9-hadoop-0.20 单节点安装
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[root@centerOsMaster home]# source /etc/profile
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b)
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[hadoop@centerOsMaster conf]$ vim hadoop-env.sh
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c)
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[hadoop@centerOsMaster conf]$ vim core-site.xml
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d)
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[hadoop@centerOsMaster conf]$ vi hdfs-site.xml
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e)
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[hadoop@centerOsMaster conf]$? vi mapred-site.xml?
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6)使用
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[hadoop@centerOsMaster conf]$ mkdir -p /hadoop/data/local
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[hadoop@centerOsMaster conf]$ mkdir -p /hadoop/data/name
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[hadoop@centerOsMaster conf]$ mkdir -p /hadoop/data/data
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[hadoop@centerOsMaster conf]$ mkdir -p /hadoop/data/tmp
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[hadoop@centerOsMaster bin]$ hadoop? namenode? -format
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12/12/08 23:47:19 INFO namenode.NameNode: STARTUP_MSG:
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/************************************************************
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STARTUP_MSG: Starting NameNode
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STARTUP_MSG:?? host = centerOsMaster/192.168.80.55
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STARTUP_MSG:?? args = [-format]
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STARTUP_MSG:?? version = 0.20.2
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STARTUP_MSG:?? build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r 911707; compiled by 'chrisdo' on Fri Feb 19 08:07:34 UTC 2010
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************************************************************/
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Re-format filesystem in /hadoop/data/name ? (Y or N) Y
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12/12/08 23:47:21 INFO namenode.FSNamesystem: fsOwner=hadoop,hadoop
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12/12/08 23:47:21 INFO namenode.FSNamesystem: supergroup=supergroup
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12/12/08 23:47:21 INFO namenode.FSNamesystem: isPermissionEnabled=true
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12/12/08 23:47:21 INFO common.Storage: Image file of size 96 saved in 0 seconds.
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12/12/08 23:47:21 INFO common.Storage: Storage directory /hadoop/data/name has been successfully formatted.
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12/12/08 23:47:21 INFO namenode.NameNode: SHUTDOWN_MSG:
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/************************************************************
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SHUTDOWN_MSG: Shutting down NameNode at centerOsMaster/192.168.80.55
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************************************************************/
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?这是是大写。是区分大小写的。
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?[hadoop@centerOsMaster bin]$ ./start-all.sh
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starting namenode, logging to /hadoop/hadoop-0.20.2/bin/../logs/hadoop-hadoop-namenode-centerOsMaster.out
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localhost: starting datanode, logging to /hadoop/hadoop-0.20.2/bin/../logs/hadoop-hadoop-datanode-centerOsMaster.out
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localhost: starting secondarynamenode, logging to /hadoop/hadoop-0.20.2/bin/../logs/hadoop-hadoop-secondarynamenode-centerOsMaster.out
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starting jobtracker, logging to /hadoop/hadoop-0.20.2/bin/../logs/hadoop-hadoop-jobtracker-centerOsMaster.out
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localhost: starting tasktracker, logging to /hadoop/hadoop-0.20.2/bin/../logs/hadoop-hadoop-tasktracker-centerOsMaster.out
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[hadoop@centerOsMaster bin]$
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总结：1）注意端口
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????????????? 2）注意版本
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???? ? 集群的安装请参考：http://pftzzg.iteye.com/blog/1910171
?? hadoop-0.20 请参考：http://pftzzg.iteye.com/admin/blogs/1911023
?????????????? 1.03? 请参考：http://pftzzg.iteye.com/admin/blogs/1910153
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