centos7.5下安裝 MySQL 8 解壓版安裝詳細教程

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

系統版本

mysql版本類型

下載之前 先安裝 wget：

yum -y install wget

下載mysql8.0:執行如下命令：

wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.18-el7-x86_64.tar.gz

mysql壓縮包存放目錄：/usr/local/mysql/mysql-8.0.18-el7-x86_64.tar.gz

解壓mysql安裝包：

tar -zxvf mysql-8.0.18-el7-x86_64.tar.gz

進入mysql-8.0.18-el7-x86_64目錄。

編輯mysql配置文件：

vi /etc/my.cnf

修改內容爲：

[mysqld]
socket=/usr/local/mysql/mysql-8.0.18-el7-x86_64/mysql.sock
port=3306
user=mysql
basedir=/usr/local/mysql/mysql-8.0.18-el7-x86_64
datadir=/usr/local/mysql/mysql-8.0.18-el7-x86_64/data
max_allowed_packet=128M
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
[client]
port=3306
socket=/usr/local/mysql/mysql-8.0.18-el7-x86_64/mysql.sock

初始化mysql ，進入安裝目錄下的bin目錄：/usr/local/mysql/mysql-8.0.18-el7-x86_64/bin/，執行如下命令：

./mysqld --initialize --user=mysql --basedir=/usr/local/mysql/mysql-8.0.18-el7-x86_64 --datadir=/usr/local/mysql/mysql-8.0.18-el7-x86_64/data

初始化mysql 並得到初始密碼

進入/usr/local/mysql/mysql-8.0.18-el7-x86_64/support-files目錄，執行./mysql.server start啓動mysql

複製啓動文件到系統啓動路徑下：

cp support-files/mysql. server /etc/rc.d/init.d/mysql

啓動如果報錯 就報log目錄已經文件給最高權限即可
啓動命令：service mysqld start
重新啓動命令：systemctl restart mysqld.service
啓動命令：systemctl start mysqld.service
停止啓動命令：systemctl stop mysqld.service
終極啓動命令：/etc/init.d/mysql start