一、软件包下载地址：https://downloads.mysql.com/archives/community/
二、新建目录/tools/soft 目录并重名mysql
mkdir -p /tools/soft
#解压到安装目录
tar -zxvf /tools/soft/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /tools/
#将文件重名称
mv /tools/mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz mysql
三、创建mysql用户组和用户并修改权限
groupadd mysql
useradd -r -g mysql mysql
四、创建数据目录并赋予权限
mkdir -p /data/mysql #创建目录
chown mysql:mysql -R /data/mysql #赋予权限
五、配置my.cnf
vim /etc/my.cnf
按下i键贴内容如下
[mysqld]
bind-address=0.0.0.0
port=3306
user=mysql
basedir=/tools/mysql
datadir=/data/mysql
socket=/tmp/mysql.sock
log-error=/data/mysql/mysql.err
pid-file=/data/mysql/mysql.pid
#character config
character_set_server=utf8mb4
symbolic-links=0
explicit_defaults_for_timestamp=true
按：wq保存
六、初始化数据库
#进入安装目录
cd /tools/mysql/bin/
#初始化
./mysqld --defaults-file=/etc/my.cnf --basedir=/tools/mysql/ --datadir=/data/mysql/ --user=mysql --initialize
#查看密码
[root@miguvideo-3 soft]# cat /data/mysql/mysql.err
2020-04-23T08:47:08.671449Z 0 [Warning] InnoDB: New log files created, LSN=45790
2020-04-23T08:47:08.763758Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2020-04-23T08:47:08.835429Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 0436c78a-853f-11ea-888d-fa163e1ced08.
2020-04-23T08:47:08.839632Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2020-04-23T08:47:08.840339Z 1 [Note] A temporary password is generated for root@localhost: L>ysxdro!4BX
#初始密码为L>ysxdro!4BX
七、启动mysql，并更改root 密码
#先将mysql.server放置到/etc/init.d/mysql中
cp /tools/mysql/support-files/mysql.server /etc/init.d/mysql
#ps:很重的一步直接执行service mysql start启动报错 mysqld_safe The file /usr/local/mysql/bin/mysqld does not exist or is not executable解决办法如下 https://www.cnblogs.com/wajika/p/6719805.html 创建链接
ln -s /tools/mysql/bin/mysqld /usr/local/mysql/bin/mysqld
#启动mysql
service mysql start
#查看是否启动
ps -ef|grep mysql
#添加mysql环境变量
vi /etc/profile
添加如下代码
export MYSQL_HOME=/tools/mysql
export PATH=$PATH:$MYSQL_HOME/bin
#保存
：wq
#更新环境变量
source /etc/profile
#修改用户名密码
[root@miguvideo-3 soft]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 5.7.17 MySQL Community Server (GPL)
Copyright (c) 2000, 2016, 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>
执行下面三部
SET PASSWORD = PASSWORD('123456');
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
FLUSH PRIVILEGES;
#密码修改成功~~
#修改任何地址都能访问
use mysql #访问mysql库
update user set host = '%' where user = 'root'; #使root能再任何host访问
FLUSH PRIVILEGES; #刷新