一、Apache的作用

在web被访问时通常使用http://的方式
http://            ##超文本传输协议

http://    超文本传输协议提供软件：
Apache
nginx
stgw
jfe
Tengine

二、Apache的安装以及启用

dnf install httpd.x86_64  -y    ##安装httpd

firewall-cmd --permanent --add-service=http  ##将http服务加到防火墙的服务名单中

firewall-cmd --permanent --add-service=https ##将https服务加到防火墙的服务名单中

firewall-cmd --reload   ##重启防火墙，让刚才的操作生效

systemctl enable --now httpd ##启动httpd服务

vim /var/www/html/index.html ##编辑文件

三、Apache的基本配置
配置文件：/etc/httpd/conf/httpd.conf
端口设置:
Listen:8080

默认发布文件：

vim /var/www/html/westos.html##编辑文件

168行左右
<IfModule dir_module>
DirectoryIndex westos.html index.html

firefox查询:172.25.254.137

默认发布目录：
mkdir /westos_apache
vim /westos_apache/index.html

semanage fcontext -a -t httpd_sys_content_t '/westos_apache(/.*)?'

vim /etc/httpd/conf/httpd.conf :
123行左右
#DocumentRoot "/var/www/html"
DocumentRoot "/westos_apache"
<Directory "/westos_apache">
           Require all granted
</Directory>

firefox查询：172.25.254.137

四、Apache访问控制
1）ip限制：
vim /etc/httpd/conf/httpd.conf ：
DocumentRoot "/var/www/html"
#DocumentRoot "/westos_apache"
<Directory "/var/www/html/westos">
           Order Deny,Allow
           Deny from all
           Allow from 172.25.254.137
</Directory>
systemctl restart httpd

2）用户限制：
cd /etc/httpd/
mkdir westos ##建立查看文件
vim /westos/index.html
htpasswd -cm .htpasswd admin ##建立用户（环境）

vim /etc/httpd/conf/httpd.conf：
<Directory "/var/www/html/westos">
           AuthUserFile  （用户建立环境在那就指向那里）
           AuthName "Please input username and password"
           AuthType basic
#           Require user  admin
           Require valid-user

systemctl restart httpd

五、Apache的虚拟主机
建立域名、相关文件
mkdir -p /var/www/vhost/westos.org/{news,music,yifan.org}
echo news.westos.org> /var/www/vhost/westos.org/news/index.html
echo music.westos.org> /var/www/vhost/westos.org/music/index.html
echo yifan.westos.org> /var/www/vhost/westos.org/yifan/index.html
echo yifan.org.westos.org> /var/www/vhost/westos.org/yifan.org/index.html

编辑配置文件(服务器)
<VirtualHost _default_:80>
        DocumentRoot /var/www/html
        CustomLog logs/default.log combined
</VirtualHost>

<VirtualHost *:80>
        ServerName music.westos.org
        DocumentRoot /var/www/vhost/westos.org/music
        CustomLog logs/music.log combined
</VirtualHost>

<VirtualHost *:80>
        ServerName news.westos.org
        DocumentRoot /var/www/vhost/westos.org/news
        CustomLog logs/news.log combined
</VirtualHost>

<VirtualHost *:80>
        ServerName yifan.org.westos.org
        DocumentRoot /var/www/vhost/westos.org/'yifan'
        CustomLog logs/yifan.org.log combined
</VirtualHost>

手动解析域名（浏览器在哪里就在那里写）
vim /etc/hosts:
172.25.254.137 www.westos.org music.westos.org news.westos.org yifan.org.westos.org

测试：
firefox：www.westos.org | music.westos.org | news.westos.org | yifan.org.westos.org（任意一个）

六、Apache的语言支持
#php#
vim /var/www/html/index.php
<?php
    phpinfo();
?>

dnf install php -y
systemctl restart httpd
firefox http://192.168.0.11/index.php

#cgi#
mkdir /var/www/html/cgidir
vim /var/www/html/cgidir/index.cgi
#!/usr/bin/perl
print "Content-type: text/html\n\n";
print `date`;

systemctl restart httpd

vim /etc/httpd/conf.d/vhost.conf

<Directory "/var/www/html/cgidir">
    Options +ExecCGI
    AddHandler cgi-script .cgi
</Directory>

firefox http://192.168.0.11/cgidir/index.cgi

#wsgi#
书写wsgi的测试文件
vim /var/www/html/wsgi/index.wsgi
def application(env, westos):
    westos('200 ok',[('Content-Type', 'text/html')])
    return [b'hello  westos ahhahahahah!']

dnf install python3-mod_wsgi
systemctl restart httpd

vim /etc/httpd/conf.d/vhost
<VirtualHost *:80>
    ServerName wsgi.westos.org
    WSGIScriptAlias / /var/www/html/wsgi/index.wsgi
</VirtualHost>

七、Apache的加密访问

mkdir /etc/httpd/tls ##建立目录用来存放锁和钥匙

openssl req --newkey rsa:2048 -nodes -sha256 -keyout /etc/httpd/tls/westos.org.key -x509 -days 365 -out /etc/httpd/tls/westos.org.crt   ##建立锁和钥匙

vim /etc/httpd/conf.d/vhost.conf