mysql不能启动：Unit mysql.service failed to load: No such file or directory的解决办法

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本文介绍了一种在OpenSUSE13.1 x64环境下使用RPM包安装MySQL5.6.20过程中遇到的MySQL服务启动失败问题及其解决办法。通过启用服务并重新启动，最终成功解决了启动失败的问题。

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Failed to issue method call: Unit MySQL.service failed to load: No such file or directory的解决办法

作者：chszs，转载需注明。博客主页：http://blog.youkuaiyun.com/chszs

1、软件环境：

OpenSUSE 13.1 x64

MySQL 5.6.20 x64

2、采用RPM包安装MySQL 5.6.20

[python] view plain copy

# rpm -ivh MySQL-server-5.6.20-1.sles11.x86_64.rpm
# rpm -ivh MySQL-client-5.6.20-1.sles11.x86_64.rpm
# rpm -ivh MySQL-devel-5.6.20-1.sles11.x86_64.rpm
# rpm -ivh MySQL-shared-5.6.20-1.sles11.x86_64.rpm

3、查看MySQL服务

[javascript] view plain copy

# /etc/init.d/mysql status
MySQL is not running failed
mysql.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
Aug 22 15:42:26 173-168-58-139 systemd[1]: Stopped LSB: Start the MySQL database server.

可见，MySQL服务未启动。

4、启动MySQL服务

[javascript] view plain copy

# /etc/init.d/mysql start
redirecting to systemctl start mysql
Failed to issue method call: Unit mysql.service failed to load: No such file or directory.

报错，无法启动MySQL服务。

用systemctl方法

[javascript] view plain copy

# systemctl start mysql.service

仍然报如下错误
Failed to issue method call: Unit mysql.service failed to load: No such file or directory. See system logs and 'systemctl status mysql.service' for details.

5、解决方法

[javascript] view plain copy

# systemctl enable mysql.service

6、再次启动MySQL

[javascript] view plain copy

# systemctl start mysql
# ps -ef | grep mysql
root 27930 1 0 16:30 ? 00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/173-168-58-139.pid
mysql 28045 27930 0 16:30 ? 00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/173-168-58-139.err --pid-file=/var/lib/mysql/173-168-58-139.pid
root 28074 25545 0 16:30 pts/1 00:00:00 grep --color=auto mysql

可见，MySQL已经正常运行。