upstream voucher{
  # 第一个后端服务器
  server 172.29.42.89:13000 backup;
  # 新增第二个后端服务器
  server 172.29.42.90:13000;
}

server {
    listen       9200;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;

    location  / {
        root   /usr/share/nginx/html/web;
        index  index.html index.html;
        try_files $uri $uri/ /index.html;
    }

    location /voucher {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_set_header referer $http_referer;
        proxy_pass http://voucher;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}