MySQL 5.7.29安装配置

一、环境准备（关闭防火墙）

1、清除已安装数据库

[root@mysql01 ~]# rpm -qa | grep mariadb

mariadb-libs-5.5.35-3.el7.x86_64

[root@mysql01 ~]# yum remove mariadb-libs-5.5.35-3.el7.x86_64

 

2、安装libaio-devel包

挂载光盘

配置yum仓库

[root@mysql01 yum.repos.d]# mount /dev/sr0 /mnt

[root@mysql01 yum.repos.d]# yum clean all

[root@mysql01 yum.repos.d]# yum repolist all

[root@mysql01 yum.repos.d]# yum intall -y libaio-devel

 

3、创建用户及用户密码

[root@mysql01 ~]# groupadd mysql

[root@mysql01 ~]# useradd -g mysql mysql

[root@mysql01 ~]# passwd mysql

Changing password for user mysql.

New password:

BAD PASSWORD: The password is shorter than 8 characters

Retype new password:

passwd: all authentication tokens updated successfully.

 

4、创建数据目录、日志目录，并修改目录所有者所属组

[root@mysql01 ~]# mkdir -p /data/3306/data

[root@mysql01 ~]# mkdir -p /data/3306/binlog

[root@mysql01 yum.repos.d]# chown -R mysql.mysql /data*

 

二、上传MySQL数据库安装包并解压

[root@mysql01 stage]# ll

-rw-r--r--. 1 root root   664749587 Jun  9 20:46 mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz

[root@mysql01 stage]# gunzip mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz

[root@mysql01 stage]# ll

-rw-r--r--. 1 root root  2648074240 Jun  9 20:46 mysql-5.7.29-linux-glibc2.12-x86_64.tar

[root@mysql01 stage]# tar -xvf mysql-5.7.29-linux-glibc2.12-x86_64.tar

[root@mysql01 stage]# ll

drwxr-xr-x. 9 root root        4096 Jun  9 21:15 mysql-5.7.29-linux-glibc2.12-x86_64

-rw-r--r--. 1 root root  2648074240 Jun  9 20:46 mysql-5.7.29-linux-glibc2.12-x86_64.tar

 

三、创建软连接，并修改数据库安装目录所有者所属组

[root@mysql01 stage]# ln -s /stage/mysql-5.7.29-linux-glibc2.12-x86_64 /usr/local/mysql

[root@mysql01 stage]# ll /usr/local/

total 0

drwxr-xr-x. 2 root root  6 Mar 13  2014 bin

drwxr-xr-x. 2 root root  6 Mar 13  2014 etc

drwxr-xr-x. 2 root root  6 Mar 13  2014 games

drwxr-xr-x. 2 root root  6 Mar 13  2014 include

drwxr-xr-x. 2 root root  6 Mar 13  2014 lib

drwxr-xr-x. 2 root root  6 Mar 13  2014 lib64

drwxr-xr-x. 2 root root  6 Mar 13  2014 libexec

lrwxrwxrwx. 1 root root 42 Jun  9 21:17 mysql -> /stage/mysql-5.7.29-linux-glibc2.12-x86_64

drwxr-xr-x. 2 root root  6 Mar 13  2014 sbin

drwxr-xr-x. 5 root root 46 Mar 19  2019 share

drwxr-xr-x. 2 root root  6 Mar 13  2014 src

[root@mysql01 stage]# ll /usr/local/mysql/

total 292

drwxr-xr-x.  2 root root    4096 Jun  9 21:15 bin

drwxr-xr-x.  2 root root      52 Jun  9 21:15 docs

drwxr-xr-x.  3 root root    4096 Jun  9 21:15 include

drwxr-xr-x.  5 root root    4096 Jun  9 21:15 lib

-rw-r--r--.  1 7161 31415 276202 Dec 18 20:59 LICENSE

drwxr-xr-x.  4 root root      28 Jun  9 21:15 man

-rw-r--r--.  1 7161 31415    587 Dec 18 20:59 README

drwxr-xr-x. 28 root root    4096 Jun  9 21:15 share

drwxr-xr-x.  2 root root      86 Jun  9 21:15 support-files

 

四、修改环境变量并生效

[root@mysql01 stage]# vi /etc/profile

在文件末尾追加：

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

[root@mysql01 stage]# source /etc/profile

[root@mysql01 stage]# mysql -V

mysql  Ver 14.14 Distrib 5.7.29, for linux-glibc2.12 (x86_64) using  EditLine wrapper

 

五、初始化

[root@mysql01 stage]# mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/3306/data

 

六、编辑my.cnf参数文件

[root@mysql01 stage]# vi /etc/my3306.cnf

[mysqld]

user=mysql

basedir=/usr/local/mysql

datadir=/data/3306/data

log_bin=/data/3306/binlog/mysql-bin

port=3306

server_id=1

socket=/tmp/mysql.sock

[mysql]

socket=/tmp/mysql.sock

 

七、启动数据库

[root@mysql01 stage]# mysqld_safe --defaults-file=/etc/my3306.cnf &

 

八、登陆数据库

[root@mysql01 stage]# mysql

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.7.29-log MySQL Community Server (GPL)

 

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

 

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 

mysql>

 

九、修改用户密码

alter user 'root'@'localhost' identified by 'newpassword';