systemctl 配置mysql 开机启动

在centos 7 环境下对服务的管理已经不再用service 命令了，而是改为systemctl 命令来管理服务.

一、创建systemctl 的对mysql服务的配置文件：

touch /usr/lib/systemd/system/mysql.service

# 注意systemctl 中规定、服务的配置文件要以.service 为后缀

[Unit]

Description=MySQL Server

Documentation=man:mysqld()

Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html

After=network.target

After=syslog.target

[Install]

WantedBy=multi-user.target

[Service]

User=mysql

Group=mysql

PIDFile=/usr/local/mysql/data/mysqld.pid

# Disable service start and stop timeout logic of systemd for mysqld service.

TimeoutSec=

# Execute pre and post scripts as root

PermissionsStartOnly=true

# Needed to create system tables

#ExecStartPre=/usr/bin/mysqld_pre_systemd

# Start main service

ExecStart=/usr/local/mysql/bin/mysqld --daemonize --pid-file=/usr/local/mysql/data/mysqld.pid

#注意这里要加上 --daemonize

# Use this to switch malloc implementation

#EnvironmentFile=-/etc/sysconfig/mysql

# Sets open_files_limit

LimitNOFILE =

Restart=on-failure

RestartPreventExitStatus=

PrivateTmp=false

二、配置开机启动：

[root@workstudio system]# systemctl enable mysql

Created symlink from /etc/systemd/system/multi-user.target.wants/mysql.service to /usr/lib/systemd/system/mysql.service.

[root@workstudio system]# 

三、启动mysql服务：

[root@workstudio system]# systemctl start mysql

[root@workstudio system]#

[root@workstudio system]# ps -ef | grep mysql

mysql              : ?        :: /usr/local/mysql/bin/mysqld --daemonize --pid-file=/usr/local/mysql/data/mysqld.pid

root             : pts/    :: grep --color=auto mysql

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