Centos7安装Mysql8.0.11

1.从官网下载压缩包:链接地址:wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz

2.解压: tar -zxvf mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz

3.安装依赖:

yum -y install wget  cmake gcc gcc-c++ ncurses  ncurses-devel  libaio-devel  openssl openssl-devel

4.创建用户组:

    groupadd mysql

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

5.创建安装目录

mkdir -p /usr/local/mysql

6.创建数据目录

mkdir -p /usr/local/mysql/data

7.初始化数据库

cd /usr/local/mysql

./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --initialize

这个时候会初始化一个数据库密码,记录下来‘root@localhost: 9cmht#5pe(pQ’

8.创建软连接

ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql

9.修改my.cnf文件,内容如下:basedir为数据库安装路径,datadir为数据库数据路径,log-error和pid-file为日志和pid路径

[mysqld]
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd


[mysqld_safe]
log-error=/var/log/mysql/mysql.log
pid-file=/var/run/mysql/mysql.pid


#
# include all files from the config directory
#

!includedir /etc/my.cnf.d

10. 复制cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld,并修改mysqld文件内容:

basedir=/usr/local/mysql

datadir=/usr/local/mysql/data

11.创建/var/log/mysql/mysql.log和/var/run/mysql/mysql.pid

mkdir -p /var/log/mysql    --创建目录

touch mysql.log                  --创建文件

mkdir -p /var/run/mysql     --创建目录

touch mysql.pid                   --创建文件

12.赋权限

chown -R mysql:mysql /var/log/mysql

chown -R mysql:mysql /var/run/mysql

chmod 750 /var/log/mysql/mysql.log

chomd 750 /var/run/mysql/mysql.pid

13.创建软连接

ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock

14.MySQL相关命令

service mysqld start  --启动mysql

service mysqld stop  --关闭mysql

service mysqld restart --重启mysql

15.登陆mysql,输入第七步初始化生成的密码

 mysql -uroot -p

16.修改root用户密码

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';

17.查看mysql版本

SELECT VERSION();

18.给root用户赋权限,将用户的host从locahost(本地访问)改为%(远程访问)

GRANT ALL ON *.* TO 'root'@'%';

如果执行此命令报没有权限,则重新创建一个root用户host为%

CREATE USER 'root'@'%' IDENTIFIED BY 'root';  --创建root用户,host为%

19.给%的root用户赋所有权限

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;  

20.修改root用户密码规则

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'root';   

21. 刷新权限

FLUSH PRIVILEGES;

22.关闭防火墙,或者给3306端口添加规则

systemctl stop firewalld.service    --关闭防火墙

firewall-cmd --zone=public --add-port=3306/tcp --permanent   --添加3306端口

firewall-cmd --reload    --重启防火墙规则




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