无法解决Kubernetes服务的地址

Question

我已经安装了kafka 单节点使用 confluent 。 kafka pod中存在错误：

[WARN] 2022-04-26 14:29:47,008 [main-SendThread(zookeeper.confluent.svc.cluster.local:2181)] org.apache.zookeeper.ClientCnxn run - Session 0x0 for sever zookeeper.confluent.svc.cluster.local:2181, Closing socket connection. Attempting reconnect except it is a SessionExpiredException.
java.lang.IllegalArgumentException: Unable to canonicalize address zookeeper.confluent.svc.cluster.local:2181 because it's not resolvable
        at org.apache.zookeeper.SaslServerPrincipal.getServerPrincipal(SaslServerPrincipal.java:78)
        at org.apache.zookeeper.SaslServerPrincipal.getServerPrincipal(SaslServerPrincipal.java:41)
        at org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1161)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1210)
[INFO] 2022-04-26 14:29:47,273 [main] kafka.zookeeper.ZooKeeperClient info - [ZooKeeperClient Kafka server] Closing.
[ERROR] 2022-04-26 14:29:48,112 [main-SendThread(zookeeper.confluent.svc.cluster.local:2181)] org.apache.zookeeper.client.StaticHostProvider resolve - Unable to resolve address: zookeeper.confluent.svc.cluster.local:2181
java.net.UnknownHostException: zookeeper.confluent.svc.cluster.local

错误消息：

Unable to canonicalize address zookeeper.confluent.svc.cluster.local:2181 because it's not resolvable
Unable to resolve address: zookeeper.confluent.svc.cluster.local:2181

我检查了我的zookeper ...它很好，而且没有问题。另外，使用dnsutils检查DNS：

$ kubectl -n default exec -it dnsutils -- nslookup zookeeper.confluent.svc.cluster.local

Server:         10.96.0.10
Address:        10.96.0.10#53

Name:   zookeeper.confluent.svc.cluster.local
Address: 192.168.0.111

我该怎么办？这是与K8相关的问题吗？

Answer 1

这发生在我身上，但是在Docker-Compose项目上，

最终，我发现服务器上没有剩下的空间会引起此问题。
清洁一些空间，然后奏效。