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  • mysql5.7.22在centos7.5下的安装

    1、下载,解压

    把下载的文件放到 /app/programs/目录下

    tar -zxvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

    地址:https://dev.mysql.com/downloads/mysql/

    2、建目录
    /usr/local/mysql

    3、将解压文件复制到新建目录

    cp -r mysql-5.7.22-linux-glibc2.12-x86_64/ /usr/local/mysql/

    4、创建用户组和用户
    groupadd mysql
    useradd -r -g mysql mysql

    5、创建data目录
    cd /usr/loca/mysql
    mkdir data
    6、修改目录权限
    cd /usr/local/mysql
    chown -R mysql:mysql ./
    7、初始化
    ./mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/
    注意生成的密码:HyjrkTcs8d>4

    8、配置my.cnf

    [mysqld]
    basedir=/usr/local/mysql
    datadir=/usr/local/mysql/data
    socket=/tmp/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/local/mysql/mysqld.log
    pid-file=/usr/local/mysql/data/mysqld.pid
    
    #
    # include all files from the config directory
    #
    !includedir /etc/my.cnf.d

    9、启动
    cd /usr/local/mysql/bin
    ./mysqld_safe --user=mysql &

    10、登录修改密码 mysql -uroot -p 上面初始化时的密码
    alter user 'root'@'localhost' identified by 'root';
    GRANT ALL PRIVILEGES ON *.* TO 'root1'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION; #授权新用户
    flush privileges; #刷新权限
    11、设置开机启动
    cd /usr/local/mysql/support-files/

    cp mysql.server /etc/init.d/mysql

    vi /etc/init.d/mysql

    将mysql目录填上:

    basedir=/usr/local/mysql/

    datadir=/usr/local/mysql/data/

    授权:chmod +x /etc/init.d/mysql

    设为开机启动:chkconfig --add mysql


    12、service启动和关闭
    重启服务:service mysql restart

    停止服务:service mysql stop

    启动服务:service mysql start

    查看服务:service mysql status

    13、mysql命令 在任意目录执行

     ln -s /usr/local/mysql/bin/mysql /usr/bin/

    问题:

    1、遇到mysql进程杀不死的情况

      杀不死的情况是因为用守护线程起的服务,即通过mysqld_safe启动的。可以通过mysql -uroot -p先登录进去,然后执行 shutdown命令。退出mysql窗口,重新启动服务:service mysql start

    2、mysql.sock的问题

      安装后,用root登录时提示‘/tmp/mysql.sock’,

      解决1: /etc/my.cnf中 配置成:socket=/var/lib/mysql/mysql.sock,同时建立软链:ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock

        解决2:在my.cnf中,增加配置,如下:

    [mysql]
    socket=/var/lib/mysql/mysql.sock

     3、阿里云服务器mysql

      如果是在阿里云服务器安装的mysql,外部访问的时候,会提示连不上,需要在阿里云服务器配置一下安全组

      

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  • 原文地址:https://www.cnblogs.com/bookwed/p/9239933.html
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