centos7上如何配置MySQL5.7的开机自启动

这篇文章主要为大家展示了“centos7上如何配置MySQL5.7的开机自启动”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“centos7免费主机域名上如何配置MySQL5.7的开机自启动”这篇文章吧。
centos7开始使得以往老版本系统服务的/etc/init.d的启动脚本的方式就此改变，在centos7中所有对服务的管理都集中到了systemctl当中。
systemctl是一个系统管理守护进程、工具和库的集合，用于取代以往的System V、service和chkconfig命令。

创建用于启动MySQL的配置文件
[root@localhost ~]# touch /usr/lib/systemd/system/mysqld.service
[root@localhost ~]# cd /usr/lib/systemd/system

编辑mysqld.service文件，加入如下内容:
[root@localhost system]# vi mysqld.service
[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
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
ExecStart=/opt/mysql-5.7.18/bin/mysqld –defaults-file=/etc/my.cnf
LimitNOFILE = 5000
保存退出

备注:ExecStart=/opt免费主机域名/mysql-5.7.18/bin/mysqld (此处请对应修改为MySQL程序所在的路径)
查找mysqld路径,例如:
[root@localhost system]# which mysqld
/opt/mysql-5.7.18/bin/mysqld

通过systemctl方式启动mysql5.7:
[root@localhost system]# systemctl start mysqld

检查MySQL运行状态:
[root@localhost system]# mysql -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 6
Server version: 5.7.18-log MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;’ or ‘h’ for help. Type ‘c’ to clear the current input statement.

mysql>
mysql>
mysql> s
————–
mysql Ver 14.14 Distrib 5.7.18, for linux-glibc2.5 (x86_64) using EditLine wrapper

Connection id: 6
Current database:
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ”
Using delimiter: ;
Server version: 5.7.18-log MySQL Community Server (GPL)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: latin1
Db characterset: latin1
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /tmp/mysql.sock
Uptime: 45 sec

Threads: 3 Questions: 6 Slow queries: 0 Opens: 108 Flush tables: 1 Open tables: 101 Queries per second avg: 0.133
————–

mysql>

关闭防火墙:
[root@localhost system]# systemctl stop firewalld.service
[root@localhost system]# systemctl disable firewalld.service
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

设置mysql的开机启动：
[root@localhost system]# systemctl enable mysqld
Created symlink from /etc/systemd/system/multi-user.target.wants/mysqld.service to /usr/lib/systemd/system/mysqld.service.
[root@localhost system]# systemctl list-unit-files | grep mysqld
mysqld.service enabled

取消mysql的开机自启动:
[root@localhost system]# systemctl disable mysqld
Removed symlink /etc/systemd/system/multi-user.target.wants/mysqld.service.
[root@localhost system]# systemctl list-unit-files | grep mysqld
mysqld.service disabled
以上是“centos7上如何配置MySQL5.7的开机自启动”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注云技术行业资讯频道！

相关推荐: Hive的基本概念

这篇文章主要介绍“Hive的基本概念”，在日常操作中，相信很多人在Hive的基本概念问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”Hive的基本概念”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！Hive简介什么是HiveHi…