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Some hosts are unable to get an address through DHCP

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FOG Problems
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  • S
    Sebastian Roth Moderator
    last edited by May 17, 2016, 7:01 PM

    @mageta52 Unicast vs. multicast is like trying to explain the same topic to several people one at a time vs. giving a speech where the audience is more or less just listening. Sure you can unicast to a bunch of computers and I know people who use unicast for mass-deployment. So yes it works. But being kind of a network guy for me this feels like a huge wast of resources as your switch(es) need to shuffle around a lot of extra packets just for the sake of it.

    That said give unicast a try. Put a couple of your machines together in a group and start a unicast deploy for that group…

    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
    • W
      Wayne Workman @mageta52
      last edited by May 17, 2016, 8:20 PM

      @mageta52 A tip, I limit my fog server’s maximum connections to 2.

      So when I fire up a imaging task of 30 computers, only two run, the rest wait in line until a slot is open and then begin.

      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/

      M 1 Reply Last reply May 18, 2016, 4:07 PM Reply Quote 0
      • M
        mageta52 @Wayne Workman
        last edited by May 18, 2016, 4:07 PM

        @Wayne-Workman

        Why do you limit it to only 2 at a time? Is it faster?

        W 1 Reply Last reply May 18, 2016, 4:09 PM Reply Quote 0
        • W
          Wayne Workman @mageta52
          last edited by May 18, 2016, 4:09 PM

          @mageta52 For me, it is. It might be different for you.

          So, if you start 10 at once, each successive one that starts runs a bit slower.

          This slowness does not speed up if bandwidth is freed up by other hosts completing.

          So, the slowest one is always the last to finish and it takes forever.

          By limiting it to two here at my work, the two run at full speed, the only limiting factor is the target host’s speed of writing to disk.

          My recommendation is to see how many you can run simultaneously before you detect any slowdown with the later joining hosts. Minus one from that number and that’s the sweet spot.

          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/

          M 1 Reply Last reply May 18, 2016, 4:35 PM Reply Quote 0
          • M
            mageta52 @Wayne Workman
            last edited by May 18, 2016, 4:35 PM

            @Wayne-Workman So, we run open dhcp on our main network. What I’m not sure about, is how to point that towards the fog server if a client is PXE booting and looking to connect.

            T W 2 Replies Last reply May 18, 2016, 4:37 PM Reply Quote 0
            • T
              Tom Elliott @mageta52
              last edited by May 18, 2016, 4:37 PM

              @mageta52 Windows DHCP:

              DHCP Scope (global or individual) -> Option 66 = ip address/hostname of where to get PXE information (FOG Server IP Address).

              DHCP Scope (global or individual) -> Option 67 = filename to try to get from the PXE server (undionly.kkpxe).

              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 1
              • W
                Wayne Workman @mageta52
                last edited by May 18, 2016, 4:38 PM

                @mageta52 also, after doing what @Tom-Elliott said, you can setup UEFI support as well by following this: https://wiki.fogproject.org/wiki/index.php?title=BIOS_and_UEFI_Co-Existence

                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/

                M 1 Reply Last reply May 18, 2016, 6:20 PM Reply Quote 0
                • M
                  mageta52 @Wayne Workman
                  last edited by May 18, 2016, 6:20 PM

                  @Wayne-Workman Thanks guys, I’ll try to experiment with these options, again, it will probably have to wait until next week. The schedule is insane right now.

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                  • S
                    Sebastian Roth Moderator
                    last edited by May 18, 2016, 7:14 PM

                    @Wayne-Workman said:

                    So, if you start 10 at once, each successive one that starts runs a bit slower.
                    This slowness does not speed up if bandwidth is freed up by other hosts completing.

                    Unicast is just the wrong “tool” to send out lots of identical data to many clients… Sorry, couldn’t hold it back.

                    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

                    W 1 Reply Last reply May 18, 2016, 7:15 PM Reply Quote 1
                    • W
                      Wayne Workman @Sebastian Roth
                      last edited by May 18, 2016, 7:15 PM

                      @Sebastian-Roth I agree. But I also don’t have access to my building’s switches to fix multicast.

                      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
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