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如何在linux平臺(tái)卸載linux呢？這篇文章主要介紹了linux下卸載linux的方法，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下
如何在Linux下卸載MySQL數(shù)據(jù)庫呢？ 下面總結(jié)、整理了一下Linux平臺(tái)下卸載MySQL的方法。 MySQL的linux主要有三種方式：二進(jìn)制包安裝（Using Generic Binaries）、RPM包安裝、源碼安裝。對(duì)應(yīng)不同的安裝方式，卸載的步驟有些不同。文章中如有不足或不對(duì)的地方，敬請(qǐng)指出或補(bǔ)充！
RPM包安裝方式的MySQL卸載
1、檢查是否安裝了MySQL組件。
[root@DB-Server?init.d]#?rpm?-qa?|?grep?-i?mysql MySQL-devel-5.6.23-1.linux_glibc2.5 MySQL-client-5.6.23-1.linux_glibc2.5? MySQL-server-5.6.23-1.linux_glibc2.5
如上所示，說明安裝了MySQL 5.6.23這個(gè)版本的client、server、devel三個(gè)組件。
2、卸載前關(guān)閉MySQL服務(wù)
2.1 方法1
[root@DB-Server?init.d]#?service?mysql?status ?MySQL?running?(25673)[?OK?] [root@DB-Server?init.d]#?service?mysql?stop ?Shutting?down?MySQL..[?OK?] [root@DB-Server?init.d]#?service?mysql?status ?MySQL?is?not?running[FAILED]
2.2 方法2
[root@DB-Server?init.d]#?./mysql?status ?MySQL?running?(26215)[?OK?] [root@DB-Server?init.d]#?./mysql?stop ?Shutting?down?MySQL..[?OK?] [root@DB-Server?init.d]#?./mysql?status ?MySQL?is?not?running[FAILED] [root@DB-Server?init.d]#
[root@DB-Server?init.d]#?chkconfig?--list?|?grep?-i?mysql mysql?0:off?1:off?2:on?3:on?4:on?5:on?6:off? [root@DB-Server?init.d]#
3. 收集MySQL對(duì)應(yīng)的文件夾信息
[root@DB-Server?init.d]#?whereis?mysql mysql:?/usr/bin/mysql?/usr/include/mysql?/usr/share/mysql?/usr/share/man/man1/mysql.1.gz
最好實(shí)用find命令查看MySQL數(shù)據(jù)庫相關(guān)的文件，方便后面徹底linuxMySQL。
[root@DB-Server?init.d]#?find?/?-name?mysql /etc/rc.d/init.d/mysql /etc/logrotate.d/mysql /var/lock/subsys/mysql /var/lib/mysql /var/lib/mysql/mysql /usr/include/mysql /usr/include/mysql/mysql /usr/bin/mysql /usr/share/mysql /usr/lib64/mysql
4、卸載刪除MySQL各類組件
[root@DB-Server?init.d]#? [root@DB-Server?init.d]#?rpm?-ev?MySQL-devel-5.6.23-1.linux_glibc2.5 [root@DB-Server?init.d]#?rpm?-ev?MySQL-server-5.6.23-1.linux_glibc2.5 You?have?new?mail?in?/var/spool/mail/root [root@DB-Server?init.d]#?rpm?-ev?MySQL-client-5.6.23-1.linux_glibc2.5 [root@DB-Server?init.d]#
5、刪除MySQL對(duì)應(yīng)的文件夾
檢查各個(gè)MySQL文件夾是否清理刪除干凈。
[root@DB-Server?init.d]#?whereis?mysql mysql: [root@DB-Server?init.d]#?find?/?-name?mysql /var/lib/mysql /var/lib/mysql/mysql /usr/lib64/mysql [root@DB-Server?init.d]#?rm?-rf?/var/lib/mysql [root@DB-Server?init.d]#?rm?-rf?/var/lib/mysql/mysql [root@DB-Server?init.d]#?rm?-rf?/usr/lib64/mysql [root@DB-Server?init.d]#
6、刪除mysql用戶及用戶組
如果有必要，刪除mysql用戶以及mysql用戶組。
