Tutorial on the principle and application of database system (005) -- Yum offline installation of MySQL 5.7 (Linux Environment)

Database system principle and Application Tutorial （005）—— yum Offline installation MySQL5.7（Linux Environmental Science ）

One 、 uninstall MariaDB

[[email protected] Packages]# rpm -ivh lrzsz-0.12.20-36.el7.x86_64.rpm 
 Warning ：lrzsz-0.12.20-36.el7.x86_64.rpm:  head V3 RSA/SHA256 Signature,  secret key  ID f4a80eb5: NOKEY
 In preparation ...                          ################################# [100%]
 Upgrading / install ...
   1:lrzsz-0.12.20-36.el7             ################################# [100%]
[[email protected] Packages]# yum remove -y mariadb-libs
 Loaded plug-in ：fastestmirror
 Resolving dependencies 
-->  Checking transactions 
--->  software package  mariadb-libs.x86_64.1.5.5.52-1.el7  Will be   Delete 
-->  Dealing with dependencies  libmysqlclient.so.18()(64bit), It's packaged  2:postfix-2.10.1-6.el7.x86_64  need 
-->  Dealing with dependencies  libmysqlclient.so.18(libmysqlclient_18)(64bit), It's packaged  2:postfix-2.10.1-6.el7.x86_64  need 
-->  Checking transactions 
--->  software package  postfix.x86_64.2.2.10.1-6.el7  Will be   Delete 
-->  Resolve dependency complete 

 Dependency resolution 

===================================================================================================
 Package                 framework                  edition                        Source             size 
===================================================================================================
 Deleting :
 mariadb-libs         x86_64         1:5.5.52-1.el7              @anaconda        4.4 M
 Remove for dependency :
 postfix              x86_64         2:2.10.1-6.el7              @anaconda        12 M

 Business summary 
====================================================================================================
 remove   1  software package  (+1  Dependent packages )

 Installation size ：17 M
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
 Warning ：RPM  The database has been disabled  yum  Program modification .
   Deleting     : 2:postfix-2.10.1-6.el7.x86_64                               1/2 
   Deleting     : 1:mariadb-libs-5.5.52-1.el7.x86_64                          2/2 
   Verification in progress       : 2:postfix-2.10.1-6.el7.x86_64                               1/2 
   Verification in progress       : 1:mariadb-libs-5.5.52-1.el7.x86_64                          2/2 

 Delete :
  mariadb-libs.x86_64 1:5.5.52-1.el7                                 

 Removed as a dependency :
  postfix.x86_64 2:2.10.1-6.el7                                       

 complete ！

Two 、 Take what you need rpm Package upload to server

[[email protected] mysql-soft]# pwd
/soft/mysql-soft
[[email protected] mysql-soft]# rz

[[email protected] mysql-soft]# ll
 Total usage  196704
-rw-r--r--. 1 root root  25365436 6 month   12 2019 mysql-community-client-5.7.27-1.el7.x86_64.rpm
-rw-r--r--. 1 root root    281248 6 month   12 2019 mysql-community-common-5.7.27-1.el7.x86_64.rpm
-rw-r--r--. 1 root root   2272032 6 month   12 2019 mysql-community-libs-5.7.27-1.el7.x86_64.rpm
-rw-r--r--. 1 root root 173500088 6 month   12 2019 mysql-community-server-5.7.27-1.el7.x86_64.rpm

3、 ... and 、 install rpm package

[[email protected] mysql-soft]# rpm -ivh --nodeps --force *.rpm
 Warning ：mysql-community-client-5.7.27-1.el7.x86_64.rpm:  head V3 DSA/SHA1 Signature,  secret key  ID 5072e1f5: NOKEY
 In preparation ...                          ################################# [100%]
 Upgrading / install ...
   1:mysql-community-common-5.7.27-1.e################################# [ 25%]
   2:mysql-community-libs-5.7.27-1.el7################################# [ 50%]
   3:mysql-community-client-5.7.27-1.e################################# [ 75%]
   4:mysql-community-server-5.7.27-1.e################################# [100%]

Four 、 To configure MySQL Operating environment

1、 start-up MySQL service

[[email protected] mysql-soft]# systemctl restart mysqld

2、 see MySQL Related files and directories

[[email protected] mysql-soft]# find / -name mysql*
/etc/selinux/targeted/active/modules/100/mysql
/etc/logrotate.d/mysql
/var/lib/mysql
/var/lib/mysql/mysql
/usr/bin/mysql
/usr/lib64/mysql
/usr/share/mysql

# MySQL  Configuration file for 
[[email protected] mysql-soft]# ll /etc/my.cnf
-rw-r--r--. 1 root root 960 6 month   10 2019 /etc/my.cnf

# MySQL  Log file 
[[email protected] mysql-soft]# ll /var/log/mysqld.log
-rw-r-----. 1 mysql mysql 3795 6 month   26 19:14 /var/log/mysqld.log

# MySQL  Start script for 
[[email protected] mysql-soft]# ll /usr/lib/systemd/system/mysqld.service
-rw-r--r--. 1 root root 1614 6 month   10 2019 /usr/lib/systemd/system/mysqld.service

# MySQL  The process file for 
[[email protected] mysql-soft]# ll /var/run/mysqld/mysqld.pid
-rw-r-----. 1 mysql mysql 5 6 month   26 19:14 /var/run/mysqld/mysqld.pid

# socket  file 
[[email protected] mysql-soft]# ll /var/lib/mysql/mysql.sock
srwxrwxrwx. 1 mysql mysql 0 6 month   26 19:14 /var/lib/mysql/mysql.sock

3、 see MySQL default root Account password

MySQL After installation , Would be root Account Generate a default password . You can view the default password in the following way .

[[email protected] mysql-soft]# grep 'temporary password' /var/log/mysqld.log
2022-06-26T11:14:04.385266Z 1 [Note] A temporary password is generated for [email protected]: QFh7LiP8-r#c

4、 Log in with the default password MySQL

[[email protected] mysql-soft]# mysql -uroot -pQFh7LiP8-r#c
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.27

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> 

5、 modify root Password of account

mysql> alter user 'root'@'localhost' identified by 'Wgx123456.';
Query OK, 0 rows affected (0.00 sec)

6、 Log in with the new password MySQL

[[email protected] mysql-soft]# mysql -uroot -pWgx123456.
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.27 MySQL Community Server (GPL)

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>