需求如下：研发代码里写死了地址 https://api.chehezhi.cn 现在在不想发布新代码的情况下修改地址为 https://api-st.chehezhi.cn

手动增加反向代理的header

先 ping api-st.chehezhi.cn 获取到服务器的ip

所以临时在pod里面新增了nginx 服务，配置如下，由于是代理https服务，还需要配置ssl证书，刚好有证书。。。

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server {
  listen 80;
  listen [::]:80;
  listen 443 ssl;
  listen [::]:443 ssl;
  ssl_certificate   /etc/nginx/ssl.crt;
  ssl_certificate_key /etc/nginx/ssl.key;
  ssl_session_timeout 5m;
  ssl_ciphers HIGH:!aNULL:!MD5;
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_prefer_server_ciphers on;
  server_name api.chehezhi.cn;
  client_max_body_size 1024m;


  location / {
    proxy_pass https://139.224.186.170;                        # ping 出来的域名IP
    proxy_set_header HOST api-st.chehezhi.cn;                  # 增加header HOST: api-st.chehezhi.cn
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }
}

优化写法

nginx提供了内置变量$proxy_host，优化写法为：

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server {
  listen 80;
  listen [::]:80;
  listen 443 ssl;
  listen [::]:443 ssl;
  ssl_certificate   /etc/nginx/ssl.crt;
  ssl_certificate_key /etc/nginx/ssl.key;
  ssl_session_timeout 5m;
  ssl_ciphers HIGH:!aNULL:!MD5;
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_prefer_server_ciphers on;
  server_name api.chehezhi.cn;
  client_max_body_size 1024m;

  location / {
    proxy_pass https://api-st.chehezhi.cn;
    proxy_set_header HOST $proxy_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }
}

本地绑定hosts

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127.0.0.1   api.chehezhi.cn

测试效果

这个时候两个域名访问效果一模一样了.

访问效果