Zookeeper错误4_Zookeeper启动时，bin/zkServer.sh: line 109: ./zookeeper.out: Permission denied STARTED错误

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本文记录了在启动Zookeeper过程中遇到的权限不足错误，并详细介绍了如何通过调整文件权限来解决这一问题，确保Zookeeper能够正常运行。

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启动Zookeeper过程中，一台虚拟机上出现如下的错误：

[hadoop@Slave2 zookeeper]$ bin/zkServer.sh start
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... bin/zkServer.sh: line 109: ./zookeeper.out: Permission denied
STARTED
[hadoop@Slave2 zookeeper]$

根据字面意思，在对zookeeper.out文件操作时，权限不够，解决方法是增加权限：

[root@Slave2 hadoop]# cd /usr/local/zookeeper/
[root@Slave2 zookeeper]# cd bin
[root@Slave2 bin]# ls
README.txt    zkCli.cmd  zkEnv.cmd  zkServer.cmd  zookeeper.out
zkCleanup.sh  zkCli.sh   zkEnv.sh   zkServer.sh
[root@Slave2 bin]# chmod a+xwr zookeeper.out 
[root@Slave2 bin]# ll
total 48
-rwxr-xr-x. 1 hadoop hadoop  238 Feb 20  2014 README.txt
-rwxr-xr-x. 1 hadoop hadoop 1937 Feb 20  2014 zkCleanup.sh
-rwxr-xr-x. 1 hadoop hadoop 1049 Feb 20  2014 zkCli.cmd
-rwxr-xr-x. 1 hadoop hadoop 1534 Feb 20  2014 zkCli.sh
-rwxr-xr-x. 1 hadoop hadoop 1333 Feb 20  2014 zkEnv.cmd
-rwxr-xr-x. 1 hadoop hadoop 2696 Feb 20  2014 zkEnv.sh
-rwxr-xr-x. 1 hadoop hadoop 1084 Feb 20  2014 zkServer.cmd
-rwxr-xr-x. 1 hadoop hadoop 5742 Feb 20  2014 zkServer.sh
-rwxrwxrwx. 1 hadoop hadoop 8606 Oct 28 05:18 zookeeper.out
[root@Slave2 bin]# ./zkServer.sh start
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@Slave2 bin]

在root用户下关闭，返回普通用户下继续启动：

[hadoop@Slave2 bin]$ ./zkServer.sh start
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

更改成功。