Centos7在线安装mysql5.7

    # 检查mariadb是否允许
    ps ajx |grep mariadb
    # 检查mysqld是否允许
    ps ajx |grep mysqld
    
    # 有则停止
    systemctl stop mysqld
    systemctl stop mariadb.service
    
    
    bash

    # 查看mariadb安装包
    rpm -qa | grep mariadb 
    # 查看mysql安装包
    rpm -qa | grep mysql   
    # 有则卸载
    yum remove 安装包名字
    
    
    bash

    rpm -ivh mysql57-community-release-el7.rpm
    
    
    bash

    ls /etc/yum.repos.d/ -l
    
    
    bash

    yum list | grep mysql
    
    
    bash

    yum install -y mysql-community-server
    
    
    bash

    rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2023
    
    
    bash

    vi /etc/my.cnf
    
    
    bash

    [mysqld]
    
    # 登录跳过密码验证配置
    #skip-grant-tables
    
    # 数据库建表存放目录，自定义修改
    # datadir=/var/lib/mysql
    datadir=/usr/hen/soft/mysql/data
    socket=/var/lib/mysql/mysql.sock
    # Disabling symbolic-links is recommended to prevent assorted security risks
    symbolic-links=0
    # Settings user and group are ignored when systemd is used.
    # If you need to run mysqld under a different user or group,
    # customize your systemd unit file for mariadb according to the
    # instructions in http://fedoraproject.org/wiki/Systemd
    
    [mysqld_safe]
    log-error=/usr/hen/soft/mysql/mysqld.log
    pid-file=/var/run/mariadb/mariadb.pid
    
    #
    # include all files from the config directory
    #
    
    # 设置编码格式
    character-set-server=utf8
    # 设置默认存储引擎设置为innodb
    default-storage-engine=innodb
    
    !includedir /etc/my.cnf.d
    
    
    bash
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    mysql -uroot -p
    Enter password: 直接回车
    
    
    bash

    # 刷新权限：
    flush privileges;
    # 修改密码
    alter user 'root'@'localhost' identified by '123456';
    
    
    bash

    GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
    
    
    bash

    ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
    
    
    bash

    # 设置
    set global validate_password_policy=LOW;
    
    
    bash