Request History

• Restore to current request
• education/projects/catalytic_reactor_modeling
• posts/findByTag/8
• education/projects/predicting-surface-topology-in-iron-carbide-nanoparticles
• posts/view/29/Introduction+to+Electronic+Structure+Calculations:+The+variational+principle

Session

• 0(null)

Request

Cake Params

• plugin(null)
• controllerposts
• actionfindByTag
• named(empty)
• pass(array)
  • 015
• paging(array)
  • Post(array)
    • page1
    • current2
    • count2
    • prevPage(false)
    • nextPage(false)
    • pageCount1
    • order(array)
      • Post.createdDESC
    • limit24
    • options(array)
      • order(array)
        • Post.createdDESC
    • paramTypenamed
    • queryScope(null)

Post data

No post data.

Query string

No querystring data.

Cookie

To view Cookies, add CookieComponent to Controller

Current Route

• keys(array)
  • 0controller
  • 1action
• options(array)
  • defaultRoute(true)
• defaults(array)
  • plugin(null)
• template/:controller/:action/*

Sql Logs

Logs

View Variables

• tag(array)
  • Tag(array)
    • id15
    • nameApache
    • iconfa fa-cogs
    • colordefault
  • Post(array)
    • 0(array)
      • id15
      • title404 errors when using CakePHP plugin due to MultiViews module
      • contentThis short post is for everyone using CakePHP plugins and getting 404 errors when they try to access a Controller in their plugin. I spend 1 hour puzzling to find out what could possible be wrong with my plugin. Especially considering that the plugin was already running perfectly on several production servers. It turned out it had something to do with my Apache settings. What was happening? I created a plugin, for the sake of this post let's call it 'MyPlugin' and I wanted to access the controller 'MyController'. Normally, you would point your browser to http://localhost/my_app/my_plugin/my_controller, but instead of getting the expected page, I got a 404 error. Interestingly, the CakePHP logs did not show anything, meaning that the framework was not even being accessed. Eventually, I read the Apache logs and found this particular message: <pre> <code class="text"> [Mon Jun 09 09:19:06 2014] [error] [client 127.0.0.1] Negotiation: discovered file(s) matching request: /var/www/myapp (None could be negotiated)., referer: http://localhost/myapp/ </code> </pre> After some Googling I found out that it hat something to do with the MultiView module of Apache. Let me quote the effect of this module: >If the server receives a request for /some/dir/foo, if /some/dir has MultiViews enabled, and > /some/dir/foo does not exist, then the server reads the directory looking for files named > foo.*, and effectively fakes up a type map which names all those files, assigning them the > same media types and content-encodings it would have if the client had asked for one of > them by name. It then chooses the best match to the client's requirements. Apache was thus finding some physical file on a per-directory basis and then using Content Negotiation to try and figure out which file it should serve up based on the request headers. And, since I didn't have any file types configured for content negotiation, Apache didn't know how to respond and just returned a 404. In the end, I just disabled the MultiViews module in the Apache settings: <pre> <code lang="apache"> Options Indexes FollowSymLinks -MultiViews </code> </pre> and everything worked accordingly. This clearly shows that using the default settings of Apache without really knowing what they do it a very bad thing.
      • watched4879
      • active(true)
      • created2014-06-09 09:29:39
      • modified2015-06-30 17:39:04
    • 1(array)
      • id17
      • titleHow to host multiple sites from several servers behind a single IP address
