/tmp/hadoop-hadoop-namenode.pid: Permission denied
starting namenode, logging to /home/hadoop/hadoop-1.0.2/libexec/../logs/hadoop-hadoop-namenode-ubuntu118.out starting namenode, logging to /home/hadoop/hadoop-1.0.2/libexec/../logs/hadoop-hadoop-namenode-ubuntu118.out
/home/hadoop/hadoop-1.0.2/bin/hadoop-daemon.sh: line 136: /tmp/hadoop-hadoop-namenode.pid: Permission denied /home/hadoop/hadoop-1.0.2/bin/hadoop-daemon.sh: line 136: /tmp/hadoop-hadoop-namenode.pid: Permission denied
解决： 解决：
修改hadoop用户下tmp文件读写权限： 修改hadoop用户下tmp文件读写权限：
hadoop@ubuntu118:~$ chmod -R 777 tmp/ hadoop@ubuntu118:~$ chmod -R 777 tmp/
hadoop@ubuntu118:~$ chmod -R 777 tmp/
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