linux mysql5.7.17安装教程

一、基本配置

系统：Ubuntu-18.04 64位

数据库：mysql-5.7.17 64位

二、安装步骤

1、新建tmp目录

mkdir tmp

2、进入tmp目录并下载压缩包

cd /tmp 

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz

3、创建MySQL系统用户

sudo groupadd mysql

sudo useradd -r -g mysql -s /bin/false mysql

4、安装MySQL

将之前下载的mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz安装包解压到/usr/local目录，并将目录名称改为mysql。然后创建mysql-files目录，并设置权限。

解压：sudo tar -zxvf mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /usr/local/

重命名：sudo mv /usr/local/mysql-5.7.17-linux-glibc2.5-x86_64/ /usr/local/mysql/

        进入MySQL安装目录：cd /usr/local/mysql/

       创建mysql-files目录：sudo mkdir mysql-files

       赋予750权限：sudo chmod 750 mysql-files

       将当前目录的拥有者设置为mysql用户和mysql组：

sudo chown -R mysql .

sudo chgrp -R mysql .

5、初始化MySQL

执行初始化命令：sudo bin/mysqld --initialize --user=mysql

注意事项：mysql初始化工作依赖libaio包，如果没有安装就会出现这个错误 “bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory”。

检查是否已安装： apt-cache search libaio

如果没有，则安装： sudo apt-get install libaio1

安装失败则切换源镜像，重新安装：vi /etc/apt/sources.list

deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse

deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse

deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse

deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse

deb-src http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse

deb-src http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse

deb-src http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse

deb-src http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb-src http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse

:wq

更新：sudo apt-get update

           sudo apt-get upgrade

配置ssl加密相关：sudo bin/mysql_ssl_rsa_setup

修改权限：sudo chown -R root .

                         sudo chown -R mysql data mysql-files

6、启动MySQL服务

cd /usr/local/mysql/bin

mysqld

7、使用MySQL

MySQL安装目录赋予权限：sudo chmod -R 777 /usr/local/mysql

MySQL服务器启动后，使用以下命令登录MySQL：bin/mysql -u root –p

需要注意的就是这个地方的密码，是你执行"sudo bin/mysqld --initialize --user=mysql"命令时产生的一个随机密码。

8、修改密码

set password for root@localhost = password('123456');

9、配置环境变量

vim /etc/profile

export PATH=$PATH:/usr/local/mysql/bin

source /etc/profile