环境信息:
- CentOS 7.4.1708
- MySQL 8.0.11
1. 下载解压缩 mysql 包
- cd /usr/local/
- wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz
- tar xzvf mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz
- mv mysql-8.0.11-linux-glibc2.12-x86_64 mysql
2. 初始化 mysql 基础环境信息
- vim /etc/profile
- PATH=/opt/mysql/bin:/opt/mysql/lib:$PATH
- export PATH
- export MYSQL_HOME="/opt/mysql"
- export ms="/opt/mysql"
3. 初始化配置实例配置文件
- mkdir -p /opt/mysql/data/mcdb
- vi /opt/mysql/data/my.cnf
- [client]
- port = 3311
- socket = /opt/mysql/data/mcdb/mysql.sock
- [mysql]
- no-auto-rehash
- [mysqld]
- user = mysql
- port = 3311
- socket = /opt/mysql/data/mcdb/mysql.sock
- basedir = /opt/mysql
- datadir = /opt/mysql/data
- pid-file = /opt/mysql/data/mcdb/mysql.pid
- relay-log = /opt/mysql/data/mcdb/relay-bin
- relay-log-info-file = /opt/mysql/data/mcdb/relay-log.info
- server-id = 13
- [mysqld_safe]
- log-error = /opt/mysql/data/mcdb/mysql.err
- pid-file = /opt/mysql/data/mcdb/mysql.pid
4. 新建用户
- groupadd mysql
- useradd mysql -g mysql
- chown mysql:mysql /opt/mysql -R
5. 初始化 mysql 实例
/opt/mysql/bin/mysqld --initialize --basedir=/opt/mysql --datadir=/opt/mysql/data/mcdb --user=mysql
从返回信息最后一行获得密码, 举个栗子:
xHGkgc+9ea6/
6. 启动该实例 mysql
- mv /opt/mysql/data/my.cnf /opt/mysql/data/mcdb/my.cnf
- /opt/mysql/bin/mysqld_safe --defaults-file=/opt/mysql/data/mcdb/my.cnf --user=mysql --basedir=/opt/mysql --datadir=/opt/mysql/data/mcdb 2>&1> /dev/null &
7. 登录 mysql
/opt/mysql/bin/mysql -uroot -pxHGkgc+9ea6/ -S /opt/mysql/data/mcdb/mysql.sock
8. 设定新密码
set password = 'hello2018';
来源: http://www.linuxidc.com/Linux/2018-04/152039.htm