알려진 문제가 있나요?

API 서버 로그

I0731 00:54:39.498953       1 client.go:360] parsed scheme: "passthrough"
I0731 00:54:39.499025       1 passthrough.go:48] ccResolverWrapper: sending update to cc: {[{https://0.0.0.02:2379  <nil> 0 <nil>}] <nil> <nil>}
I0731 00:54:39.499035       1 clientconn.go:948] ClientConn switching balancer to "pick_first"
I0731 00:54:40.241615       1 client.go:360] parsed scheme: "passthrough"
I0731 00:54:40.241681       1 passthrough.go:48] ccResolverWrapper: sending update to cc: {[{https://0.0.0.01:2379  <nil> 0 <nil>}] <nil> <nil>}
I0731 00:54:40.241691       1 clientconn.go:948] ClientConn switching balancer to "pick_first"
I0731 00:54:45.348969       1 client.go:360] parsed scheme: "passthrough"
I0731 00:54:45.349030       1 passthrough.go:48] ccResolverWrapper: sending update to cc: {[{https://0.0.0.03:2379  <nil> 0 <nil>}] <nil> <nil>}
I0731 00:54:45.349040       1 clientconn.go:948] ClientConn switching balancer to "pick_first"
I0731 00:55:16.460379       1 client.go:360] parsed scheme: "passthrough"
I0731 00:55:16.460428       1 passthrough.go:48] ccResolverWrapper: sending update to cc: {[{https://0.0.0.01:2379  <nil> 0 <nil>}] <nil> <nil>}
I0731 00:55:16.460439       1 clientconn.go:948] ClientConn switching balancer to "pick_first"
I0731 00:55:17.461906       1 client.go:360] parsed scheme: "passthrough"

etcd는 건강해 보여요

# /opt/bin/etcdctl.sh   version
etcdctl version: 3.4.13
API version: 3.4

 /opt/bin/etcdctl.sh  endpoint health
127.0.0.1:2379 is healthy: successfully committed proposal: took = 9.739533ms



# /opt/bin/etcdctl.sh  check perf
 60 / 60 Boooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo! 100.00% 1m0s
PASS: Throughput is 150 writes/s
PASS: Slowest request took 0.042491s
PASS: Stddev is 0.001743s
PASS

# /opt/bin/etcdctl.sh  endpoint status --cluster -w table
+----------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
|          ENDPOINT          |        ID        | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
+----------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| https://0.0.0.02:2379 | 15cd65a732ebd5d8 |  3.4.13 |   26 MB |     false |      false |      9305 |   19813854 |           19813854 |        |
| https://0.0.0.03:2379 | add66a254676e690 |  3.4.13 |   26 MB |      true |      false |      9305 |   19813854 |           19813854 |        |
| https://0.0.0.01:2379 | e2811ed02ce71623 |  3.4.13 |   26 MB |     false |      false |      9305 |   19813854 |           19813854 |        |
+----------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+