LAMP含义

• LAMP:Linux + Apache + Mysql + PHP
• LNMP：Linux + Nginx + MySQL + php-fpm LNMP 架构（组合）
• LNMPA：Linux + Nginx(80) + MySQL + PHP + Apache Nginx 代理方式

部署步骤

部署前

关闭防火墙和selinux

1. 关闭防火墙(暂时关闭)

   systemctl stop firewalld
   firewall-cmd --state

2. 关闭selinux(永久关闭)
   2.1. 修改/etc/selinux/config文件内容， 将SELIUNX=enforcing修改为SELINUX=disabled
   修改后的文件内容如下：

   # This file controls the state of SELinux on the system.
   # SELINUX= can take one of these three values:
   #     enforcing - SELinux security policy is enforced.
   #     permissive - SELinux prints warnings instead of enforcing.
   #     disabled - No SELinux policy is loaded.
   SELINUX=disabled
   # SELINUXTYPE= can take one of these three values:
   #     targeted - Targeted processes are protected,
   #     minimum - Modification of targeted policy. Only selected processes are protected.
   #     mls - Multi Level Security protection.
   SELINUXTYPE=targeted

   查询当前服务器上是否安装apache/mysql/php

   rpm -qa |grep httpd
   rpm -qa |grep mysq
   rpm -qa |grep php

   没有安装对应包的话，应该没有内容显示

安装Apache

1. 使用yum命令安装httpd软件包
   yum install -y httpd
2. 安装完成后，修改配置文件:/etc/httpd/conf/httpd.conf，新增一行ServerName Localhost:80
   最后文件中相关部分内容如下：

   ServerAdmin root@localhost
   #
   # ServerName gives the name and port that the server uses to identify itself.
   # This can often be determined automatically, but we recommend you specify
   # it explicitly to prevent problems during startup.
   #
   # If your host doesn't have a registered DNS name, enter its IP address here.
   #
   #ServerName www.example.com:80
   ServerName Localhost:80
   #
   # Deny access to the entirety of your server's filesystem. You must
   # explicitly permit access to web content directories in other
   # <Directory> blocks below.
   #

3. 使用systemctl将httpd设置开机自启，并重启httpd服务

   systemctl enable httpd
   systemctl restart httpd

   4.最后查看是否有80端口监听

   netstat -ntlp 80

   有类似下面的内容就表示安装成功
   tcp6 0 0 :::80 :::* LISTEN 27769/httpd
   或者可以输入服务器对应的ip看有没有apache的初始页面

安装mysql

1. 先从官网上下载安装包
   wget https://repo.mysql.com//mysql80-community-release-el8-1.noarch.rpm

2. 添加mysql的yum源存储库
   rpm -ivh mysql80-community-release-el8-1.noarch.rpm

3. 安装mysql
   yum install mysql-server

4. 将mysql设置为开机自启并重启mysql

   systemctl enable mysqld.service
   systemctl restart mysqld.service

5. 查看mysql是否安装成功
   netstat -ntlp

   [root@localhost html]# netstat -ntlp | grep mysqld
   tcp6       0      0 :::33060                :::*                    LISTEN      26132/mysqld
   tcp6       0      0 :::3306                 :::*                    LISTEN      26132/mysqld

6. 初始化数据库
   mysql_secure_installation
   下面是几个需要手动选择的地方

   Would you like to setup VALIDATE PASSWORD component?
   Press y|Y for Yes, any other key for No: y

   Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0

   # 这里密码需要输的稍微复杂些
   Please set the password for root here.
   New password:
   Re-enter new password:

   Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y

   Remove anonymous users? (Press y|Y for Yes, any other key for No) : y

   Disallow root login remotely? (Press y|Y for Yes, any other key for No) : n

   Remove test database and access to it? (Press y|Y for Yes, any other key for No) : n

   Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y

   完了后使用mysql -u root -p来检查能否正确连接到MYSQL数据库

安装PHP

1. yum安装PHP
   yum -y install php
2. 重启httpd服务
   更改php配置一定要重启httpd服务
3. 测试LAMP环境是否可用
   3.1 cd /var/www/html
   3.2 vim index.php
   3.3 在index.php中编写php代码

   <?php
   echo 'hello world';
   ?>

4. 在浏览器上输入服务器ip地址，查看能否向下面这样显示