4 Replies Latest reply on Aug 13, 2013 10:35 AM by vishu#13

    ColdFusion sites stop responding to http requests

    Steve@FSU

      I have 4 sites running under 1 instance of CF 10 STD. every now and then no regular pattern 2 of the smaller sites stop responding to http requests. Has anyone seen the issue before?  When this issue first occured I seen it happeneing durning the client variable purge I have since disabled the registry purge and placed the client variables in an SQL DB.  The issue stoped for about a week but now it has come back and not on any type of regular interval or pattern.

       

      Log files are no help at all.

       

       

      OS: Windows 2008 R2

      CPU: 1 vCPU

      RAM: 4GB

      IIS 7.5

       

      Server Product ColdFusion
      Version 10,0,10,284825
      Tomcat Version 7.0.23.0
      Edition Standard  
      Serial Number 118750067037389643140965  
      Operating System Windows Server 2008 R2  
      OS Version 6.1  
      Update Level /E:/ColdFusion10/cfusion/lib/updates/chf10000010.jar  
      Adobe Driver Version 4.1 (Build 0001)  
        • 1. Re: ColdFusion sites stop responding to http requests
          vishu#13 Level 3

          Hi Steve

           

          Web Server : IIS 7.5

          Application Server : ColdFusion 10 update level 10

          Running under 1 instacne : cfusion (say)

          Number of sites = 4

          2 of the smaller sites stop responding http requests and rest of the 2 are working fine.

           

          I believe this is the scenario here. Please correct, if I am wrong?

           

          All 4 sites have .cfm or only 2 of them which are not working?

          Have you configured connector with All or individual for all sites?

          On those 2 sites, if you have .cfm and .html, is the issue only with .cfm?

          Is the issue specific to some .cfm applications?

           

           

          There are various ways to check the behavior of requests on those 2 sites.

           

          Verbose Logging, You can use charles proxy which will let you know that is CodlFusion is the root cause for not serving those requests

           

          NOTE : Above 2 methods strictly during maintenance.

           

          If the traffic is too high on those 2 sites, check the tuning article : http://blogs.coldfusion.com/post.cfm/tuning-coldfusion-10-iis-connector-configuration

           

          Thanks

          VJ

          • 2. Re: ColdFusion sites stop responding to http requests
            Steve@FSU Level 1

            All 4 sites are running .cfm pages

            Connector is configured with individual sites.

            The issue appears to be .cfm although I have not tested the .html pages that are associated to the sites.  The Index page is .cfm  I will test html acces when the site goes down again.

            The 2 sites which stop responding are very small and composed of static .cfm pages "Not very complex".  

             

            The smaller sites thaty drop out usually generate 2 to 4 MB of log traffic a day.

            The other 2 sites are the heavy hitters with one generating around 200 to 300 MB log files a day and the other 20 to 30 MB a day.   These 2 heavy sites never drop out.

            • 3. Re: ColdFusion sites stop responding to http requests
              Steve@FSU Level 1

              Ok  the site just went down and I have confirmed that html and .cfm, all stop working for the 2 smaller sites.

              • 4. Re: ColdFusion sites stop responding to http requests
                vishu#13 Level 3

                Hi Steve,

                 

                Are you running individual app pool for every website?

                 

                Add a new site under IIS with it's own app pool. Add  .html pages only and test the behaviour. If everything works fine, then create connector for this new website and add the behaviour with both .html and .cfm.

                 

                If you encounter the same issue, make sure you collect the logs. If possible, collect the verbose logs : http://helpx.adobe.com/coldfusion/kb/enable-verbose-logging-coldfusion-10.html

                 

                NOTE : Test the above strictly during maintenance window so that production will not be affected at all.

                 

                Thanks

                VJ