离线安装mysql

安装环境：
Linux系统：Centos6.5

第一步：根据操作系统版本下载数据库：

CentOS_6下载：mysql-5.7.22-1.el6.x86_64.rpm-bundle.tar

CentOS_7下载：mysql-5.7.17-1.el7.x86_64.rpm-bundle.tar

下载地址：https://dev.mysql.com/downloads/mysql/

第二步：删除系统自带的mysql数据库

1.rpm -qa | grep mysql
2.rpm -e mysql-libs-5.1.71-1.el6.x86_64 --nodeps

第三步：解压tar包，然后上传到服务器中

上传后如下：

第四步：按照顺序解压

1. rpm -ivh mysql-community-libs-5.7.24-1.el6.x86_64.rpm --nodeps --force

[root@mzz11 mysql]#  rpm -ivh mysql-community-libs-5.7.24-1.el6.x86_64.rpm --nodeps --force
warning: mysql-community-libs-5.7.24-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                ########################################### [100%]
   1:mysql-community-libs   ########################################### [100%]
[root@mzz11 mysql]# 

2. rpm -ivh mysql-community-devel-5.7.24-1.el6.x86_64.rpm --nodeps --force

[root@mzz11 mysql]# rpm -ivh mysql-community-devel-5.7.24-1.el6.x86_64.rpm --nodeps --force
warning: mysql-community-devel-5.7.24-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                ########################################### [100%]
   1:mysql-community-devel  ########################################### [100%]
[root@mzz11 mysql]# 

3. rpm -ivh mysql-community-client-5.7.24-1.el6.x86_64.rpm --nodeps --force

[root@mzz11 mysql]#  rpm -ivh mysql-community-client-5.7.24-1.el6.x86_64.rpm --nodeps --force                                         
warning: mysql-community-client-5.7.24-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                ########################################### [100%]
   1:mysql-community-client ########################################### [100%]
[root@mzz11 mysql]# 

4. rpm -ivh mysql-community-server-5.7.24-1.el6.x86_64.rpm --nodeps --force

[root@mzz11 mysql]# rpm -ivh  mysql-community-server-5.7.24-1.el6.x86_64.rpm --nodeps --force                                         
warning: mysql-community-server-5.7.24-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                ########################################### [100%]
   1:mysql-community-server ########################################### [100%]
[root@mzz11 mysql]# 

5. rpm -ivh mysql-community-common-5.7.24-1.el6.x86_64.rpm --nodeps --force

[root@mzz11 mysql]#  rpm -ivh  mysql-community-common-5.7.24-1.el6.x86_64.rpm --nodeps --force                                        
warning: mysql-community-common-5.7.24-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                ########################################### [100%]
   1:mysql-community-common ########################################### [100%]
[root@mzz11 mysql]#

第五步：启动mysql
service mysqld start

[root@mzz11 mysql]# service mysqld start
Starting mysqld:                                           [  OK  ]

mysql

[root@mzz11 mysql]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

报错：因为没有输入账号密码，可以选择免密码登录

解决方案： vi /etc/my.cnf

[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
skip-grant-tables

在最后加上 skip-grant-tables
然后重启 ：/etc/init.d/mysqld restart

[root@mzz11 mysql]# /etc/init.d/mysqld restart
Stopping mysqld:                                           [  OK  ]
Starting mysqld:                                           [  OK  ]

最后在进mysql：

[root@mzz11 mysql]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.24 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, 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> 

然后修改密码，修改用户权限可以让数据库可以远程连接：

mysql> update mysql.user set authentication_string=password('138922') where user='root' ;    
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 1

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> use mysql;
Database changed
mysql> select Host, User from user;
+-----------+---------------+
| Host      | User          |
+-----------+---------------+
| localhost | mysql.session |
| localhost | mysql.sys     |
| localhost | root          |
+-----------+---------------+
3 rows in set (0.00 sec)

mysql> update user set host = '%'   where user='root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

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

mysql> 

修改完成后，在去 vi /etc/my.cnf，把刚才加的那一行 skip-grant-tables去掉！！！
大功告成！！