linux下mysql安装

linux下安装MySQL8

 

cd /usr/local

 

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.23-el7-x86_64.tar.gz

 

tar -zxvf mysql-5.7.23-el7-x86_64.tar.gz

 

ln -s mysql-5.7.23-el7-x86_64 mysql

 

cd mysql/

mkdir data

 

#useradd会自动添加group

useradd mysql

#groupadd mysql

 

#就当/etc/my.cnf是空的

vim /etc/my.cnf

添加basedir=/usr/local/mysql

datadir=/usr/local/mysql/data

添加

log-error= /usr/local/mysql/mariadb.log    

  pid-file=/usr/local/mysql/mariadb.pid

添加socket= /usr/local/mysql/mysql.sock

参考

-------------------------------------------

[mysqld]

datadir=/usr/local/mysql/data

basedir=/usr/local/mysql

socket= /usr/local/mysql/mysql.sock

 

server_id = 222

 

[mysqld_safe]

log-error=/usr/local/mysql/mariadb.log

pid-file=/usr/local/mysql/mariadb.pid

 

!includedir /etc/my.cnf.d

------------------------------------------

 

touch /usr/local/mysql/mariadb.log

touch /usr/local/mysql/mariadb.pid

 

yum -y install libaio  [linux最小化安装时 libaio要自己安装]

 

cd bin

 

mysqld --user=mysql --initialize

# ./mysqld --user=mysql --initialize

 

记录rootpassword

##echo 'ibURWsUWt4-S' >> /root/rootpass.txt

 

chown -R mysql:mysql /usr/local/mysql-5.7.23-el7-x86_64

 

cp ../support-files/mysql.server /etc/init.d/mysqld

 

service mysqld start

 

ln -s /usr/local/mysql/mysql.sock /tmp/mysql.sock

 

登陆并修改密码

./mysql -uroot -p -h127.0.0.1

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

flush privileges;

关闭数据库服务

service mysqld stop

新增所有参数 重新打开数据库服务