Mysql-CentOS7单机安装

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在centos7单机安装mysql.

官网：https://www.mysql.com/cn/downloads/

检查MySql是否安装

方式1

[root@localhost toor]# yum list installed mysql* 
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.tuna.tsinghua.edu.cn
 * extras: mirrors.tuna.tsinghua.edu.cn
 * updates: mirrors.tuna.tsinghua.edu.cn
Installed Packages
mysql-community-client.x86_64             5.7.17-1.el7        @mysql57-community
mysql-community-common.x86_64             5.7.17-1.el7        @mysql57-community
mysql-community-libs.x86_64               5.7.17-1.el7        @mysql57-community
mysql-community-libs-compat.x86_64        5.7.17-1.el7        @mysql57-community
mysql-community-server.x86_64             5.7.17-1.el7        @mysql57-community
mysql57-community-release.noarch          el7-9               installed

方式2

[root@localhost toor]# rpm -qa|grep -i mysql
mysql-community-libs-compat-5.7.17-1.el7.x86_64
mysql-community-libs-5.7.17-1.el7.x86_64
mysql57-community-release-el7-9.noarch
mysql-community-client-5.7.17-1.el7.x86_64
mysql-community-server-5.7.17-1.el7.x86_64
mysql-community-common-5.7.17-1.el7.x86_64

安装

注：选择root用户操作

下载rpm包

选择下载目录后，打开终端，输入命令，如下：

1	# wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

安装mysql57-community-release-el7-7.noarch.下载rpm包

1	#rpm -ivh mysql57-community-release-el7-7.noarch.rpm

安装mysql

1	# yum install mysql-community-server

启动mysql服务

1	# service mysqld start

检查mysql状态

1	# service mysqld status

查看mysql版本

1	# mysql --version

验证mysql实例

输入命令，显示临时生成的密码：

1	# grep 'temporary password' /var/log/mysqld.log

设置root帐号（和系统root帐号不同）密码：

1	# mysql_secure_installation

连接到mysql server

1	# mysql -u root -p

使用yum更新mysql

1	# yum update mysql-server

开启远程访问端口

开启端口：

firewall-cmd --zone=public --add-port=3306/tcp --permanent

命令含义：

–zone #作用域

–add-port=3306/tcp #添加端口，格式为：端口/通讯协议

–permanent #永久生效，没有此参数重启后失效

重启防火墙:

firewall-cmd --reload

开机自动启动/取消

systemctl is-enabled iptables.service
systemctl is-enabled servicename.service #查询服务是否开机启动
systemctl enable mysqld.service #开机运行服务
systemctl disable mysqld.service #取消开机运行
systemctl start *.service #启动服务
systemctl stop *.service #停止服务
systemctl restart *.service #重启服务
systemctl reload *.service #重新加载服务配置文件
systemctl status *.service #查询服务运行状态
systemctl --failed #显示启动失败的服务