      • content## Introduction Many of us host their own website from their home using some old computer or perhaps a [Raspberry PI](http://www.raspberrypi.org/help/faqs/). Using [VirtualHosting](http://en.wikipedia.org/wiki/Virtual_hosting) you could easily host 50+ sites from a single machine, given that said machine has enough space on its hard drive and enough processor power. What now if you want to deviate some of the load to another machine? This is where mod_proxy comes in. ### Situation sketch To exemplify, assume we have a set-up as the one in the image below. We have one router/modem combination which is connected to the internet and two [LAMP servers ](http://en.wikipedia.org/wiki/LAMP_(software_bundle)) which host three websites each. When a request on port 80 (www) comes in, our router automatically forwards this request to LAMP Box 1. If site 1-3 is requested, the LAMP Box 1 server handles the request and returns the website. The question now is how to forward the request to LAMP Box 2, when sites 4-6 would be requested.  ## Implementation The way this is done is fairly easy. You just add a VirtualHost instance to your Apache configuration similar to the one below. In the example code below, when a request comes in for domain.example.com; it is automatically forwarded to the LAMP Box2, which has IP address 192.168.2.201. LAMP Box2 then handles this request and returns the results back to LAMP Box1 which in turn parses the result to the router and so on. <pre> <code class="apache"> <VirtualHost *:80> ServerAdmin mail@example.com ServerName domain.example.com ProxyRequests Off <Proxy *> Require all granted </Proxy> ProxyPass / http://192.168.2.201:80/ ProxyPassReverse / http://192.168.2.201:80/ <Location /> Require all granted </Location> </VirtualHost> </code> </pre> ## Further reading * [mod_proxy in Apache 2.2](http://httpd.apache.org/docs/2.2/mod/mod_proxy.html) * [mod_proxy in Apache 2.4](http://httpd.apache.org/docs/2.4/mod/mod_proxy.html) * [VirtualHosts in Apache 2.2](http://httpd.apache.org/docs/2.2/vhosts/) * [VirtualHosts in Apache 2.4](http://httpd.apache.org/docs/2.4/vhosts/)
      • watched5026
      • active(true)
      • created2014-06-19 12:00:00
      • modified2015-06-30 17:33:50
• posts(array)
  • 0(array)
    • Post(array)
      • id17
      • titleHow to host multiple sites from several servers behind a single IP address
      • content## Introduction Many of us host their own website from their home using some old computer or perhaps a [Raspberry PI](http://www.raspberrypi.org/help/faqs/). Using [VirtualHosting](http://en.wikipedia.org/wiki/Virtual_hosting) you could easily host 50+ sites from a single machine, given that said machine has enough space on its hard drive and enough processor power. What now if you want to deviate some of the load to another machine? This is where mod_proxy comes in. ### Situation sketch To exemplify, assume we have a set-up as the one in the image below. We have one router/modem combination which is connected to the internet and two [LAMP servers ](http://en.wikipedia.org/wiki/LAMP_(software_bundle)) which host three websites each. When a request on port 80 (www) comes in, our router automatically forwards this request to LAMP Box 1. If site 1-3 is requested, the LAMP Box 1 server handles the request and returns the website. The question now is how to forward the request to LAMP Box 2, when sites 4-6 would be requested.  ## Implementation The way this is done is fairly easy. You just add a VirtualHost instance to your Apache configuration similar to the one below. In the example code below, when a request comes in for domain.example.com; it is automatically forwarded to the LAMP Box2, which has IP address 192.168.2.201. LAMP Box2 then handles this request and returns the results back to LAMP Box1 which in turn parses the result to the router and so on. <pre> <code class="apache"> <VirtualHost *:80> ServerAdmin mail@example.com ServerName domain.example.com ProxyRequests Off <Proxy *> Require all granted </Proxy> ProxyPass / http://192.168.2.201:80/ ProxyPassReverse / http://192.168.2.201:80/ <Location /> Require all granted </Location> </VirtualHost> </code> </pre> ## Further reading * [mod_proxy in Apache 2.2](http://httpd.apache.org/docs/2.2/mod/mod_proxy.html) * [mod_proxy in Apache 2.4](http://httpd.apache.org/docs/2.4/mod/mod_proxy.html) * [VirtualHosts in Apache 2.2](http://httpd.apache.org/docs/2.2/vhosts/) * [VirtualHosts in Apache 2.4](http://httpd.apache.org/docs/2.4/vhosts/)
