CentOS下安装mysql8.0

  • 下载mysql

    $ wget http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-8.0/mysql-8.0.4-rc-linux-glibc2.12-x86_64.tar.gz

  • 解压

    $ mysql tar -zxvf mysql-8.0.4-rc-linux-glibc2.12-x86_64.tar.gz -C /usr/local/

  • 修改文件夹名称

    $ mv mysql-8.0.4-rc-linux-glibc2.12-x86_64/ mysql

  • 添加默认配置文件

    $ vim/etc/my.cnf

[client]
port=3306
socket=/tmp/mysql/mysql.sock

[mysqld]
port=3306
user=mysql
socket=/tmp/mysql/mysql.sock
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
log-error=error.log

  • 创建mysql组

    $ groupadd mysql

  • 创建mysql用户

    $ useradd -g mysql mysql

  • 初始化mysql

    $ /usr/local/mysql/bin/mysqld –initialize –user=mysql –basedir=/usr/local/mysql/ –datadir=/usr/local/mysql/data/

  • 在初始化过程中可能会遇到错误，日志如下可以修改/tmp/mysql的目录权限

    $ chown -R mysql:mysql /tmp/mysql

2018-07-08T02:53:24.542370Z 0 [System] [MY-010116] /usr/local/mysql/bin/mysqld (mysqld 8.0.4-rc) starting as process 17745 ...
mysqld: Can't create/write to file '/tmp/mysql/data/ibd35qXQ' (Errcode: 13 - Permission denied)
2018-07-08T02:53:24.554816Z 1 [ERROR] [MY-011066] InnoDB: Unable to create temporary file; errno: 13
2018-07-08T02:53:24.554856Z 1 [ERROR] [MY-011066] InnoDB: InnoDB Database creation was aborted with error Generic error. You may need to delete the ibdata1 file before trying to start up again.
2018-07-08T02:53:24.555000Z 0 [ERROR] [MY-010020] Data Dictionary initialization failed.
2018-07-08T02:53:24.555033Z 0 [ERROR] [MY-010119] Aborting
2018-07-08T02:53:24.555919Z 0 [System] [MY-010910] /usr/local/mysql/bin/mysqld: Shutdown complete.
  • 如果无异常情况日志如下可以看到mysql默认会生成root账号和密码root@localhost: J&:rqhMd/9>f
2018-07-08T02:57:57.631578Z 0 [System] [MY-010116] /usr/local/mysql/bin/mysqld (mysqld 8.0.4-rc) starting as process 18894 ...
2018-07-08T02:58:03.499117Z 0 [Warning] [MY-010068] CA certificate ca.pem is self signed.
2018-07-08T02:58:03.718786Z 5 [Note] [MY-010454] A temporary password is generated for root@localhost: J&:rqhMd/9>f

  • 接下来可以启动mysql服务器

    $ ./support-files/mysql.server start

  • 修改mysql的默认初始化密码

    $ alter user ‘root’@’%’ identified with mysql_native_password by ‘root’;

  • 创建用户

    $ create user ‘jack’@’localhost’ identified by ‘jack’;

  • 授予权限

    $ grant replication slave on . to ‘jack’@’localhost’;

  • 刷新

    $ flush privileges;

  • 修改root用户可以远程连接

    $ update mysql.user set host=’%’ where user=’root’

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