1、MySQL 8.0.20最新版本在Linux上安装

文章目录

1、下载安装包
2、解压安装
3、拷贝到 /usr/local并重命名为mysql
4、删除/opt目录下解压的文件（也可以保留）只留下安装包
5、创建mysql用户组和用户并修改权限
6、在/usr/local/mysql/下创建data目录并赋权限
7、创建/var/lib/mysql目录并赋权限
8、配置my.cnf
9、初始化数据库
10、启动mysql
11、修改root密码
12、配置远程连接
13、设置mysql启动目录

1、下载安装包

下载路径：https://dev.mysql.com/downloads/mysql/
选择mysql的linux通用版本，如下
https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz

https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz

2、解压安装

上传到centos的/opt目录并解压

cd /opt
tar -xvf mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz

3、拷贝到 /usr/local并重命名为mysql

cp -r mysql-8.0.20-linux-glibc2.12-x86_64 /usr/local/mysql

4、删除/opt目录下解压的文件（也可以保留）只留下安装包

rm -rf mysql-8.0.20-linux-glibc2.12-x86_64

5、创建mysql用户组和用户并修改权限

groupadd mysqluseradd -r -g mysql mysql

6、在/usr/local/mysql/下创建data目录并赋权限

cd /usr/local/mysql/mkdir -p datachown mysql:mysql -R /usr/local/mysql/data

7、创建/var/lib/mysql目录并赋权限

mkdir /var/lib/mysql
chmod 777 /var/lib/mysql

8、配置my.cnf

vim /etc/my.cnf

内容如下：

[mysqld]
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/var/lib/mysql/mysql.sock
user=mysql
port=3306# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0#character config
character_set_server=utf8mb4[mysqld_safe]
log-error=/usr/local/mysql/data/mysql.log
pid-file=/usr/local/mysql/data/mysql.pid#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

9、初始化数据库

进入mysql的bin目录

cd /usr/local/mysql/bin/

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

此处要记住初始密码，最后的就是生成的初始密码

[root@localhost mysql]# cd /usr/local/mysql/bin/
[root@localhost bin]# ./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/ --user=mysql --initialize
2020-06-07T04:17:06.568682Z 0 [Warning] [MY-011070] [Server] 'Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it' is deprecated and will be removed in a future release.
2020-06-07T04:17:06.569064Z 0 [System] [MY-013169] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.20) initializing of server in progress as process 14093
2020-06-07T04:17:06.651692Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2020-06-07T04:17:09.934932Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2020-06-07T04:17:14.121694Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: 1vUq3Lj-e7H%

10、启动mysql

先将mysql.server放置到/etc/init.d/mysql中

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

启动

service mysql startps -ef|grep mysql

出现如下说明启动成功

Starting MySQL.Logging to '/usr/local/mysql/data/mysql.log'.
......... SUCCESS!

效果如图

[root@localhost lib]# ps -ef|grep mysql
root      15012      1  0 21:39 pts/1    00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/localhost.localdomain.pid
mysql     15213  15012  6 21:39 pts/1    00:00:06 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/usr/local/mysql/data/mysql.log --pid-file=/usr/local/mysql/data/localhost.localdomain.pid --socket=/var/lib/mysql/mysql.sock --port=3306
root      15311   2543  0 21:41 pts/1    00:00:00 grep --color=auto mysql

11、修改root密码

#bin目录下
./mysql -u root -p

此处建立软连接

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

首先登录mysql，前面的那个是随机生成的。

[root@localhost bin]# ./mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.20Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql>

再执行下面三步操作，然后重新登录。

alter user 'root'@'localhost' identified by '123456';ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;FLUSH PRIVILEGES;

效果如图

mysql> alter user 'root'@'localhost' identified by '123456';
Query OK, 0 rows affected (0.09 sec)mysql> ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.02 sec)mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)

12、配置远程连接

#访问mysql库
use mysql         #使root能再任何host访问
update user set host = '%' where user = 'root';      #刷新
FLUSH PRIVILEGES;

效果如图

mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -ADatabase changed
mysql>
mysql> update user set host = '%' where user = 'root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)

13、设置mysql启动目录

如果不希望每次都到bin目录下使用mysql命令则执行以下命令

mysql> exit
Bye
[root@localhost bin]# ln -s  /usr/local/mysql/bin/mysql    /usr/bin
[root@localhost bin]#

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1、MySQL 8.0.20最新版本在Linux上安装

文章目录

1、下载安装包

2、解压安装

3、拷贝到 /usr/local并重命名为mysql

4、删除/opt目录下解压的文件（也可以保留）只留下安装包

5、创建mysql用户组和用户并修改权限

6、在/usr/local/mysql/下创建data目录并赋权限

7、创建/var/lib/mysql目录并赋权限

8、配置my.cnf

9、初始化数据库

10、启动mysql

11、修改root密码

12、配置远程连接

13、设置mysql启动目录

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