      • watched5026
      • active(true)
      • created2014-06-19 12:00:00
      • modified2015-06-30 17:33:50
    • Comment(empty)
    • Tag(array)
      • 0(array)
        • id15
        • nameApache
        • iconfa fa-cogs
        • colordefault
  • 1(array)
    • Post(array)
      • id15
      • title404 errors when using CakePHP plugin due to MultiViews module
      • contentThis short post is for everyone using CakePHP plugins and getting 404 errors when they try to access a Controller in their plugin. I spend 1 hour puzzling to find out what could possible be wrong with my plugin. Especially considering that the plugin was already running perfectly on several production servers. It turned out it had something to do with my Apache settings. What was happening? I created a plugin, for the sake of this post let's call it 'MyPlugin' and I wanted to access the controller 'MyController'. Normally, you would point your browser to http://localhost/my_app/my_plugin/my_controller, but instead of getting the expected page, I got a 404 error. Interestingly, the CakePHP logs did not show anything, meaning that the framework was not even being accessed. Eventually, I read the Apache logs and found this particular message: <pre> <code class="text"> [Mon Jun 09 09:19:06 2014] [error] [client 127.0.0.1] Negotiation: discovered file(s) matching request: /var/www/myapp (None could be negotiated)., referer: http://localhost/myapp/ </code> </pre> After some Googling I found out that it hat something to do with the MultiView module of Apache. Let me quote the effect of this module: >If the server receives a request for /some/dir/foo, if /some/dir has MultiViews enabled, and > /some/dir/foo does not exist, then the server reads the directory looking for files named > foo.*, and effectively fakes up a type map which names all those files, assigning them the > same media types and content-encodings it would have if the client had asked for one of > them by name. It then chooses the best match to the client's requirements. Apache was thus finding some physical file on a per-directory basis and then using Content Negotiation to try and figure out which file it should serve up based on the request headers. And, since I didn't have any file types configured for content negotiation, Apache didn't know how to respond and just returned a 404. In the end, I just disabled the MultiViews module in the Apache settings: <pre> <code lang="apache"> Options Indexes FollowSymLinks -MultiViews </code> </pre> and everything worked accordingly. This clearly shows that using the default settings of Apache without really knowing what they do it a very bad thing.
      • watched4879
      • active(true)
      • created2014-06-09 09:29:39
      • modified2015-06-30 17:39:04
    • Comment(array)
      • 0(array)
        • emailifv@lawbird.com
        • commentThanks a million! I was losing hair over this! :)
        • id34
        • post_id15
        • created2015-03-17 11:20:03
    • Tag(array)
      • 0(array)
        • id15
        • nameApache
        • iconfa fa-cogs
        • colordefault
      • 1(array)
        • id6
        • nameCakePHP
        • iconpictonic-prog-cakephp
        • colorprimary
• title_for_layoutBlog
• meta_descriptionThis is the personal website of Ivo Filot. Ivo Filot is a theoretical chemist originating from the Netherlands.
• meta_keywordsIvo Filot, Personal website, Fischer-Tropsch, Microkinetic Modeling
• $request->data(empty)
• $this->validationErrors(array)
  • Tag(empty)
  • Post(empty)
  • Comment(empty)
  • PostsTag(empty)
• Loaded Helpers(array)
  • 0Auth
  • 1Navbar
  • 2Download
  • 3Flag
  • 4Markdown
  • 5Number
  • 6SimpleGraph
  • 7Paginator
  • 8DebugTimer
  • 9Toolbar
  • 10Html
  • 11Session
  • 12HtmlToolbar
  • 13Form

