Linux 安装mysql

1.下载

https://dev.mysql.com/downloads/mysql/

2.解压

tar -zxvf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz

3. 把文件重命名为mysql

mv mysql-5.7.26-linux-glibc2.12-x86_64 /usr/local/mysql

4.创建mysql用户,并且给mysql用户赋予权限

groupadd mysql
useradd -r -g mysql mysql

5.创建/data/mysql目录,并赋予mysql权限

mkdir -p  /data/mysql             
chown mysql:mysql -R /data/mysql

6.配置my.cnf

vim /etc/my.cnf

插入以下内容

[mysqld]
bind-address=0.0.0.0
port=3306
user=mysql
basedir=/usr/local/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

7.初始化数据库

cd /usr/local/mysql/bin/

./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql/ --datadir=/data/mysql/ --user=mysql --initialize

8.如果初始化报错,可能是没有依赖,需要下载以下依赖再执行初始化命令就行

mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory

yum install -y libaio

yum -y install numactl

9.查看mysql初始化密码

cat /data/mysql/mysql.err

 

 10.启动mysql

service mysql start

11.修改mysql密码,这里输入上面查看的初始化密码

./mysql -u root -p 

SET PASSWORD = PASSWORD('123456');
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
FLUSH PRIVILEGES;                                 

12.配置远程连接

use mysql ;

update user set host = '%' where user = 'root';    

FLUSH PRIVILEGES;