vim /usr/lib/systemd/system/mysql.service
----------
[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=/data/mysql/pid/mysqld.pid
# Disable service start and stop timeout logic of systemd for mysqld service.
TimeoutSec=0
# 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=/data/mysql/pid/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 = 5000
Restart=on-failure
RestartPreventExitStatus=1
PrivateTmp=false
----------
systemctl daemon-reload
#重新载入
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