centos7 安裝 mysql5.7.25

一、檢查是否安裝了mysql和mariadb，若已經安裝就需要卸載。

[root@localhost ~]# rpm -qa|grep mariadb 　　// 查詢出來已安裝的mariadb
[root@localhost ~]# rpm -e --nodeps 文件名 　　// 卸載mariadb，文件名為上述命令查詢出來的文件
[root@localhost ~]# rm /etc/my.cnf　　　　　　//刪除配置文件

 

二、添加mysql用戶及用戶組

[root@localhost ~]# groupadd mysql    //創建mysql用戶組
[root@localhost ~]# useradd -g mysql mysql      //創建mysql用戶，並添加到mysql用戶組

 

三、解壓文件，並移動到指定的目錄下

[root@localhost ~]# tar -zvxf mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz
[root@localhost ~]# mv 解壓出來的文件夾名 mysql
[root@localhost ~]# mv mysql /usr/local/

 

四、創建配置文件

[root@localhost support-files]# vim /etc/my.cnf
#通過vim編輯器編輯my.cnf代碼如下：

[mysqld]
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
socket = /tmp/mysql.sock
character-set-server=utf8

log-error = /usr/local/mysql/data/mysqld.log
pid-file = /usr/local/mysql/data/mysqld.pid

 

五、初始化數據庫

[root@localhost ~]# cd /usr/local/mysql/bin/
[root@localhost bin]# ./mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

 

六、查看初始默認密碼

[root@localhost bin]# cat /usr/local/mysql/data/mysqld.log       
2019-06-05T07:08:28.263392Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2019-06-05T07:08:28.263457Z 0 [Warning] 'NO_ZERO_DATE', 'NO_ZERO_IN_DATE' and 'ERROR_FOR_DIVISION_BY_ZERO' sql modes should be used with strict mode. They will be merged with strict mode in a future release.
2019-06-05T07:08:28.263462Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2019-06-05T07:08:28.961752Z 0 [Warning] InnoDB: New log files created, LSN=45790
2019-06-05T07:08:29.039265Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2019-06-05T07:08:29.095290Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: b858de41-8760-11e9-84f3-00505681edfc.
2019-06-05T07:08:29.096413Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2019-06-05T07:08:29.096953Z 1 [Note] A temporary password is generated for root@localhost: kXJh+_RMu52K

 

七、將啟動腳本放到開機初始化目錄

[root@localhost ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

 

八、啟動mysql

[root@localhost ~]# service mysql start
Starting MySQL. SUCCESS! 

 

九、使用root賬號和默認密碼登錄mysql

[root@localhost ~]# cd /usr/local/mysql/bin/
[root@localhost bin]# ./mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.25

Copyright (c) 2000, 2019, 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> 

 

十、修改root密碼

mysql> set password=password('root');
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> grant all privileges on *.* to root@'%' identified by '1234567890';
Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

 

十一、添加遠程訪問權限

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '1234567890' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)

 

十二、重啟mysql

[root@localhost bin]# service mysql restart
Shutting down MySQL.. SUCCESS! 
Starting MySQL. SUCCESS!