centos7 安装mysql5.7
检查系统自带的Mysql，并卸载自带的版本
[root@iZ2366ycl7sZ config]# yum list installed |grep mysql
mysql.x86_64 5.1.73-5.el6_6 @base
mysql-libs.x86_64 5.1.73-5.el6_6 @base
php56w-mysql.x86_64 5.6.40-1.w6 @webtatic
卸载系统自带的mysql及其依赖
[root@iZ2366ycl7sZ config]# yum -y remove mysql-libs.x86_64
Loaded plugins: security
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package mysql-libs.x86_64 0:5.1.73-5.el6_6 will be erased
--> Processing Dependency: libmysqlclient.so.16()(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> Processing Dependency: libmysqlclient.so.16()(64bit) for package: 2:postfix-2.6.6-6.el6_5.x86_64
--> Processing Dependency: libmysqlclient.so.16()(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: 2:postfix-2.6.6-6.el6_5.x86_64
--> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> Processing Dependency: libmysqlclient_r.so.16()(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> Processing Dependency: libmysqlclient_r.so.16()(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> Processing Dependency: libmysqlclient_r.so.16(libmysqlclient_16)(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> Processing Dependency: libmysqlclient_r.so.16(libmysqlclient_16)(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> Processing Dependency: mysql-libs for package: 2:postfix-2.6.6-6.el6_5.x86_64
--> Processing Dependency: mysql-libs = 5.1.73-5.el6_6 for package: mysql-5.1.73-5.el6_6.x86_64
--> Running transaction check
---> Package mysql.x86_64 0:5.1.73-5.el6_6 will be erased
---> Package php56w-mysql.x86_64 0:5.6.40-1.w6 will be erased
---> Package postfix.x86_64 2:2.6.6-6.el6_5 will be erased
--> Finished Dependency Resolution
Dependencies Resolved
========================================================================================================================================
Package Arch Version Repository Size
========================================================================================================================================
Removing:
mysql-libs x86_64 5.1.73-5.el6_6 @base 4.0 M
Removing for dependencies:
mysql x86_64 5.1.73-5.el6_6 @base 2.4 M
php56w-mysql x86_64 5.6.40-1.w6 @webtatic 457 k
postfix x86_64 2:2.6.6-6.el6_5 @updates 9.7 M
Transaction Summary
========================================================================================================================================
Remove 4 Package(s)
Installed size: 17 M
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Erasing : php56w-mysql-5.6.40-1.w6.x86_64 1/4
Erasing : 2:postfix-2.6.6-6.el6_5.x86_64 2/4
Erasing : mysql-5.1.73-5.el6_6.x86_64 3/4
Erasing : mysql-libs-5.1.73-5.el6_6.x86_64 4/4
Verifying : mysql-libs-5.1.73-5.el6_6.x86_64 1/4
Verifying : php56w-mysql-5.6.40-1.w6.x86_64 2/4
Verifying : mysql-5.1.73-5.el6_6.x86_64 3/4
Verifying : 2:postfix-2.6.6-6.el6_5.x86_64 4/4
Removed:
mysql-libs.x86_64 0:5.1.73-5.el6_6
Dependency Removed:
mysql.x86_64 0:5.1.73-5.el6_6 php56w-mysql.x86_64 0:5.6.40-1.w6 postfix.x86_64 2:2.6.6-6.el6_5
Complete!
清除余项及配置
whereis mysql
mysql: /usr/bin/mysql /usr/lib64/mysql /usr/local/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
#删除上面的文件夹
rm -rf /usr/bin/mysql
…… 省略重复操作
清除配置
rm –rf /usr/my.cnf
rm -rf /root/.mysql_sercret
下载rpm包
wget http://repo.mysql.com/mysql57-community-release-el7-9.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
查看yum更新列表
yum check-update
更新
yum update
安装本地mysql源
yum localinstall mysql-community-release-el7-5.noarch.rpm
验证是否安装成功
[root@iZ2366ycl7sZ software]# yum repolist all | grep mysql
mysql-connectors-community MySQL Connectors Community enabled: 83
mysql-connectors-community-source MySQL Connectors Community - S disabled
mysql-tools-community MySQL Tools Community enabled: 74
mysql-tools-community-source MySQL Tools Community - Source disabled
mysql55-community MySQL 5.5 Community Server disabled
mysql55-community-source MySQL 5.5 Community Server - S disabled
mysql56-community MySQL 5.6 Community Server enabled: 493
mysql56-community-source MySQL 5.6 Community Server - S disabled
mysql57-community-dmr MySQL 5.7 Community Server Dev disabled
mysql57-community-dmr-source MySQL 5.7 Community Server Dev disabled
修改默认版本为5.7
方法一：
执行：
yum-config-manager --disable mysql56-community
yum-config-manager --enable mysql57-community-dmr
如上操作，是把5.6禁用，把5.7启用
此法，会有异常情况：
如果执行命令出现如下错误：
-bash: yum-config-manager: command not found
可用执行如下命令解决，然后继续上面的操作命令：
yum -y install yum-utils
方法二：
直接编辑配置文件，简单、直接，基本不会出现错误～
vi /etc/yum.repos.d/mysql-community.repo
把5.6的enabled=0
把5.7的enabled=1
然后保存就ok
yum repolist all | grep mysql
就可以看到，5.7是启用的
安装mysql
执行如下命令：
yum install mysql-community-server
启动mysql
[root@iZ2366ycl7sZ software]# service mysqld start
Initializing MySQL database: [ OK ]
Starting mysqld: [ OK ]
查看mysql服务状态
[root@iZ2366ycl7sZ software]# service mysqld status
mysqld (pid 7036) is running...
查看mysql 初始密码
mysql5.7之后初始密码不再默认为空
[root@iZ2366ycl7sZ software]# grep 'temporary password' /var/log/mysqld.log
2019-03-29T07:09:36.375706Z 1 [Note] A temporary password is generated for root@localhost: xo%LBtyoo2MV
命令行登录mysql ，并修改密码
mysql -u root -p
修改两个参数后可设置简单密码
mysql> set global validate_password_policy=0;
长度
set global validate_password_length=1;
修改密码为 root123
ALTER USER 'root'@'localhost' IDENTIFIED BY 'root123';
开启远程访问
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
一定要刷新
FLUSH PRIVILEGES;
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