CentOS 7.1上使用Systemd管理编译安装的MySQL 5.6

CentOS 7.1默认yum没有MySQL 5.6，稳健的方法是使用MySQL官网提供的源码自行编译安装。但是编译安装的MySQL 5.6的启动管理是基于

CentOS 7.1默认yum没有MySQL 5.6，稳健的方法是使用MySQL官网提供的源码自行编译安装。但是编译安装的MySQL 5.6的启动管理是基于CentOS 6.x的service管理方式，不是CentOS 7.x的Systemd的管理方式。MySQL为RHEL和CentOS提供了的MySQL 5.6的yum源，使用yum安装的MySQL是自带Systemd管理脚本文件的。

那么，如何用Systemd管理编译安装的MySQL呢？

首先看看yum安装的MySQL提供的Systemd管理脚本

$ cat /usr/lib/systemd/system/mysqld.service
#
# Simple MySQL systemd service file
#
# systemd supports lots of fancy features, look here (and linked docs) for a full list:
# 
#
# Note: this file ( /usr/lib/systemd/system/mysql.service )
# will be overwritten on package upgrade, please copy the file to
#
#  /etc/systemd/system/mysql.service
# 
# to make needed changes.
#
# systemd-delta can be used to check differences between the two mysql.service files.
#

[Unit]
Description=MySQL Community Server
After=network.target
After=syslog.target

[Install]
WantedBy=multi-user.target
Alias=mysql.service

[Service]
User=mysql
Group=mysql

# Execute pre and post scripts as root
PermissionsStartOnly=true

# Needed to create system tables etc.
ExecStartPre=/usr/bin/mysql-systemd-start pre

# Start main service
ExecStart=/usr/bin/mysqld_safe

# Don't signal startup success before a ping works
ExecStartPost=/usr/bin/mysql-systemd-start post

# Give up if ping don't get an answer
TimeoutSec=600

Restart=always
PrivateTmp=false

最后应该是这个样子

#
# Simple MySQL systemd service file
#
# systemd supports lots of fancy features, look here (and linked docs) for a full list:
# 
#
# Note: this file ( /usr/lib/systemd/system/mysql.service )
# will be overwritten on package upgrade, please copy the file to
#
#  /etc/systemd/system/mysql.service
# 
# to make needed changes.
#
# systemd-delta can be used to check differences between the two mysql.service files.
#

[Unit]
Description=MySQL Community Server
After=network.target
After=syslog.target

[Install]
WantedBy=multi-user.target
Alias=mysql.service

[Service]
User=mysql
Group=mysql

# Execute pre and post scripts as root
PermissionsStartOnly=true

# Needed to create system tables etc.
#ExecStartPre=/usr/bin/mysql-systemd-start pre

# Start main service
ExecStart=/usr/local/mysql/bin/mysqld_safe

# Don't signal startup success before a ping works
#ExecStartPost=/usr/bin/mysql-systemd-start post

# Give up if ping don't get an answer
TimeoutSec=600

Restart=always
PrivateTmp=false

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