Apache2如何监听多个域名

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最近博客迁移，采用Docker镜像WordPress完成新网站搭建，利用镜像中自带的Apache2完成全站点Https，参考【WordPress建站经验】docker-wordpress开启子域名形式多站点，并开启https访问 文章中第二节部分。因为开启多站点，不同子域名的SSL证书需要单独申请，因此需要使用Apache2监听不同域名，单独配置安全证书。

示例代码

# 端口80
<VirtualHost *:80>
  ServerName peiluming.com # 监听域名
  <Directory "/var/www/html"> 
    RewriteEngine on
    RewriteBase /
    # FORCE HTTPS
    RewriteCond %{HTTPS} !=on
    RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L] # 重写http到https
  </Directory>
  ServerAdmin webmaster@localhost # 管理员邮箱
  DocumentRoot /var/www/html # 网站根目录
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

<VirtualHost *:80>
  ServerName blog.peiluming.com # 监听域名
  <Directory "/var/www/html"> 
    RewriteEngine   on
    RewriteBase /
    # FORCE HTTPS
    RewriteCond %{HTTPS} !=on
    RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L] # 重写http到https
  </Directory>
  ServerAdmin webmaster@localhost
  DocumentRoot /var/www/html
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

# 端口443
<VirtualHost *:443>
  ServerAdmin webmaster@localhost
  ServerName peiluming.com
  DocumentRoot /var/www/html
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined
  SSLEngine on
  SSLCertificateFile      /etc/apache2/peiluming.com_bundle.pem
  SSLCertificateKeyFile   /etc/apache2/peiluming.com.key
  <FilesMatch "\.(?:cgi|shtml|phtml|php)$">
      SSLOptions +StdEnvVars
  </FilesMatch>
  <Directory /usr/lib/cgi-bin>
      SSLOptions +StdEnvVars
  </Directory>
</VirtualHost>

<VirtualHost *:443>
  ServerAdmin webmaster@localhost
  ServerName blog.peiluming.com
  DocumentRoot /var/www/html
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined
  SSLEngine on
  SSLCertificateFile      /etc/apache2/blog.peiluming.com_bundle.pem
  SSLCertificateKeyFile   /etc/apache2/blog.peiluming.com.key
  <FilesMatch "\.(?:cgi|shtml|phtml|php)$">
      SSLOptions +StdEnvVars
  </FilesMatch>
  <Directory /usr/lib/cgi-bin>
      SSLOptions +StdEnvVars
  </Directory>
</VirtualHost>

说到底，和Nginx有点相似，但是这个不支持 连续写多个域名，类似 ServerName peiluming.com www.peiluming.com ，不过可以有另外的一种变种写法，如下：

<VirtualHost *:80>
    ServerName peiluming.com
    ServerAlias www.peiluming.com
    # rest of your configuration
</VirtualHost>