centos7.2 將mysql添加到服務中

手動安裝的mysql是不會自動添加到系統服務中的。如果需要配置開機啓動，最好是將mysql配置成系統服務，也便於管理。

確定mysql運行時的pid文件位置

1、先去mysql安裝目錄啓動mysql

[root@host01 mysql]# cd /usr/local/mysql/support-files/
[root@host01 support-files]# pwd
/usr/local/mysql/support-files
[root@host01 support-files]# ./mysql.server start
Starting MySQL. SUCCESS! 
[root@host01 support-files]# 

2、查看mysql進程，找到【–pid-file】對應的值，然後可以停掉mysql

[root@host01 support-files]# ps -ef | grep mysql
root       5877      1  0 10:32 pts/0    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/host01.pid
mysql      6029   5877  1 10:32 pts/0    00:00:00 /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=/var/log/mariadb/mariadb.log --pid-file=/usr/local/mysql/data/host01.pid --socket=/var/lib/mysql/mysql.sock
root       6059   3035  0 10:33 pts/0    00:00:00 grep --color=auto mysql
[root@host01 support-files]# 
[root@host01 support-files]# ./mysql.server stop
Shutting down MySQL.. SUCCESS! 
[root@host01 support-files]#

添加mysql服務

1、在/usr/lib/systemd/system目錄下創建【mysql.service】內容如下，注意路徑可能有變化，根據實際情況寫，PIDFile就是上面拿到的路徑文件名

[Unit]
Description=Mysql
After=syslog.target network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/usr/local/mysql/data/host01.pid
ExecStart=/usr/local/mysql/support-files/mysql.server start
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=false

[Install]
WantedBy=multi-user.target

2、重啓systemctl，讓mysql.service生效

[root@host01 support-files]# systemctl daemon-reload

3、測試通過service方式啓動mysql

[root@host01 support-files]# ps -ef |grep mysql
root       6105   3662  0 10:42 pts/2    00:00:00 grep --color=auto mysql
[root@host01 support-files]# systemctl start mysql
[root@host01 support-files]# ps -ef |grep mysql
root       6119      1  1 10:42 ?        00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/host01.pid
mysql      6272   6119 10 10:42 ?        00:00:00 /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=/var/log/mariadb/mariadb.log --pid-file=/usr/local/mysql/data/host01.pid --socket=/var/lib/mysql/mysql.sock
root       6302   3662  0 10:42 pts/2    00:00:00 grep --color=auto mysql
[root@host01 support-files]# 

4、mysql服務相關命令

將mysql設置爲開機啓動
systemctl enable mysql
將mysql設置爲開機不啓動
systemctl disable mysql
啓動mysql
systemctl start mysql
關閉mysql
systemctl stop mysql
重啓mysql
systemctl restart mysql