CentOS 7.6 安装与配置 MySql 5.7.40

Posted 2022-12-19 程序员大宝(coder-dabao)

1 通过wget下载mysql的rpm

# wget https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm

2 检查是否存在MySql的repo

# cd /etc/yum.repos.d/
# ls
CentOS-Base.repo  CentOS-Epel.repo

可以看到没有MySql的repo

3 安装MySql的repo，并查看是否安装成功

安装

# rpm -ivh /tmp/mysql57-community-release-el7-9.noarch.rpm

检查

[root@VM-12-7-centos yum.repos.d]# cd /etc/yum.repos.d/
[root@VM-12-7-centos yum.repos.d]# ll
总用量 16
-rw-r--r-- 1 root root  614 12月 25 2021 CentOS-Base.repo
-rw-r--r-- 1 root root  230 12月 25 2021 CentOS-Epel.repo
-rw-r--r-- 1 root root 1416 9月  12 2016 mysql-community.repo
-rw-r--r-- 1 root root 1440 9月  12 2016 mysql-community-source.repo
[root@VM-12-7-centos yum.repos.d]#

4 查看系统原来是否存在MySql包

[root@VM-12-7-centos yum.repos.d]# rpm -qa | grep mysql
mysql57-community-release-el7-9.noarch
[root@VM-12-7-centos yum.repos.d]#

可以看到只有我们刚才安装的包，没有其他的mysql包

5 安装MySql

忽略GPG检查。否则会报错。

# yum install -y mysql-server --nogpgcheck

6 修改数据目录

# mkdir -p /data/apps/mysql

vi /etc/my.cnf
将datadir的值从/var/lib/mysql变成自己的数据目录/data/apps/mysql

datadir=/data/apps/mysql

7 启动MySql服务并查看启动状态

7.1 启动

#  systemctl start mysqld

7.2 状态

# systemctl status mysqld

7.3 停止

# systemctl stop mysqld

7.4 开机启动

# systemctl enable mysqld
# systemctl daemon-reload

8 初始密码

# grep "password" /var/log/mysqld.log

9 登录与重置密码

登录

# mysql -uroot -p

重置密码

mysql> alter user 'root'@'localhost' identified by "HaiMy$2022****";
mysql> flush privileges;

10 开放访问权限

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'xxxxxx' WITH GRANT OPTION;
mysql> flush privileges;

11 查看版本

mysql> select version();
+-----------+
| version() |
+-----------+
| 5.7.40    |
+-----------+
1 row in set (0.00 sec)

mysql>

12 参考文档

1、《腾讯云轻量服务器Centos 7.6通过rpm安装MySql 5.7.37》：https://blog.csdn.net/cssweb_sh/article/details/123599846
2、《【腾讯云】CentOS7.6系统环境下安装并配置MySQL5.7，实现远程登录》：https://blog.csdn.net/weixin_43805939/article/details/127534346