Question

我想在我的网络中与zookeeper一起实施Kafka，但我正面临Zookeeper的怪异问题。我环顾了Google，并意识到许多其他用户都报告了此类问题，但没有人为此发布任何适当的解决方案。

我当前的设置有3个不同的Zookeeper节点（32 GB内存专用盒）问题是，如果我杀死了动物园管理员领导者，那么其余的跟随者节点也会掉线，并且它们至少在接下来的15-20分钟内无法恢复。

我在Zookeeper日志中得到的只是“通知超时”而没有任何解释

这是我的zookeeper配置文件

tickTime=2000
initLimit=10
syncLimit=5
maxClientCnxns=100
maxSessionTimeout=50000
dataDir=/var/lib/zookeeper
clientPort=2181
autopurge.snapRetainCount=100
autopurge.purgeInterval=1
preAllocSize=131072
snapCount=3000000

server.1=zo1:2888:3888
server.2=zo2:2888:3888
server.3=zo3:2888:3888

在我的/ etc / hosts文件中，我已将zo1，zo2，zo3映射到其IP地址。

注意：我还通过将当前节点ip设置为0.0.0.0进行了测试，没有任何区别。

就在几分钟前，我对其进行了测试，但再次无法恢复。因为我有三个节点群集zo1，zo2和zo3。 zo3是领导者，zo1和zo2是关注者。在我杀死zo3节点之后。自动恢复大约需要13分钟。我在zo1和zo2中得到了以下日志。

登录zo1。

tail /var/lib/zookeeper/zookeeper.out -n 10000 | grep'QuorumPeer'

2019-01-02 10:25:50,848 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FollowerZooKeeperServer@140] - Shutting down
2019-01-02 10:25:50,848 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@505] - shutting down
2019-01-02 10:25:50,848 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FollowerRequestProcessor@107] - Shutting down
2019-01-02 10:25:50,848 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:CommitProcessor@184] - Shutting down
2019-01-02 10:25:50,848 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FinalRequestProcessor@402] - shutdown of request processor complete
2019-01-02 10:25:50,849 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:SyncRequestProcessor@208] - Shutting down
2019-01-02 10:25:50,849 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumPeer@865] - LOOKING
2019-01-02 10:25:50,850 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@818] - New election. My id =  1, proposed zxid=0x2d00035c8e
2019-01-02 10:25:51,057 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 400
2019-01-02 10:25:51,458 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 800
2019-01-02 10:25:52,259 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 1600
2019-01-02 10:25:53,859 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 3200
2019-01-02 10:25:57,060 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 6400
2019-01-02 10:26:03,461 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 12800
2019-01-02 10:26:16,262 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 25600
2019-01-02 10:26:41,862 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 51200
2019-01-02 10:27:33,063 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:28:33,065 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:29:33,066 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:30:33,066 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:31:33,067 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:32:33,068 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:33:33,069 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:34:33,069 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:35:33,070 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:36:33,071 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:37:33,071 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:38:33,072 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:39:33,073 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:40:33,074 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:41:33,075 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:42:33,076 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:43:33,076 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:43:33,082 [myid:1] - INFO  [WorkerSender[myid=1]:QuorumPeer$QuorumServer@167] - Resolved hostname: zo3 to address: zo3/144.76.xxx.xxx
2019-01-02 10:43:33,091 [myid:1] - INFO  [WorkerSender[myid=1]:QuorumPeer$QuorumServer@167] - Resolved hostname: zo3 to address: zo3/144.76.xxx.xxx
2019-01-02 10:43:33,290 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumPeer@935] - FOLLOWING
2019-01-02 10:43:33,290 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@173] - Created server with tickTime 2000 minSessionTimeout 4000 maxSessionTimeout 50000 datadir /var/lib/zookeeper/version-2 snapdir /var/lib/zookeeper/version-2
2019-01-02 10:43:33,291 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:Follower@64] - FOLLOWING - LEADER ELECTION TOOK - 1062441
2019-01-02 10:43:33,291 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumPeer$QuorumServer@167] - Resolved hostname: zo2 to address: zo2/88.198.35.34
2019-01-02 10:43:33,294 [myid:1] - WARN  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:Learner@237] - Unexpected exception, tries=0, connecting to zo2/88.198.35.34:2888
        at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:937)
2019-01-02 10:43:34,468 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:Learner@332] - Getting a diff from the leader 0x2d00035c8e
2019-01-02 10:43:35,120 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@687] - Established session 0x2680a49e3dc0013 with negotiated timeout 6000 for client /5.9.xxx.xxx:36664
2019-01-02 10:43:35,244 [myid:1] - INFO  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@687] - Established session 0x1680a49b6b90011 with negotiated timeout 30000 for client /5.9.xxx.xxx:36668
2019-01-02 10:43:35,625 [myid:1] - WARN  [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:Follower@118] - Got zxid 0x2e00000001 expected 0x1

