• Recent
  • Unsolved
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Register
  • Login
  • Recent
  • Unsolved
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Register
  • Login

Using dumb switch to troubleshoot imaging, network related

Scheduled Pinned Locked Moved Solved
General Problems
5
37
10.3k
Loading More Posts
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • T
    Tom Elliott
    last edited by Tom Elliott Nov 17, 2016, 1:54 PM Nov 17, 2016, 7:54 PM

    Just shedding light that udp, unless using multicast, is limited only to tftp traffic and even then is minimal at best

    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

    M 1 Reply Last reply Nov 17, 2016, 10:38 PM Reply Quote 1
    • G
      george1421 Moderator @Mastriani
      last edited by Nov 17, 2016, 8:19 PM

      @Mastriani said in Using dumb switch to troubleshoot imaging, network related:

      I have Fog servers at both buildings, suffering the same issues. I will connect as you specified first thing in the morning, and let the capture run.

      This is an interesting puzzle here. You should not have this issue (which you know all ready). When I run into this puzzles I remember what one of my university professors told me when debugging an electrical circuit. “You have first find out where the problem isn’t to find out where the problem is” So you start where the problem should be and then work your way away from where the problem isn’t to where it is. So far his statement has worked for me well.

      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!

      M 1 Reply Last reply Nov 17, 2016, 10:42 PM Reply Quote 0
      • M
        Mastriani @Tom Elliott
        last edited by Mastriani Nov 17, 2016, 4:43 PM Nov 17, 2016, 10:38 PM

        @Tom-Elliott said in Using dumb switch to troubleshoot imaging, network related:

        Just shedding light that udp, unless using multicast, is limited only to tftp traffic and even then is minimal at best

        Is there something else then, in the protocol stack, that should be looked at more closely? The switches currently have igmp snooping disabled, by factory default.

        G 1 Reply Last reply Nov 17, 2016, 10:47 PM Reply Quote 0
        • M
          Mastriani @george1421
          last edited by Mastriani Nov 17, 2016, 4:42 PM Nov 17, 2016, 10:42 PM

          @george1421 said in Using dumb switch to troubleshoot imaging, network related:

          This is an interesting puzzle here. You should not have this issue (which you know all ready). When I run into this puzzles I remember what one of my university professors told me when debugging an electrical circuit. “You have first find out where the problem isn’t to find out where the problem is” So you start where the problem should be and then work your way away from where the problem isn’t to where it is. So far his statement has worked for me well.

          If you have a better approach, then I am all … well, reading glasses, as it were. Resolution is what is most important. Hopefully I can also make use of Mr. Workman’s talents as well, and grab a few new neuronal connections in the process.

          1 Reply Last reply Reply Quote 0
          • G
            george1421 Moderator @Mastriani
            last edited by Nov 17, 2016, 10:47 PM

            @Mastriani said in Using dumb switch to troubleshoot imaging, network related:

            Is there something else then, in the protocol stack, that should be looked at more closely? The switches currently have igmp snooping disabled, by factory default.

            igmp snooping is only used if you are using multicasting. We are only talking about unicast image deployment, Right?

            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!

            M 1 Reply Last reply Nov 17, 2016, 10:49 PM Reply Quote 1
            • M
              Mastriani @george1421
              last edited by Nov 17, 2016, 10:49 PM

              @george1421 said in Using dumb switch to troubleshoot imaging, network related:

              igmp snooping is only used if you are using multicasting. We are only talking about unicast image deployment, Right?

              Yes, unicast only, the IGMP comment was just for reference. I am attempting to be as inclusive as possible with anything that your team might deem relevant, or not and helping to refine the possible scope.

              1 Reply Last reply Reply Quote 0
              • W
                Wayne Workman @Mastriani
                last edited by Wayne Workman Nov 17, 2016, 5:13 PM Nov 17, 2016, 11:09 PM

                @Mastriani said in Using dumb switch to troubleshoot imaging, network related:

                the one I typically use is Win 10, and carries too much information/applications to be reformatted.

                There is no need to reformat. You can use a Live Linux disk, meaning you boot from a CD or USB drive, and run the OS completely from that, without ever changing the contents of your local HDD. See this for more information: https://www.ubuntu.com/download/desktop/try-ubuntu-before-you-install

                Now a days I default to using Linux to solve any sort of problem that isn’t specifically a Windows problem, just because I’ve become so accustomed to the tools available to Linux. If you’re into high quality Information Technology / Computer Science software at a low price, Linux is the literal jackpot.

                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 Nov 17, 2016, 11:14 PM Reply Quote 0
                • M
                  Mastriani @Wayne Workman
                  last edited by Nov 17, 2016, 11:14 PM

                  @Wayne-Workman said in Using dumb switch to troubleshoot imaging, network related:

                  There is no need to reformat. You can use a Live Linux disk, meaning you boot from a CD or USB drive, and run the OS completely from that, without ever changing the contents of your local HDD. See this for more information: https://www.ubuntu.com/download/desktop/try-ubuntu-before-you-install

                  Now a days I default to using Linux to solve any sort of problem that isn’t specifically a Windows problem, just because I’ve become so accustomed to the tools available to Linux. If you’re into high quality Information Technology / Computer Science software at a low price, Linux IS the literal jackpot.

                  Thank you Mr. Workman, understood. I will burn a disc in the morning. Because of my ignorance, how then do I “install” iperf and ethtool functionally, or is this all accomplished via virtual environment? Yes, my moron is showing currently.

                  W 1 Reply Last reply Nov 17, 2016, 11:18 PM Reply Quote 0
                  • W
                    Wayne Workman @Mastriani
                    last edited by Wayne Workman Nov 17, 2016, 5:19 PM Nov 17, 2016, 11:18 PM

                    @Mastriani Stop down-talking yourself.

                    apt-get install iperf ethtool -y

                    apt-get is Ubuntu’s preferred package manager. There is also apt and dpkg

                    install is one of many commands to do. There is also remove and others.

                    iperf and ethtool are package names.

                    -y means do whatever needs done to just install it and don’t ask for permission, this is my permission here.

                    Fedora 24’s package manager is dnf but the rest is the same. In CentOS 7, it’s yum. In Arch Linux, it’s pacman

                    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 Nov 17, 2016, 11:22 PM Reply Quote 0
                    • M
                      Mastriani @Wayne Workman
                      last edited by Nov 17, 2016, 11:22 PM

                      @Wayne-Workman said in Using dumb switch to troubleshoot imaging, network related:

                      @Mastriani Stop down-talking yourself.

                      apt-get install iperf ethtool -y

                      apt-get is Ubuntu’s preferred package manager. There is also apt and dpkg

                      install is one of many commands to do. There is also remove and others.

                      iperf and ethtool are package names.

                      -y means do whatever needs done to just install it and don’t ask for permission, this is my permission here.

                      Fedora 24’s package manager is dnf but the rest is the same. In CentOS 7, it’s yum. In Arch Linux, it’s pacman

                      Objectively, better down than up, and this is 3 years of frustration speaking, having attempted to learn and resolve this solo. I will post back when the necessary conditions have been met. Thank you.

                      T 1 Reply Last reply Nov 17, 2016, 11:26 PM Reply Quote 0
                      • T
                        Tom Elliott @Mastriani
                        last edited by Nov 17, 2016, 11:26 PM

                        @Mastriani The UDP issues might have come up due to 0.29. The NFS mount was not using the TCP proto (of which it does now).

                        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

                        M 2 Replies Last reply Nov 17, 2016, 11:45 PM Reply Quote 1
                        • W
                          Wayne Workman
                          last edited by Nov 17, 2016, 11:26 PM

                          I’ll also be looking at some of the same stuff that George already touched on. And I’ll of course be using the same “near to far” thing he was talking about, this is just how to properly troubleshoot.

                          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 2 Replies Last reply Nov 17, 2016, 11:47 PM Reply Quote 0
                          • M
                            Mastriani @Tom Elliott
                            last edited by Nov 17, 2016, 11:45 PM

                            @Tom-Elliott said in Using dumb switch to troubleshoot imaging, network related:

                            @Mastriani The UDP issues might have come up due to 0.29. The NFS mount was not using the TCP proto (of which it does now).

                            The current servers are clean install of FOG 1.0.2 / Ubuntu 14.04 LTS, because other members of the team had targeted the old server as being the issue, as opposed to the change-over of network hardware. It was a post hoc ergo propter hock situation, having also migrated from FOG .32 / Ubuntu 10.04 to FOG 1.0.1 / Ubuntu 12.04. This was done during the network hardware change-over.

                            I doubted the correlation as causation, the only issue with 12.04, (appears to be fairly common), was installing the Unity desktop environment. Which was later removed and replaced with LXDE, preferable to my mind.

                            1 Reply Last reply Reply Quote 0
                            • M
                              Mastriani @Wayne Workman
                              last edited by Nov 17, 2016, 11:47 PM

                              @Wayne-Workman said in Using dumb switch to troubleshoot imaging, network related:

                              I’ll also be looking at some of the same stuff that George already touched on. And I’ll of course be using the same “near to far” thing he was talking about, this is just how to properly troubleshoot.

                              I will most certainly appreciate the learning process and your time.

