nginx reverse proxy for google

nginx_google_version1.conf

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
    worker_connections  1024;
}

http {
	limit_req_zone $binary_remote_addr zone=setfreq:10m rate=10r/s;
	limit_req zone=setfreq burst=50 nodelay;
	
	upstream www.google.com {
		server 216.58.217.206:443   weight=34;
		server 172.217.4.142:443    weight=33;
		server 216.58.193.206:443   weight=33;
	}
	
	include       mime.types;
	default_type  application/octet-stream;
	
	#access_log  logs/access.log  main;

	sendfile           on;
	tcp_nopush         on;

	keepalive_timeout  65;
	types_hash_max_size 2048;

	gzip  on;
	gzip_vary          on;

	gzip_comp_level    6;
	gzip_buffers       16 8k;

	gzip_min_length    1000;
	gzip_proxied       any;
	gzip_disable       "msie6";

	gzip_http_version  1.0;

	gzip_types         text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript;

	server {
		listen 80 reuseport;
		server_name MY_DOMAIN.COM;
		#charset koi8-r;
		#access_log  logs/host.access.log  main;

		location ^~ /.well-known/acme-challenge/ {
			alias /var/www/challenges/;
			try_files $uri =404;
		}

		location / {
			rewrite ^/(.*)$ http://www.baidu.com permanent;
		}
		
		location /robots.txt {
			add_header Content-Type text/plain;
			return 200 "User-agent: *\nDisallow: /\n";
		}
	}

	server {
		server_name MY_DOMAIN.COM;
		listen 443 ssl http2 fastopen=2 reuseport;

		ssl on;
		ssl_certificate /root/ng/acme-tiny/chained.pem;
		ssl_certificate_key /root/ng/acme-tiny/domain.key;
		
		ssl_ciphers                EECDH+CHACHA20:EECDH+CHACHA20-draft:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5;
		ssl_prefer_server_ciphers  on;
		ssl_protocols              TLSv1 TLSv1.1 TLSv1.2;

		ssl_session_cache          shared:SSL:50m;
		ssl_session_timeout        1d;
		ssl_session_tickets        on;

		# oscp
		ssl_stapling               on;
		ssl_stapling_verify        on;
		ssl_trusted_certificate    /root/ng/acme-tiny/full_chained.pem;
		
		resolver 8.8.8.8;
		
		# https://github.com/cuber/ngx_http_google_filter_module
		location / {
			google on;
			google_scholar on;
			google_language "en";
		}
		
		# forbid spider
		if ($http_user_agent ~* "qihoobot|Baiduspider|Googlebot|Googlebot-Mobile|Googlebot-Image|Mediapartners-Google|Adsbot-Google|Feedfetcher-Google|Yahoo! Slurp|Yahoo! Slurp China|YoudaoBot|Sosospider|Sogou spider|Sogou web spider|MSNBot|ia_archiver|Tomato Bot"){
			return 403;
		}
		
		location /robots.txt {
			add_header Content-Type text/plain;
			return 200 "User-agent: *\nDisallow: /\n";
		}
	
		# forbid illegal domain request
		if ( $host != $server_name ) {
			return 403;
		}
	}
}

renew.sh

#! /bin/bash
# https://github.com/diafygi/acme-tiny

export ACME_TINY_DIR=/root/ng/acme-tiny

cd $ACME_TINY_DIR && python acme_tiny.py --account-key account.key --csr domain.csr --acme-dir /var/www/challenges/ > signed.crt || exit
cd $ACME_TINY_DIR && wget -O - https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem > intermediate.pem
cd $ACME_TINY_DIR && cat signed.crt intermediate.pem > chained.pem
cd $ACME_TINY_DIR && wget -O - https://letsencrypt.org/certs/isrgrootx1.pem > root.pem
cd $ACME_TINY_DIR && cat intermediate.pem root.pem > full_chained.pem

nginx -s reload
if [ $? = '0' ];then
    echo renew cert ok!
fi

blog here:

http://lixingcong.github.io/2016/07/31/nginx-reverse-proxy-for-google/