来自节点zo2的日志，该节点后来成为领导者

2019-01-02 10:25:50,852 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:NIOServerCnxn@1044] - Closed socket connection for client /5.9.xxx.xxx:21218 which had sessionid 0x2680a49e3dc0012
2019-01-02 10:25:50,852 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FollowerZooKeeperServer@140] - Shutting down
2019-01-02 10:25:50,853 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@505] - shutting down
2019-01-02 10:25:50,853 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FollowerRequestProcessor@107] - Shutting down
2019-01-02 10:25:50,854 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:CommitProcessor@184] - Shutting down
2019-01-02 10:25:50,854 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FinalRequestProcessor@402] - shutdown of request processor complete
2019-01-02 10:25:50,856 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:SyncRequestProcessor@208] - Shutting down
2019-01-02 10:25:50,857 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:QuorumPeer@865] - LOOKING
2019-01-02 10:25:50,858 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@818] - New election. My id =  2, proposed zxid=0x2d00035c8e
2019-01-02 10:25:51,061 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 400
2019-01-02 10:25:51,462 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 800
2019-01-02 10:25:52,283 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 1600
2019-01-02 10:25:53,884 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 3200
2019-01-02 10:25:57,084 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 6400
2019-01-02 10:26:03,485 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 12800
2019-01-02 10:26:16,286 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 25600
2019-01-02 10:26:41,887 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 51200
2019-01-02 10:27:33,087 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:28:33,088 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:29:33,089 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:30:33,090 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:31:33,091 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:32:33,092 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:33:33,092 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:34:33,093 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:35:33,094 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:36:33,095 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:37:33,095 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:38:33,096 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:39:33,097 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:40:33,098 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:41:33,099 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:42:33,100 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 60000
2019-01-02 10:43:33,293 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:QuorumPeer@947] - LEADING
2019-01-02 10:43:33,299 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:Leader@62] - TCP NoDelay set to: true
2019-01-02 10:43:33,301 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@173] - Created server with tickTime 2000 minSessionTimeout 4000 maxSessionTimeout 50000 datadir /var/lib/zookeeper/version-2 snapdir /var/lib/zookeeper/version-2
2019-01-02 10:43:33,301 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:Leader@371] - LEADING - LEADER ELECTION TOOK - 1062443
2019-01-02 10:43:34,307 [myid:2] - INFO  [LearnerHandler-/144.76.120.143:64542:LearnerHandler@346] - Follower sid: 1 : info : org.apache.zookeeper.server.quorum.QuorumPeer$QuorumServer@33d2c290
2019-01-02 10:43:34,509 [myid:2] - INFO  [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:Leader@961] - Have quorum of supporters, sids: [ 1,2 ]; starting up and setting last processed zxid: 0x2e00000000

您可以看到，我得到的只是日志中的连续超时而没有任何解释。由于已经进行了一个多星期的测试，因此仍然无法找到任何解决方案。

如果有人能指出正确的方向，我将不胜感激。

谢谢

Answer 1

当群集大小为2时，不会进行任何选择。如果要运行HA Zookeeper群集，请将Zookeeper数量增加到5。此外，Zookeeper不需要32GB即可有效运行。

退房：

https://docs.confluent.io/current/zookeeper/deployment.html#multi-node-setup获取群集信息

和

https://docs.confluent.io/current/zookeeper/deployment.html#jvm用于JVM大小调整。

Answer 2

面对同一问题的任何人-原因是动物园管理员无所事事。如果Zookeeper节点由于节点之间没有任何活动（数据事务）而变得空闲，则内部Zookeeper节点将停止相互通信。如果任何Zookeeper节点发生故障，其他节点将不知道，直到它们在10到15分钟后进行定期ping。

动物园管理员问题-如果领导者被杀，则需要15分钟才能恢复

2 个答案: