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Session Folder Grows 8 GB per 24 hours, how to fix?

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    Session Folder Grows 8 GB per 24 hours, how to fix?

    Just installed Ver 11 on Zebra Host WAS
    I have a total of 29.9 GB
    My site goes down because the session folder in the webroot grows by 4 gb per day.
    I can go in and delete all the files in the session folder to free up space and my site will work until they grow back
    Any ideas on how to stop this?
    Thanks
    Tony

    #2
    Re: Session Folder Grows 8 GB per 24 hours, how to fix?

    Session folders are removed when the session expires. Have you set your session lifetime to some long time that prevents them from ever expiring?

    Lenny Forziati
    Vice President, Internet Products and Technical Services
    Alpha Software Corporation

    Comment


      #3
      Re: Session Folder Grows 8 GB per 24 hours, how to fix?

      Lenny
      Session lifetime is set at 15 minutes
      Tony

      Comment


        #4
        Re: Session Folder Grows 8 GB per 24 hours, how to fix?

        Lenny or anyone else

        It is my understanding that a session folder is created when someone goes to my site and that when they leave my site the session folders is deleted. Is this correct? If so, then what would be the reason for my session folder not deleting anything?
        I deleted all folders in the session folder this morning at about 9:00am and now there are 950 folders consuming 5.41 GB of disk space.

        Thanks
        Tony

        Comment


          #5
          Re: Session Folder Grows 8 GB per 24 hours, how to fix?

          That sounds a great deal like a Denial of Service attack. Turn on just the access log and take a look after a short time. You may find a lot of unusual IP addresses, or requests that include ?A5wSessionID = in the URL. You will see the A5WSessionID in Live Preview requests, but not in normal requests, unless cookies are disabled on the server. If you find repeated requests from particular IP address, there are a number of free tools on the internet to track the source of the IP

          Comment


            #6
            Re: Session Folder Grows 8 GB per 24 hours, how to fix?

            Additionally, session folders that are created will be empty, and remain empty unless something in your application specifically puts something there. This means that the 950 folders themselves should take up no disk space at all. You will need to review the folders to see what is in them and then determine where those files are created.

            Lenny Forziati
            Vice President, Internet Products and Technical Services
            Alpha Software Corporation

            Comment


              #7
              Re: Session Folder Grows 8 GB per 24 hours, how to fix?

              As Lenny said, I was going to say you need to review what is in the folders. It is easy to determine how they get created by turning on basic Access logging and reviewing for multiple IP addresses. It cannot be the same "user" because session folders represent unique browser sessions. I bet you have one or more large files available for viewing, PDF or JPG, or similar, and the users are hitting those files, and that is what is in your session folders.
              Steve Wood
              See my profile on IADN

              Comment


                #8
                Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                It appears that Denial of Service may be what is going on. My session folder has grown to 7.5 GB since 9:00am this morning.
                95% of the folders has a sub folder named images that contain pictures we have available of our equipment. Each folder ranges from 2mb to 40bm.

                Lenny, if these folders should be empty, how are images ending up there and how do I stop this from happening?

                If the attack tools are like email spam programs, you can stop most of the spam, but you also stop some of the real mail. I don't want to do this with my customers.

                Thanks
                Tony

                Comment


                  #9
                  Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                  I doubt that it is a purpousful DOS attack, why would anyone target you? More likely is it Google, Yahoo, Bidu, etc. indexing your pages and others scouring your site to harvest email addresses. If you have made connections to systems like EBay, thoses hits can become significant.

                  Lenny didn't say the folders should be empty, but they should not contain images unless you are storing the images outside of the document root, and using xbasic to make them available for viewing. How are you making images available for viewing?
                  Steve Wood
                  See my profile on IADN

                  Comment


                    #10
                    Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                    Steve

                    My image folder is located

                    C:\A5V11\data\watts\images

                    Not sure about the how I am making the images available for viewing, I have 5 image reference fields for each peice of equipment

                    Hope this helps
                    Tony

                    Comment


                      #11
                      Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                      Then your images are outside of the doc root and Alpha copies them to the session folder for viewing. The number one thing you need to do is use an image editor to reduce the size and DPI of your images. They should all be less than one MB each. Next is to limit how many images appear in a grid. Its obvious your site is being index OR you are lucky to have lots of potential customers reviewing the site. The images appear to be very large, and or too many per page. If that doesn't fix you need to get the images inside the doc root which takes some reprogramming. But even then you need the images to be as small as possible to reduce consumed bandwidth.
                      Steve Wood
                      See my profile on IADN

                      Comment


                        #12
                        Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                        Steve,

                        Please permit a "newbie" question from a "lurker" hoping to learn something about Tony's issue. What do you mean by the term "doc root"? And, would you point me to a discussion of its use in the helps? Thanks. -- tom

                        Comment


                          #13
                          Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                          Tom,

                          The document root is the a5webroot - where the web pages and components live on the server.
                          Peter
                          AlphaBase Solutions, LLC

                          [email protected]
                          https://www.alphabasesolutions.com


                          Comment


                            #14
                            Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                            I was wrong about my data and image location,

                            It is:
                            C:\A5v10\data\watts\images

                            not
                            C:\A5V11\data\watts\images

                            I upgraded to Ver 11 a week ago and that's when this issue began or maybe just the timing with the google - yahoo indexing

                            Would this cause Alpha to copy them to the session folder for viewing, because I did not have this problem until I upgraded to Ver 11.

                            Tony

                            Comment


                              #15
                              Re: Session Folder Grows 8 GB per 24 hours, how to fix?

                              Tony, both are outside the root. Interesting that it started after upgrade. I'd have to test but I am not in my office. As an aside, the practice of changing the root folder name (a5v10/a5v11) should be abolished, it is entirely unnecessary, even in a mixed version environment.
                              Steve Wood
                              See my profile on IADN

                              Comment

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