[root@DB-Server?~]#?more?/etc/passwd?|?grep?mysql mysql:x:101:501::/home/mysql:/bin/bash [root@DB-Server?~]#?more?/etc/shadow?|?grep?mysql mysql:!!:16496:::::: [root@DB-Server?~]#?more?/etc/group?|?grep?mysql mysql:x:501: [root@DB-Server?~]#?userdel?mysql [root@DB-Server?~]#?groupdel?mysql groupdel:?group?mysql?does?not?exist [root@DB-Server?~]#
7、確認(rèn)MySQL是否卸載刪除
[root@DB-Server?init.d]#?rpm?-qa?|?grep?-i?mysql
二進(jìn)制包/源碼安裝方式的MySQL卸載
如果是采用二進(jìn)制包安裝的MySQL，那么你用下面命令是找不到任何MySQL組件的。所以如果你不知道MySQL的安裝方式，千萬不要用下面命令來判別是否安裝了MySQL
[root@DB-Server?init.d]#?rpm?-qa?|?grep?-i?mysql
1、檢查MySQL服務(wù)并關(guān)閉服務(wù)進(jìn)程。
首先通過進(jìn)程查看是否有MySQL的服務(wù)的linux, 如下所示，MySQL服務(wù)是啟動(dòng)的。
[root@DB-Server?init.d]#?ps?-ef?|?grep?mysql root???4752?4302?0?22:55?pts/1??00:00:00?more?/etc/init.d/mysql.server root???7176???1?0?23:23?pts/1??00:00:00?/bin/sh?/usr/local/mysql/bin/mysqld_safe?--datadir=/usr/local/mysql/data?--pid-file=/usr/local/mysql/data/DB-Server.localdomain.pid mysql???7269?7176?15?23:23?pts/1??00:00:01?/usr/local/mysql/bin/mysqld?--basedir=/usr/local/mysql?--datadir=/usr/local/mysql/data?--plugin-dir=/usr/local/mysql/lib/plugin?--user=mysql?--log-error=/usr/local/mysql/data/DB-Server.localdomain.err?--pid-file=/usr/local/mysql/data/DB-Server.localdomain.pid root???7321?4302?0?23:23?pts/1??00:00:00?grep?mysql [root@DB-Server?init.d]#?/etc/init.d/mysql.server?status MySQL?running?(7269)[?OK?] [root@DB-Server?init.d]#?/etc/init.d/mysql.server?stop Shutting?down?MySQL..[?OK?] [root@DB-Server?init.d]#?/etc/init.d/mysql.server?status MySQL?is?not?running[FAILED] [root@DB-Server?init.d]#
2、查找MySQL的安裝目錄并徹底刪除
[root@DB-Server?init.d]#?whereis?mysql ?mysql:?/usr/local/mysql ?[root@DB-Server?init.d]#?find?/?-name?mysql ?/var/spool/mail/mysql ?/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/include/mysql ?/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/bin/mysql ?/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/data/mysql ?/usr/local/mysql
[root@DB-Server?init.d]#?rm?-rf?/usr/local/mysql-5.7.5-m15-linux-glibc2.5-x86_64/? [root@DB-Server?init.d]#?rm?-rf?/usr/local/? [root@DB-Server?init.d]#?rm?-rf?/var/spool/mail/mysql? [root@DB-Server?init.d]#
3、刪除一些linux配置文件一般有/etc/my.cnf 或/etc/init.d/mysql.server，視具體安裝配置情況而定。
4、刪除MySQL用戶以及用戶組
[root@DB-Server?~]#?id?mysql? uid=101(mysql)?gid=501(mysql)?groups=501(mysql)?context=root:system_r:unconfined_t:SystemLow-SystemHigh? [root@DB-Server?~]#?userdel?mysql
參考資料：Linux下徹底卸載mysql詳解
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