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基础设施
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1 安装apache
①安装
[root@localhost ~]# yum install httpd
②启动
[root@localhost ~]# systemctl start httpd
2 安装php7.2
①卸载之前安装的php
[root@localhost ~]# yum remove php
②列出所有php相关的rpm包，然后强制移除
[root@localhost ~]# rpm -qa|grep php
[root@localhost ~]# rpm -e xxx --nodeps
③强制更改源（linux不存在php7.2的源）
[root@localhost ~]# rpm -e xxx --nodeps
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
[root@localhost ~]# rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
③yum安装php72w和各种扩展
yum -y install php72w php72w-cli php72w-common php72w-devel php72w-embedded php72w-fpm php72w-gd php72w-mbstring php72w-mysqlnd php72w-opcache php72w-pdo php72w-xml
④安装posix扩展
[root@localhost ~]# yum install php72w-posix
3 安装mysql5.7
①下载源安装包
[root@localhost ~]# wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
②安装源
[root@localhost ~]# yum localinstall mysql57-community-release-el7-8.noarch.rpm
③安装mysql5.7
[root@localhost ~]# yum install mysql-community-server
④启动mysql,设置开机启动
[root@localhost ~]# systemctl start mysqld
[root@localhost ~]# systemctl enable mysqld
[root@localhost ~]# systemctl daemon-reload
⑤修改本地root密码
mysql安装完成之后，在/var/log/mysqld.log文件中给root生成了一个默认密码。通过下面的方式找到root默认密码，然后登录mysql进行修改
[root@localhost ~]# grep 'temporary password' /var/log/mysqld.log
登录修改密码
[root@localhost ~]# mysql -u root -p
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';
或者
mysql> set password for 'root'@'localhost'=password('MyNewPass4!');
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