                              1 Reply Last reply Reply Quote 0
                              • M
                                Mastriani @george1421
                                last edited by Mastriani Nov 18, 2016, 11:59 AM Nov 18, 2016, 3:46 PM

                                @george1421 said in Using dumb switch to troubleshoot imaging, network related:

                                @Mastriani Well the 755 to 390s are not the most powerful systems but they should not take 30 minutes to image either.

                                When you run you test, please try to get an accurate time to deploy and the actual image size. That way we can calculate the true throughput. The number from part clone is a bit deceiving.

                                The compression value is a scale from 0 (no compression) to 9 (maximum compression). That also means:
                                0 = maximum file size on the FOG server and over the network but images faster since the client doesn’t need to decompress the image.
                                9 = smaller file size on the FOG server and network but images slower since the client must squeeze all of the air possible out of the image to capture and deploy it.

                                5 is a middle of the road between larger file and higher cpu requirements on the client.

                                FOG server and client machine on same switch. Image capture started at 10:28 a.m. EDT
                                Dell OptiPlex 780
                                Dual Core
                                4Gb PC3 DDR RAM
                                GbE Broadcom NIC, 1 Gb/s as per device manager
                                34.3 Gb image
                                Started: 2.8 Gb/s, 10 mins. into capture, speed degraded to 1 Gb/s, 11%, if the partclone measurement is believable.
                                20 mins, 620Mb/s, 18%
                                30 mins, 450Mb/s, 39%
                                40 mins, 395Mb/s, 49%
                                50 mins, 325Mb/s, 57%
                                60 mins, 315Mb/s, 61%
                                70 mins, 295Mb/s, 65%
                                80 mins, 272Mb/s, 69%
                                90 mins, 261Mb/s, 72%
                                100 mins, 250Mb/s, 77%
                                110 mins, 237Mb/s, 81%
                                120 mins, 223Mb/s, 88%
                                130 mins, 215Mb/s, 93%
                                140 mins, 222Mb/s, 97%
                                148 mins, 209Mb/s, 100%
                                Total time: 2 hr, 31 mins, 34.3 Gbs transferred, 12:59 p.m. EDT

                                1 Reply Last reply Reply Quote 0
                                • M
                                  Mastriani @Wayne Workman
                                  last edited by Nov 18, 2016, 3:49 PM

                                  @Wayne-Workman said in Using dumb switch to troubleshoot imaging, network related:

                                  I’ll also be looking at some of the same stuff that George already touched on. And I’ll of course be using the same “near to far” thing he was talking about, this is just how to properly troubleshoot.

                                  iperf and ethtool installed on FOG server, temporary interruption for educator request, will setup the laptop on the same switch with live disc, shortly.

                                  W 1 Reply Last reply Nov 18, 2016, 4:05 PM Reply Quote 0
                                  • W
                                    Wayne Workman @Mastriani
                                    last edited by Wayne Workman Nov 18, 2016, 10:09 AM Nov 18, 2016, 4:05 PM

                                    @Mastriani When you’re ready, send me an IM. Forums posts are too slow for this sort of help.

                                    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 Nov 18, 2016, 4:09 PM Reply Quote 0
                                    • M
                                      Mastriani @Wayne Workman
                                      last edited by Nov 18, 2016, 4:09 PM

                                      @Wayne-Workman said in Using dumb switch to troubleshoot imaging, network related:

                                      @Mastriani When you’re ready, send me an IM. The forums are too slow for this sort of help.

                                      FOG server is Ubuntu 14.04 LTS, match version on disc, or not relevant?

                                      W 1 Reply Last reply Nov 18, 2016, 4:10 PM Reply Quote 0
                                      • W
                                        Wayne Workman @Mastriani
                                        last edited by Nov 18, 2016, 4:10 PM

                                        @Mastriani use 16.04 for the live disk, there’s no reason not to.

                                        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
                                        • M
                                          Mastriani @Tom Elliott
                                          last edited by Nov 18, 2016, 4:11 PM

                                          @Tom-Elliott said in Using dumb switch to troubleshoot imaging, network related:

                                          @Mastriani The UDP issues might have come up due to 0.29. The NFS mount was not using the TCP proto (of which it does now).

                                          Mr. Elliott,

                                          Does FOG use jumbo frames? Fixed rate, negotiated, or not relevant?

                                          T 1 Reply Last reply Nov 18, 2016, 4:34 PM Reply Quote 0
                                          • 1
                                          • 2
                                          • 2 / 2
                                          2 / 2
                                          • First post
                                            21/37
                                            Last post

                                          219

                                          Online

                                          12.0k

                                          Users

                                          17.3k

                                          Topics

                                          155.2k

                                          Posts
                                          Copyright © 2012-2024 FOG Project