如何通過ebextensions配置文件添加nginx緩存控制標頭？

Question

首先，我很困惑。我已經ssh'ed到我們的彈性beanstalk實例來細讀nginx所在的位置等等，而且看起來我找不到它。

顯然，執行curl命令產量頭，如：

Content-Encoding: gzip 
Content-Type: text/css 
Date: Wed, 23 Oct 2013 20:33:53 GMT 
Last-Modified: Wed, 23 Oct 2013 18:59:04 GMT 
Server: nginx/1.2.3 
transfer-encoding: chunked 
Connection: keep-alive 

所以我認爲nginx的是那裏的地方。我試圖發現正確的位置，所以我可以通過ebextensions注入一個配置文件。

從本質上講，我想確保我在遙遠的未來，這似乎並沒有被工作集高速緩存控制：

03-nginx.config: 
    files: 
     "/etc/nginx/conf.d/custom.conf" : 
     mode: "000777" 
     owner: ec2-user 
     owner: ec2-user 
     content: | 
      location ~ ^/assets/ { 
       expires 1y; 
       add_header Cache-Control public; 

       add_header ETag ""; 
       break; 
      } 

看來，nginx通過運行。

[ec2-user@ip-10-196-221-244 support]$ pwd 
/var/app/support 
[ec2-user@ip-10-196-221-244 support]$ ls pids 
passenger.pid passenger.pid.lock 
[ec2-user@ip-10-196-221-244 support]$ cat pids/passenger.pid 
1781 
[ec2-user@ip-10-196-221-244 support]$ ps -eaf | grep 1781 
root  1781  1 0 Sep25 ?  00:00:00 nginx: master process /var/lib/passenger-standalone/3.0.17-x86_64-ruby1.9.3-linux-gcc4.6.2-1002/nginx-1.2.3/sbin/nginx -c /tmp/passenger-standalone.1704/config -p /tmp/passenger-standalone.1704/ 
webapp 1782 1781 0 Sep25 ?  00:00:57 nginx: worker process                                      
ec2-user 26387 25743 0 10:53 pts/0 00:00:00 grep 1781 

更新 我使用的鐵軌側CloudFront的配置此配置。儘管標題不符合理想的建議，但總比沒有好。

#-------------------------------------------------------------------------------- 
    # CDN 
    # Enable serving of images, stylesheets, and JavaScripts from an asset server 
    # http://thediscoblog.com/blog/2013/05/01/the-rails-cloudfront-and-heroku-performance-hat-trick/ 
    # http://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Expiration.html 
    # http://www.mnot.net/cache_docs/ 
    # Check with http://redbot.org/ 
    # - set asset host 
    #-------------------------------------------------------------------------------- 
    config.action_controller.asset_host = "http://cdn.staging.acme.com" 
    config.assets.compress = true # Compress JavaScripts and CSS 
    config.assets.compile = false # Don't fallback to assets pipeline if a precompiled asset is missed 
    config.assets.digest = true # Generate digests for assets URLs 
    # must do this so we can inject the proper cache-control headers for cloudfront, served very few times anyways... 
    #config.serve_static_assets = true 
    config.static_cache_control = "public, max-age=#{1.year.to_i}" 

仍然懸而未決的問題： 我缺少什麼？我應該使用什麼位置爲獨立乘客注入額外的nginx配置？

Answer 1

您可以通過修改「$（passenger-config --root）/ resources/templates/standalone」中的config.erb來更改爲乘客獨立生成的nginx配置。請參閱4.3節http://www.modrails.com/documentation/Users%20guide%20Standalone.html。修改它

選項包括：

1. 完全有.ebextensions/.config文件替換：叫
2. 使用命令嘗試在地方改變它，一些Perl的正則表達式

這兩者中的任何一個都應該在第一次通過hooks/preinit啓動應用程序服務器之前執行。嘗試將其應用於正在運行的實例可能無效。你可以殺死你現有的EC2實例，自動縮放會產生另一個實例。