apache-zookeeper - 动物园管理员问题 - 如果领导者被杀，需要 15 分钟才能恢复-6ren

apache-zookeeper - 动物园管理员问题 - 如果领导者被杀，需要 15 分钟才能恢复

转载作者：行者123 更新时间：2023-12-03 18:01:33

我正在尝试在我的网络中使用 zookeeper 实现 Kafka，但我正面临一个关于 zookeeper 的奇怪问题。我环顾了谷歌并意识到许多其他用户报告了这样的问题，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 ram 专用框)
问题是，如果我杀死了 zookeeper 领导者，剩余的跟随者节点也会关闭，并且它们至少在接下来的 15-20 分钟内不会恢复。

我在动物园管理员日志中得到的只是“通知超时”，没有任何解释

这是我的动物园管理员配置文件

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 映射到它们的 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，它没有任何区别。

就在几分钟前，我对其进行了测试，但它再次未能恢复。
因为我有三个节点集群 zo1 、 zo2 和 zo3 。 zo3 是领导者，zo1 和 zo2 是追随者。在我杀死 zo3 节点之后。大约需要 13 分钟才能自动恢复。我在 zo1 和 zo2 中得到以下日志。

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

正如你所看到的，我得到的只是日志中的连续超时，没有任何解释。
一个多星期以来一直在测试它仍然找不到任何解决方案。

如果有人能指出我正确的方向，我将不胜感激。

谢谢

最佳答案

当集群大小为 2 时，不会发生选举。如果您打算运行一个 HA Zookeeper 集群，请将您的 Zookeeper 数量增加到 5。此外，Zookeeper 不需要 32GB 来有效运行。

查看:

https://docs.confluent.io/current/zookeeper/deployment.html#multi-node-setup集群信息

和

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

关于apache-zookeeper - 动物园管理员问题 - 如果领导者被杀，需要 15 分钟才能恢复，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54005488/

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apache-zookeeper - 动物园管理员问题 - 如果领导者被杀，需要 15 分钟才能恢复