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Mysql修改datadir導(dǎo)致無法啟動問題解決方法

更新時間：2015年02月13日 09:49:10 投稿：junjie

這篇文章主要介紹了Mysql修改datadir導(dǎo)致無法啟動問題解決方法,本文原因是SELINUX導(dǎo)致,用關(guān)閉SELINUX的方法解決了這個問題,需要的朋友可以參考下

centos6.2，停止mysqld然后修改/etc/my.cnf datadir的位置，啟動mysqld提示FAILED，查看日志

120609 11:31:31 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
120609 11:35:12 mysqld_safe Starting mysqld daemon with databases from /mnt/hgfs/mysql_data
120609 11:35:13 [Warning] Can't create test file /mnt/hgfs/mysql_data/data.lower-test
120609 11:35:13 [Warning] Can't create test file /mnt/hgfs/mysql_data/data.lower-test
/usr/libexec/mysqld: Can't change dir to '/mnt/hgfs/mysql_data/' (Errcode: 13)
120609 11:35:13 [ERROR] Aborting

120609 11:35:13 [Note] /usr/libexec/mysqld: Shutdown complete

120609 11:35:13 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

新的datadir路徑確實沒問題，而且目錄和目錄下所有文件都是777權(quán)限，上層目錄也有rx權(quán)限，只不過datadir和下屬文件owner都是root（因為我用虛擬機掛載的windows的文件系統(tǒng)）。后來想到應(yīng)該是selinux搞的鬼，設(shè)置為permissive模式之后正常啟動mysqld。

復(fù)制代碼代碼如下:

[root@data selinux]# getenforce

Enforcing

[root@data selinux]# setenforce 0

[root@data selinux]# getenforce

Permissive

setenforce 1 設(shè)置SELinux 成為enforcing模式
setenforce 0 設(shè)置SELinux 成為permissive模式

徹底關(guān)閉，vi /etc/selinux/config 修改 SELINUX=disabled

復(fù)制代碼代碼如下:

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

#     enforcing - SELinux security policy is enforced.

#     permissive - SELinux prints warnings instead of enforcing.

#     disabled - No SELinux policy is loaded.

SELINUX=disabled

# SELINUXTYPE= can take one of these two values:

#     targeted - Targeted processes are protected,

#     mls - Multi Level Security protection.

SELINUXTYPE=targeted

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