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Fog: multicasting across subnets

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  • K
    K.Hays @Wayne Workman
    last edited by K.Hays Apr 15, 2016, 7:43 AM Apr 15, 2016, 1:40 PM

    @Wayne-Workman When i try to enable FOGMulticastManager it tells me it fails.
    Edit: Never mind, i stopped it then restarted it and now it says it’s running.

    W 1 Reply Last reply Apr 15, 2016, 1:43 PM Reply Quote 0
    • W
      Wayne Workman @K.Hays
      last edited by Apr 15, 2016, 1:43 PM

      @K.Hays said in Fog: multicasting across subnets:

      @Wayne-Workman When i try to enable FOGMulticastManager it tells me it fails.

      Inside of /opt/fog/log there are logs for the multicast manager. They are also accessible via the log viewer. Try to start the service, and then look at the logs - share what you find.

      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!
      Daily Clean Installation Results:
      https://fogtesting.fogproject.us/
      FOG Reporting:
      https://fog-external-reporting-results.fogproject.us/

      K 3 Replies Last reply Apr 15, 2016, 1:49 PM Reply Quote 0
      • K
        K.Hays @Wayne Workman
        last edited by K.Hays Apr 15, 2016, 8:13 AM Apr 15, 2016, 1:49 PM

        @Wayne-Workman It says the image file was not found. Which is weird because we were able to unicast using that file.
        specifically it said the task was found but it failed to execute because the image was not found.

        1 Reply Last reply Reply Quote 0
        • K
          K.Hays @Wayne Workman
          last edited by Apr 15, 2016, 1:57 PM

          This post is deleted!
          1 Reply Last reply Reply Quote 0
          • K
            K.Hays @Wayne Workman
            last edited by Apr 15, 2016, 3:38 PM

            @Wayne-Workman I found another log for multicast manager and it says “unable to locate udp sender”

            W 1 Reply Last reply Apr 15, 2016, 6:33 PM Reply Quote 0
            • W
              Wayne Workman @K.Hays
              last edited by Apr 15, 2016, 6:33 PM

              @K.Hays Notifying a few folks that might be able to help.

              @Tom-Elliott
              @Sebastian-Roth
              @Wolfbane8653
              @cspence

              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!
              Daily Clean Installation Results:
              https://fogtesting.fogproject.us/
              FOG Reporting:
              https://fog-external-reporting-results.fogproject.us/

              1 Reply Last reply Reply Quote 1
              • K
                K.Hays
                last edited by Apr 18, 2016, 6:27 PM

                Well here is the updated situation. As you know not too long ago we set up a fog server that could unicast and do all that across subnets no problem. Theoretically it should have been able to multicast (since we had a fog server up and running before which was able to do so, but it is currently and permanently inaccessible) but it would pause at the partclone screen. Then we decided to try storage nodes, as making modifications to the switches may be complicated at the moment. So we set up two different storage nodes in two different buildings, both with trunk and both set up AS storage nodes. They were loaded correctly and were also able to unicast too and from them, the images were physically stored on them also. When we tried to multicast though, it stopped again at the partclone screen. I’m assuming this is most likely a network issue, which we will be more able to solve this summer, as during the school year it gets complicated. But i just wanted to check to see if there is another solution, or possibly something that I am not doing correctly. Sorry for the influx of questions but it would be great if this was ready by the time we started summer maintenance.

                W T 2 Replies Last reply Apr 18, 2016, 8:25 PM Reply Quote 0
                • W
                  Wayne Workman @K.Hays
                  last edited by Apr 18, 2016, 8:25 PM

                  @K.Hays if you go to Image Management and click on one of your images, and then click on “Storage Group” on the left, what do you see?

                  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!
                  Daily Clean Installation Results:
                  https://fogtesting.fogproject.us/
                  FOG Reporting:
                  https://fog-external-reporting-results.fogproject.us/

                  K 1 Reply Last reply Apr 18, 2016, 8:32 PM Reply Quote 0
                  • K
                    K.Hays @Wayne Workman
                    last edited by Apr 18, 2016, 8:32 PM

                    @Wayne-Workman It depends on the image. For the ones linked to the storage node, i.e the middle school group we have, it says Middle School. But the checkbox isn’t checked, should it be? Thats all thats in there though

                    1 Reply Last reply Reply Quote 0
                    • T
                      Tom Elliott @K.Hays
                      last edited by Apr 18, 2016, 10:08 PM

                      @K.Hays what is the OS you are using on these nodes? What are the actual interface names and are they reflected properly in the db.

