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Multitasking - Not All Clients Start Tasking

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  • J
    Joe Gill
    last edited by Jun 21, 2018, 6:12 PM

    @Tom-Elliott

    0_1529604691373_52a02cde-1d49-4643-b991-491bc65f5eac-image.png

    The last line repeats until it finished.

    If you would like the entire log file I can post it.

    T 1 Reply Last reply Jun 21, 2018, 6:20 PM Reply Quote 0
    • T
      Tom Elliott @Joe Gill
      last edited by Jun 21, 2018, 6:20 PM

      @joe-gill So you’re saying some machines work fine, not all of them though?

      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

      Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

      Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

      J 1 Reply Last reply Jun 21, 2018, 6:21 PM Reply Quote 0
      • T
        Tom Elliott
        last edited by Jun 21, 2018, 6:21 PM

        Sorry for reasking the questions you’ve already answered, just trying to understand the whole situation.

        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

        Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

        Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

        1 Reply Last reply Reply Quote 0
        • T
          Tom Elliott
          last edited by Jun 21, 2018, 6:21 PM

          I’m assuming, for the log you posted, there were only 27 hosts in that group that needed the tasking?

          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

          Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

          Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

          1 Reply Last reply Reply Quote 0
          • J
            Joe Gill @Tom Elliott
            last edited by Jun 21, 2018, 6:21 PM

            @tom-elliott

            That is correct.

            Some machines start multitasking like normal and others sit on the Partclone screen. All of them make it to the Partclone screen at the same time.

            1 Reply Last reply Reply Quote 0
            • T
              Tom Elliott
              last edited by Jun 21, 2018, 7:12 PM

              So chatting with @Joe-Gill We narrowed down what the problem.

              First, the backstory.

              So Multicast tasks would work for some machines, but not all. And, to add to that, it was always the same machines that failed to work. If the machines that failed were subsequently put into their own group, they would multicast without issue.

              This lead me to ask if the machines that would fail were on a different switch from the rest of the machines, and indeed @Joe-Gill found out that this was the case. They are using Meraki switches and they replaced a few of them. Those that were replaced do not work fluidly with the older switches in place.

              @Joe-Gill keep me truthful here, but this is the gist of this information.

              Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

              Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

              Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

              G J 2 Replies Last reply Jun 21, 2018, 8:44 PM Reply Quote 1
              • G
                george1421 Moderator @Tom Elliott
                last edited by Jun 21, 2018, 8:44 PM

                @tom-elliott Also be aware in another thread we had to make some changes to the www.conf file (adding the memory limit of 256MB). He also had 3 versions of php and php-fpm installed. When I left the session (a few days ago) he had no more than 6 active php-fpm worker threads for 24 hosts in a multicast. Memory and CPU usage looked good, but understand I was only focused on why php-fpm was behaving so badly on his system.

                @Joe-Gill Check to see if igmp snooping is turned on, for your network switches. That will allow the switches to handle multicast traffic a bit more intelligently.

                Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                J 1 Reply Last reply Jun 21, 2018, 8:48 PM Reply Quote 0
                • J
                  Joe Gill @Tom Elliott
                  last edited by Jun 21, 2018, 8:44 PM

                  @tom-elliott

                  That is excactly correct. I am reaching out to our vendor to find out if their are any known issues here. I will post back for others to know.

                  For the record we are using Meraki MS225-48FP and Meraki MS42P.

                  Thanks for helping be troubleshoot this @Tom-Elliott .

                  1 Reply Last reply Reply Quote 0
                  • J
                    Joe Gill @george1421
                    last edited by Jun 21, 2018, 8:48 PM

                    @george1421 Thanks! I’ll check it out.

                    1 Reply Last reply Reply Quote 0
                    • J
                      Joe Gill
                      last edited by Jun 21, 2018, 8:54 PM

                      @george1421
                      IGMP snooping is enabled.

                      G 1 Reply Last reply Jun 21, 2018, 8:56 PM Reply Quote 0
                      • G
                        george1421 Moderator @Joe Gill
                        last edited by Jun 21, 2018, 8:56 PM

                        @joe-gill said in Multitasking - Not All Clients Start Tasking:

                        @george1421
                        IGMP snooping is enabled.

                        For all switches (even meraki), on the vlan where the machines are multicasting?

                        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                        J 1 Reply Last reply Jun 21, 2018, 9:00 PM Reply Quote 0
                        • J
                          Joe Gill @george1421
                          last edited by Jun 21, 2018, 9:00 PM

                          @george1421
                          It is set like that for the default stack.

                          1 Reply Last reply Reply Quote 0
                          • J
                            Joe Gill
                            last edited by Jun 25, 2018, 9:12 PM

                            @george1421
                            The only switches we have on campus now are Meraki or dumb switches. Most things are on Meraki’s. The vendor turned “port flooding” off. I’m going to check but I believe I’ll still have the issue. I do not think that’s it. I’ll post back as soon as I know.

                            1 Reply Last reply Reply Quote 0
                            • J
                              Joe Gill
                              last edited by Jun 28, 2018, 8:04 PM

                              @george1421
                              @Tom-Elliott

                              To update this issue… I had a network engineer look at this issue. He determined that we had our multicast setting set to flood all ports. So far disabling this has fixed the majority of our multicasting issues.

                              One thing we did notice is that we had one old switch going to one of our labs that seems to fail on multicast and not unicast. Multicast works everywhere else with that image. We will be replacing that switch at some point but I believe that switch is the culprit. It’s an older 10/100 “dumb” HP switch (commercial grade).

                              So far I have not experienced any other issues with that version of FOG.

                              Thanks again for all the help!

                              G 1 Reply Last reply Jun 28, 2018, 8:27 PM Reply Quote 0
                              • G
                                george1421 Moderator @Joe Gill
                                last edited by Jun 28, 2018, 8:27 PM

                                @joe-gill Well in a way I’m glad this issue was a FOG specific one, but rather an infrastructure. I can say multicasting is a bit of a fickle beast no matter what imaging technology you are using. When it works, its great.

                                It sounds like your network was configured for dense mode multicasting where it would just send the mutlicast stream to all ports even if there were no multicast subscribers.

                                Thank you for providing solid feedback and sticking with this issue until it is resolved.

                                Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                1 Reply Last reply Reply Quote 0
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