hbase 6000 端口问题处理

89 阅读 0 评论 59 点赞

我是靠谱客的博主清脆早晨，最近开发中收集的这篇文章主要介绍hbase 6000 端口问题处理，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

单台master的配置

说明：单机配置后60000 端口是不启动的

hbase.master

master:60000

这是我们通常配置的，这样就定义了master是的ip和端口。

但是当我们需要配置多台master进行，我们只需要提供端口，因为选择真正的master的事情会又zookeeper去处理。

多台master的配置

hbase.master.port

60000

将这个配置cp到其他备份master的服务器上。

假设现在架构

A：master、 zookeeper、HRegionServer

B：backup-master、 zookeeper、 HRegionServer

在A上直接启动hbase-start.sh

在B上启动 hbase-daemon.sh start master

这样我们在A和B上都启动了master，不用担心同时启动了2个，因为只有在A的master宕掉后， zookeeper才会切换B的master为主。

我们看下端口

A为主

tcp 0 0 :::60000 master进程端口

tcp 0 0 :::60010 masterweb后台端口

B为从

tcp 0 0 :::60000 master进程端口

这里虽然B已经启动master，但是 zookeeper已经判断网络中已经存在存活的master，所以分配B为从。

我们现在宕掉A的master，来看看 zookeeper是如何工作的。

zookeeper log：

2012-09-07 14:56:53,073 WARN org.apache.zookeeper.server.NIOServerCnxn: caught end of stream exception

EndOfStreamException: Unable to read additional data from client sessionid 0x1399f8281420000, likely client has closed socket

at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:220)

at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:224)

at java.lang.Thread.run(Thread.java:662)

2012-09-07 14:56:53,074 INFO org.apache.zookeeper.server.NIOServerCnxn: Closed socket connection for client /192.168.1.149:56188 which had sessionid 0x1399f8281420000

2012-09-07 14:57:54,002 INFO org.apache.zookeeper.server.ZooKeeperServer: Expiring session 0x399f76c05b0003, timeout of 180000ms exceeded

2012-09-07 14:57:54,002 INFO org.apache.zookeeper.server.ZooKeeperServer: Expiring session 0x399f76c05b0005, timeout of 180000ms exceeded

2012-09-07 14:57:54,002 INFO org.apache.zookeeper.server.PrepRequestProcessor: Processed session termination for sessionid: 0x399f76c05b0003

2012-09-07 14:57:54,002 INFO org.apache.zookeeper.server.PrepRequestProcessor: Processed session termination for sessionid: 0x399f76c05b0005

2012-09-07 14:59:18,002 INFO org.apache.zookeeper.server.ZooKeeperServer: Expiring session 0x399f8287a20002, timeout of 180000ms exceeded

2012-09-07 14:59:18,002 INFO org.apache.zookeeper.server.PrepRequestProcessor: Processed session termination for sessionid: 0x399f8287a20002

2012-09-07 14:59:23,679 INFO org.apache.zookeeper.server.NIOServerCnxnFactory: Accepted socket connection from /192.168.1.253:34507

2012-09-07 14:59:23,680 INFO org.apache.zookeeper.server.ZooKeeperServer: Client attempting to establish new session at /192.168.1.253:34507

2012-09-07 14:59:23,690 INFO org.apache.zookeeper.server.ZooKeeperServer: Established session 0x1399f8281420004 with negotiated timeout 180000 for client /192.168.1.253:34507

2012-09-07 14:59:24,002 INFO org.apache.zookeeper.server.ZooKeeperServer: Expiring session 0x1399f8281420000, timeout of 180000ms exceeded

2012-09-07 14:59:24,002 INFO org.apache.zookeeper.server.PrepRequestProcessor: Processed session termination for sessionid: 0x1399f8281420000

当B切换成真master时，同时开启端口

tcp 0 0 :::60010

这时，B的master已经接管工作。