                      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

                      K 1 Reply Last reply Apr 20, 2016, 1:40 PM Reply Quote 0
                      • K
                        K.Hays @Tom Elliott
                        last edited by Apr 20, 2016, 1:40 PM

                        @Tom-Elliott Im using 14.04 on the nodes also. The interface names on both are eth2. One of the nodes defaulted to eth0 in the database and the other we manually changed to eth2. I believe we got the same results regardless.

                        1 Reply Last reply Reply Quote 0
                        • K
                          K.Hays
                          last edited by Apr 25, 2016, 3:14 PM

                          For now we just decided to put a fog server in each building because summer is approaching quickly and we need a better alternative to ghost. Advice is still welcome if there is any to give at this point. Thanks for the help so far.

                          W 1 Reply Last reply Apr 25, 2016, 6:33 PM Reply Quote 0
                          • W
                            Wayne Workman @K.Hays
                            last edited by Wayne Workman Apr 25, 2016, 12:34 PM Apr 25, 2016, 6:33 PM

                            @K.Hays My advice, don’t multicast. fog unicasting is stupid fast. And - most multicast issues are network problems that unicast does not suffer from.

                            FYI - I used to use fog with multicast. Then I got over that, because unicast is just so fast. I image an entire lab with unicast in under 30 minutes. 40GB image.

                            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!
                            Daily Clean Installation Results:
                            https://fogtesting.fogproject.us/
                            FOG Reporting:
                            https://fog-external-reporting-results.fogproject.us/

                            K 1 Reply Last reply Apr 27, 2016, 1:48 PM Reply Quote 0
                            • S
                              Sebastian Roth Moderator
                              last edited by Apr 26, 2016, 7:21 PM

                              @K-Hays Have you done any multicast tests by hand yet? https://wiki.fogproject.org/wiki/index.php?title=Troubleshoot_Downloading_-_Multicast

                              You might want to stick to unicast if you cannot make it work but if you want to deploy the same image to a lot of computers then multicast is one of the nicest ways of doing it I suppose.

                              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
                              • K
                                K.Hays @Wayne Workman
                                last edited by Apr 27, 2016, 1:48 PM

                                @Wayne-Workman The problem is the amount of bandwidth that would take up. Unless unicast doesn’t take any more bandwidth than multicast would then that’s not an option. We would be multicasting up to 30+ computers at a time sometimes and I’m afraid unicasting would take down the network in those situations. and Sebastion i ran through that troubleshoot page already, but thank you.

                                W 1 Reply Last reply Apr 27, 2016, 2:34 PM Reply Quote 0
                                • S
                                  Sebastian Roth Moderator
                                  last edited by Apr 27, 2016, 2:00 PM

                                  @K-Hays Have you had a look at the process list on your FOG server after starting a multicast task? Please show us the output of ps ax | grep udp on your FOG server while a multicast task is waiting!

                                  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

                                  K 1 Reply Last reply Apr 27, 2016, 2:55 PM Reply Quote 0
                                  • W
                                    Wayne Workman @K.Hays
                                    last edited by Apr 27, 2016, 2:34 PM

                                    @K.Hays FOG has a queuing functionality. I set my fog server to run 2 tasks at max.

                                    So when I image 30 computers and start them all up, 2 start, 28 wait in line. when the 2 finish, another 2 go.

                                    This is automatic.

                                    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!
                                    Daily Clean Installation Results:
                                    https://fogtesting.fogproject.us/
                                    FOG Reporting:
                                    https://fog-external-reporting-results.fogproject.us/

                                    1 Reply Last reply Reply Quote 0
                                    • K
                                      K.Hays @Sebastian Roth
                                      last edited by Apr 27, 2016, 2:55 PM

                                      @Sebastian-Roth ill post this the next time I’m at a separate building so that i can run the test. Might be a little while.
                                      @Wayne-Workman That’s awesome actually i didn’t know that. How many computers can fog do max in this way, do you think?

                                      W 1 Reply Last reply Apr 27, 2016, 2:57 PM Reply Quote 0
                                      • W
                                        Wayne Workman @K.Hays
                                        last edited by Apr 27, 2016, 2:57 PM

                                        @K.Hays said in Fog: multicasting across subnets:

                                        That’s awesome actually i didn’t know that. How many computers can fog do max in this way, do you think?

                                        As many as you wish. I limit mine to 2 to keep things moving along quickly - that way no computer takes hours, but each one takes about 5 minutes and they take turns. This is also easier on the server’s HDD as well.

                                        For image deployment to many hosts at once using unicast, the server’s HDD speed is critical, along with it’s network speed. The switch’s internal throughput is also important.

                                        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!
                                        Daily Clean Installation Results:
                                        https://fogtesting.fogproject.us/
                                        FOG Reporting:
                                        https://fog-external-reporting-results.fogproject.us/

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