centos7安装mysql5.7.24,并使用system管理mysql

1.创建安装目录

mkdir /mysql

2.进入安装目录

cd /data

3.下载5.7.24的tar包

wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz

4.解压

tar -xvzf mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz

5.修改文件夹名

mv mysql-5.7.24-linux-glibc2.12-x86_64 mysql

6.查看是否存在mysql残留，并进行清除

查看包：rpm -qa|grep -i mysql
清除包：rpm -ev 残余包名 --nodeps

查看路径：find / -name mysql
清除路径：rm -rf 路径

7.创建用户和用户组

groupadd mysql
useradd -r -g mysql mysql

8.root用户下执行初始化，这里会生成一个初始的临时密码，需要记录下来

./mysqld --initialize --user=mysql --basedir=/data/mysql/ --datadir=/data/mysql/data/ --lc_messages_dir=/data/mysql/share --lc_messages=en_US

9.编辑my.cnf

vim /etc/my.cnf

10.添加内容

[mysqld]
basedir=/data/mysql/
datadir=/data/mysql/data/
socket=/data/mysql/data/mysql.sock

[client]
port=3306
socket=/data/mysql/data/mysql.sock

11.创建systemd管理项

vim /usr/lib/systemd/system/mysqld.service

12.写入system配置

[Unit]
Description=MySQL Server
Documentation=mysqld
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/data/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000

13.重读systemd

systemctl daemon-reload

14.启动mysql，查看启动状态，并设置开机自启

systemctl start mysqld.service
systemctl status mysqld.service
systemctl enable mysqld.service

 15.设置mysql远程访问，输入之前生成的临时密码

./mysql -uroot -p

16.修改临时密码

ALTER USER USER() IDENTIFIED BY '123456';

17.设置root远程访问

use mysql
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
FLUSH PRIVILEGES;