通過修改nginx的conf文件，輕松達到自定義HTTP Header的目的。

Nginx 使用 ngx_headers_more 模塊來增加、刪除出站、入站的 Header 信息。默認該模塊沒有加入到 Nginx 的源碼中，要想使用相關功能需要在編譯 Nginx 時加入該模塊。本人服務器中的 Nginx 在編譯時沒有加入該模塊,使用 -V 查看當前 Nginx 的編譯參數:

[root@z-dig ~]# nginx -V
nginx version: www.z-dig.com
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC)
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --user=www --group=www \
--with-http_ssl_module --with-http_stub_status_module
[root@z-dig ~]#

從官網下載模塊:

[root@z-dig ~]# cd /usr/local/src/
[root@z-dig src]# wget 、https://codeload.github.com/openresty/headers-more-nginx-module/zip/master\
 -O ./headers-more-nginx-module-master.zip
[root@z-dig src]# unzip headers-more-nginx-module-master.zip

重新編譯 Nginx 前，請求 www.z-dig.com 的 Header 信息:

[root@KVM ~]# curl -I www.z-dig.com
HTTP/1.1 200 OK
Server: www.z-dig.com
Date: Sat, 23 Apr 2016 11:25:15 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
X-Powered-By: PHP/5.6.17
Vary: Accept-Encoding, Cookie
Cache-Control: max-age=3, must-revalidate
WP-Super-Cache: Served supercache file from PHP

[root@KVM ~]#

現在重新編譯 Nginx ,平滑更新:

[root@z-dig ~]# cd /usr/local/src/nginx
[root@z-dig nginx]# make clean
rm -rf Makefile objs
[root@z-dig nginx]#./configure --prefix=/usr/local/nginx --user=www --group=www \
--with-http_ssl_module --with-http_stub_status_module \
--add-module=/usr/local/src/headers-more-nginx-module-master
[root@z-dig nginx]# make
[root@z-dig nginx]# make install
[root@z-dig nginx]# kill -s USR2 `cat /usr/local/nginx/logs/nginx.pid`
[root@z-dig nginx]# ps -ef|grep nginx
root      2017     1  0 Apr21 ?00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www       2018  2017  0 Apr21 ?00:00:30 nginx: worker process     
root     21717  2017  0 19:41 ?00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www      21718 21717  0 19:41 ?00:00:00 nginx: worker process     
root     21856 18312  0 19:45 pts/2    00:00:00 grep nginx
[root@z-dig nginx]# kill -s WINCH `cat /usr/local/nginx/logs/nginx.pid.oldbin`
[root@z-dig nginx]# ps -ef|grep nginx
root      2017     1  0 Apr21 ?00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
root     21717  2017  0 19:41 ?00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www      21718 21717  0 19:41 ?00:00:00 nginx: worker process     
root     21943 18312  0 19:49 pts/2    00:00:00 grep nginx
[root@z-dig nginx]# kill -s QUIT `cat /usr/local/nginx/logs/nginx.pid.oldbin`
[root@z-dig nginx]# ps -ef|grep nginx
root     21717     1  0 19:41 ?00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www      21718 21717  0 19:41 ?00:00:00 nginx: worker process     
root     22050 18312  0 19:54 pts/2    00:00:00 grep nginx
[root@z-dig nginx]#

到此 Nginx 已重新編譯并平滑升級成功。

在 Nginx 的配置文件中加入代碼，將之前請求網站返回 Header 中的 X-Powered-By 和 WP-Super-Cache 刪除:

more_clear_headers "X-Powered-By";
more_clear_headers "WP-Super-Cache";
[root@z-dig ~]# nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@z-dig ~]# nginx -s reload

再次請求查看效果:

[root@KVM ~]# curl -I www.z-dig.com
HTTP/1.1 200 OK
Server: www.z-dig.com
Date: Sat, 23 Apr 2016 12:03:04 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Vary: Accept-Encoding, Cookie
Cache-Control: max-age=3, must-revalidate

[root@KVM ~]#

經測試已成功將請求返回中的 Header 指定信息刪除。想了解 ngx_headers_more 的其他功能請訪問項目官網。

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