Linux安装mysql8.0.25

下载mysql

wget https://cdn.mysql.com/archives/mysql-8.0/mysql-8.0.25-linux-glibc2.12-x86_64.tar.xz

cd /usr/local/
mkdir mysql
cd mysql/

#移动刚才下载的安装包，到，/usr/local/mysql/

mv /opt/mysql-8/mysql-8.0.25-linux-glibc2.12-x86_64.tar.xz .

#解压

tar xvjf mysql-8.0.25-linux-glibc2.12-x86_64.tar.xz

#修改解压后的重命名 文件名

mv mysql-8.0.25-linux-glibc2.12-x86_64 mysql-8.0.25

cd /usr/local/mysql

[email protected] mysql]# mkdir data
[[email protected] mysql]# groupadd mysql
[[email protected] mysql]# useradd -g mysql mysql
[[email protected] mysql]# chown -R mysql.mysql /usr/local/mysql/mysql-8.0.25
[[email protected] mysql]# chmod 750 /usr/local/mysql/data -R
[[email protected] mysql]#

# 再 /etc/profile  中最后 添加

[[email protected] mysql]# vim /etc/profile

# 再 /etc/profile  中最后 添加如下：

export PATH=$PATH:/usr/local/mysql/mysql-8.0.25/bin:/usr/local/mysql/mysql-8.0.25/lib

#使配置文件生效

source /etc/profile

添加 /etc/my.cnf 文件

[[email protected] ~]# cat /etc/my.cnf
[mysql]
default-character-set=utf8mb4
[client]
socket=/var/lib/mysql/mysql.sock
[mysqld]
user=mysql
general_log = 1
general_log_file= /var/log/mysql/mysql.log
socket=/var/lib/mysql/mysql.sock
basedir=/usr/local/mysql/mysql-8.0.25
datadir=/usr/local/mysql/data
log-bin=/usr/local/mysql/data/mysql-bin
innodb_data_home_dir=/usr/local/mysql/data
innodb_log_group_home_dir=/usr/local/mysql/data/
character-set-server=utf8mb4
lower_case_table_names=1
autocommit=1
default_authentication_plugin=mysql_native_password
symbolic-links=0
[mysqld_safe]
log-error=/usr/local/mysql/data/mysql.log
pid-file=/usr/local/mysql/data/mysql.pid
[[email protected] ~]# 

 

cd /usr/local/mysql/mysql-8.0.25/bin/

执行安装命令

./mysqld --user=mysql --basedir=/usr/local/mysql/mysql-8.0 --datadir=/usr/local/mysql/data/ --initialize

安装最后 会出现 密码 for [email protected]:初始密码

 

cd /usr/local/mysql/mysql-8.0.25/

[[email protected] mysql-8.0.25]# cp -a ./support-files/mysql.server /etc/init.d/mysql
[[email protected] mysql-8.0.25]# cp -a ./support-files/mysql.server /etc/init.d/mysqld

[[email protected] mysql-8.0.25]# chown 777 /etc/my.cnf
[[email protected] mysql-8.0.25]# chmod +x /etc/init.d/mysql
[[email protected] mysql-8.0.25]# chmod +x /etc/init.d/mysqld
[[email protected] mysql-8.0.25]# mkdir /var/lib/mysql

[[email protected] mysql-8.0.25]# chown -R mysql:mysql /var/lib/mysql/
[[email protected] mysql-8.0.25]# service mysql start
Starting MySQL.Logging to '/usr/local/mysql/data/mysql.log'.
. SUCCESS! 
[[email protected] mysql-8.0.25]# 
[[email protected] mysql-8.0.25]# service mysql status
 SUCCESS! MySQL running (17407)
[[email protected] mysql-8.0.25]#

#mysql启动命令

service mysql start

#mysql状态

service mysql status

#修改密码

登录mysql

mysql -u root -p           #回车输入安装时候 末尾输出的密码

#修改密码

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

#使之生效

flush privileges;

## 修改 任意ip 都可以登录mysql

use mysql

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

flush privileges;

 

如果  软件登录mysql ，则需要 开通3306端口 或者 关闭防火墙

#防火墙状态

firewall-cmd --state

#临时关闭防火墙  （重启失效）

systemctl stop firewalld.service