我正在尝试从ambari启动hbase主机。
它无法启动，因为它无法连接到Zookeper服务器。
Ambari将所有zookeper服务器(3个节点)标记为正在运行。
运行Zookeper服务器应用程序的应用程序服务器(tomcat®)运行良好；至少有一个服务在指定端口上监听。
但是该应用程序无法连接到其他节点，并且似乎无法启动。
Zookeeper服务器日志上的错误消息ZooKeeperServer not running和客户端上的zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket都关闭了所有连接。
这是这些节点的zookeper服务器日志输出(所有节点的日志相同，只有节点名称更改):
2016-03-31 16:15:34,550 - INFO [main:QuorumPeerConfig@103] - Reading configuration from: /usr/hdp/current/zookeeper-server/conf/zoo.cfg
2016-03-31 16:15:34,553 - INFO [main:QuorumPeerConfig@338] - Defaulting to majority quorums
2016-03-31 16:15:34,557 - INFO [main:DatadirCleanupManager@78] - autopurge.snapRetainCount set to 30
2016-03-31 16:15:34,557 - INFO [main:DatadirCleanupManager@79] - autopurge.purgeInterval set to 24
2016-03-31 16:15:34,558 - INFO [PurgeTask:DatadirCleanupManager$PurgeTask@138] - Purge task started.
2016-03-31 16:15:34,565 - INFO [PurgeTask:DatadirCleanupManager$PurgeTask@144] - Purge task completed.
2016-03-31 16:15:34,566 - INFO [main:QuorumPeerMain@127] - Starting quorum peer
2016-03-31 16:15:34,573 - INFO [main:NIOServerCnxnFactory@94] - binding to port 0.0.0.0/0.0.0.0:2181
2016-03-31 16:15:34,582 - INFO [main:QuorumPeer@992] - tickTime set to 2000
2016-03-31 16:15:34,582 - INFO [main:QuorumPeer@1012] - minSessionTimeout set to -1
2016-03-31 16:15:34,582 - INFO [main:QuorumPeer@1023] - maxSessionTimeout set to -1
2016-03-31 16:15:34,582 - INFO [main:QuorumPeer@1038] - initLimit set to 10
2016-03-31 16:15:34,598 - INFO [Thread-2:QuorumCnxManager$Listener@506] - My election bind port: sg1.imatiasl.lan/127.0.0.1:3888
2016-03-31 16:15:34,607 - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumPeer@747] - LOOKING
2016-03-31 16:15:34,608 - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@815] - New election. My id = 1, proposed zxid=0x0
2016-03-31 16:15:34,609 - INFO [WorkerReceiver[myid=1]:FastLeaderElection@597] - Notification: 1 (message format version), 1 (n.leader), 0x0 (n.zxid), 0x1 (
n.round), LOOKING (n.state), 1 (n.sid), 0x0 (n.peerEpoch) LOOKING (my state)
2016-03-31 16:15:34,612 - WARN [WorkerSender[myid=1]:QuorumCnxManager@383] - Cannot open channel to 2 at election address sg2.imatiasl.lan/10.7.0.93:3888
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:341)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:449)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:430)
at java.lang.Thread.run(Thread.java:745)
2016-03-31 16:15:34,614 - WARN [WorkerSender[myid=1]:QuorumCnxManager@383] - Cannot open channel to 3 at election address sg3.imatiasl.lan/10.7.0.94:3888
java.net.ConnectException: Conexión rehusada
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:341)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:449)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:430)
at java.lang.Thread.run(Thread.java:745)
2016-03-31 16:15:34,812 - WARN [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@383] - Cannot open channel to 2 at election address sg2.imatiasl.la
n/10.7.0.93:3888
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:404)
at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:840)
at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:795)
2016-03-31 16:15:34,813 - WARN [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@383] - Cannot open channel to 3 at election address sg3.imatiasl.la
n/10.7.0.94:3888
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:404)
at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:840)
at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:795)
2016-03-31 16:15:34,813 - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@849] - Notification time out: 400
当客户端尝试连接时:
2016-03-31 16:15:35,086 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.7.0.93:55914
2016-03-31 16:15:35,130 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@362] - Exception causing close of session 0x0 due to java.io.IOExcep
tion: ZooKeeperServer not running
2016-03-31 16:15:35,130 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007] - Closed socket connection for client /10.7.0.93:55914 (no ses
sion established for client)
等等...
有想法该怎么解决这个吗？
最佳答案
您的选举端口已绑定(bind)到所有节点的sgX.imatiasl.lan/127.0.0.1:3888上，因此，当客户端尝试连接到sgY.imatiasl.lan/10.7.0.93:3888时，它将失败。
选择端口应绑定(bind)到0.0.0.0:3888或每个节点的实际IP，但是由于某些原因，它们已解析为127.0.0.1。您可以使用netstat -patun检查每个节点中的IP:port来确认这一点。
可能您对/etc/hosts有一些问题。
看看:https://unix.stackexchange.com/questions/240506/zookeeper-dns-name-problems-with-leader-elections-when-migrating-from-windows-to