App Constants

CakePHP Constants

PHP Environment

Included Files

Include Paths

• 0/customers/e/2/e/ivofilot.nl/httpd.www/lib
• 2/usr/share/php
• 3-> /customers/e/2/e/ivofilot.nl/httpd.www/lib/Cake/

Included Files

• core(array)
  • Behavior(array)
    • 0CORE/Model/Behavior/TreeBehavior.php
  • Cache(array)
    • 0CORE/Cache/Cache.php
    • 1CORE/Cache/Engine/FileEngine.php
    • 2CORE/Cache/CacheEngine.php
  • Component(array)
    • 0CORE/Controller/Component/SessionComponent.php
    • 1CORE/Controller/Component/AuthComponent.php
    • 2CORE/Controller/Component/Auth/FormAuthenticate.php
    • 3CORE/Controller/Component/Auth/BaseAuthenticate.php
    • 4CORE/Controller/Component/PaginatorComponent.php
  • Config(array)
    • 0CORE/Config/routes.php
    • 1CORE/Config/config.php
  • Controller(array)
    • 0CORE/Controller/Controller.php
    • 1CORE/Controller/ComponentCollection.php
    • 2CORE/Controller/Component.php
  • Datasource(array)
    • 0CORE/Model/Datasource/CakeSession.php
    • 1CORE/Model/Datasource/Database/Mysql.php
    • 2CORE/Model/Datasource/DboSource.php
    • 3CORE/Model/Datasource/DataSource.php
  • Error(array)
    • 0CORE/Error/exceptions.php
    • 1CORE/Error/ErrorHandler.php
  • I18n(array)
    • 0CORE/I18n/I18n.php
    • 1CORE/I18n/L10n.php
  • Log(array)
    • 0CORE/Log/CakeLog.php
    • 1CORE/Log/LogEngineCollection.php
    • 2CORE/Log/Engine/FileLog.php
    • 3CORE/Log/Engine/BaseLog.php
    • 4CORE/Log/CakeLogInterface.php
  • Model(array)
    • 0CORE/Model/Model.php
    • 1CORE/Model/BehaviorCollection.php
    • 2CORE/Model/ConnectionManager.php
    • 3CORE/Model/ModelBehavior.php
  • Network(array)
    • 0CORE/Network/CakeRequest.php
    • 1CORE/Network/CakeResponse.php
  • Other(array)
    • 0CORE/bootstrap.php
    • 1CORE/basics.php
    • 2CORE/Core/App.php
    • 3CORE/Core/Configure.php
    • 4CORE/Core/CakePlugin.php
    • 5CORE/Event/CakeEventListener.php
    • 6CORE/Event/CakeEvent.php
    • 7CORE/Event/CakeEventManager.php
    • 8CORE/Core/CakeObject.php
  • Routing(array)
    • 0CORE/Routing/Dispatcher.php
    • 1CORE/Routing/Filter/AssetDispatcher.php
    • 2CORE/Routing/DispatcherFilter.php
    • 3CORE/Routing/Filter/CacheDispatcher.php
    • 4CORE/Routing/Router.php
    • 5CORE/Routing/Route/CakeRoute.php
    • 6CORE/Routing/Route/PluginShortRoute.php
  • Utility(array)
    • 0CORE/Utility/Hash.php
    • 1CORE/Utility/Inflector.php
    • 2CORE/Utility/ObjectCollection.php
    • 3CORE/Utility/Debugger.php
    • 4CORE/Utility/CakeText.php
    • 5CORE/Utility/ClassRegistry.php
  • View(array)
    • 0CORE/View/HelperCollection.php
• app(array)
  • Config(array)
    • 0APP/Config/core.php
    • 1APP/Config/bootstrap.php
    • 2APP/Config/routes.php
    • 3APP/Config/database.php
  • Controller(array)
    • 0APP/Controller/PostsController.php
    • 1APP/Controller/AppController.php
  • Model(array)
    • 0APP/Model/Tag.php
    • 1APP/Model/AppModel.php
    • 2APP/Model/Post.php
    • 3APP/Model/Comment.php
  • Other(array)
    • 0APP/webroot/index.php
• plugins(array)
  • DebugKit(array)
    • Component(array)
      • 0DebugKit/Controller/Component/ToolbarComponent.php
    • Plugin(array)
      • 0DebugKit/Lib/DebugMemory.php
      • 1DebugKit/Lib/Panel/HistoryPanel.php
      • 2DebugKit/Lib/DebugPanel.php
      • 3DebugKit/Lib/Panel/SessionPanel.php
      • 4DebugKit/Lib/Panel/RequestPanel.php
      • 5DebugKit/Lib/Panel/SqlLogPanel.php
      • 6DebugKit/Lib/Panel/TimerPanel.php
      • 7DebugKit/Lib/Panel/LogPanel.php
      • 8DebugKit/Lib/Log/Engine/DebugKitLog.php
      • 9DebugKit/Lib/Panel/VariablesPanel.php
      • 10DebugKit/Lib/Panel/EnvironmentPanel.php
      • 11DebugKit/Lib/Panel/IncludePanel.php
      • 12DebugKit/Lib/DebugTimer.php
  • Markdown(array)
    • Config(array)
      • 0Markdown/Config/bootstrap.php
    • Plugin(array)
      • 0Markdown/Lib/Error/MarkdownExceptions.php