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    Verification for downloaded kernel and initramdisk

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    • S
      Sebastian Roth Moderator
      last edited by

      As we see trouble with corrupt bzImage/init.xz files quite often I wonder if we can add some kind of verification. Debugging this kind of error takes a lot of asking questions forth and back and causes a lot of confusion on both sides.

      I haven’t really come up with a good idea yet. One way could be to download a checksum file with the kernel images and verify those checksums once in the installation process. Or we could calculate checksums every time a client requests bootmenu.class.php (probably slows down the bootup which is not good I think).

      Any ideas on this?

      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

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      • Tom ElliottT
        Tom Elliott
        last edited by

        Done.

        I created a checksum checker. We call https://fogproject.org/inits/index.php or https://fogproject.org/kernels/index.php and a generated sha512 sum of the files is returned back. In the installer I download these files in bin/checksum_init/checksums and bin/checksum_kernel/checksums. It only gives us a checksum of the init{,_32}.xz and bzImage{,32} files.

        Hopefully this will 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! 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

        Wayne WorkmanW 1 Reply Last reply Reply Quote 1
        • S
          Sebastian Roth Moderator
          last edited by Sebastian Roth

          You are the man Tom!! Hopefully this can prevent some of the kernel/init issues in the future.

          Let me know if I can add something to it as well.

          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
          • Wayne WorkmanW
            Wayne Workman @Tom Elliott
            last edited by

            @Tom-Elliott Amazing. I’ve been wanting this for a while.

            Now, if the check sums don’t match, does it re-attempt the downloads? What about checksums for the new client?

            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/

            Tom ElliottT 1 Reply Last reply Reply Quote 1
            • Tom ElliottT
              Tom Elliott @Wayne Workman
              last edited by

              @Wayne-Workman I’m not doing client checksums. This is because we’re not keeping the client downloads on the server, and I don’t know if github has a dynamically generated hash to work from. I imagine they do but I’m not familiar with the api to call for.

              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

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              • S
                Sebastian Roth Moderator
                last edited by

                Just stumbled upon this by accident: http://ipxe.org/cmd/imgverify

                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

                Wayne WorkmanW 1 Reply Last reply Reply Quote 0
                • Wayne WorkmanW
                  Wayne Workman @Sebastian Roth
                  last edited by

                  @Sebastian-Roth I guess that would be to verify that the kernel and inits are transferred from the fog server to the network booting computer correctly?

                  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
                  • S
                    Sebastian Roth Moderator
                    last edited by Sebastian Roth

                    Exactly. Possibly this could be of help on those weird UEFI devices which blow up with a kernel panic right after iPXE handed off to the kernel but I am not sure yet. I even don’t really know how this works at all. How to generate the signature…?! Well found some information, looks complicated: http://ipxe.org/crypto

                    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

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                    • Tom ElliottT
                      Tom Elliott
                      last edited by

                      While I don’t think it will help anything, the only thing I can think of causing the issue is the init=/sbin/init flag that’s being passed. I’ve now only made it so that this flag will only send if the platform is bios, and maybe this will help out?

                      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
                      • S
                        Sebastian Roth Moderator
                        last edited by

                        Why init= only on BIOS machines? Did I miss something here? Is this known to cause issues on UEFI?

                        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

                        Tom ElliottT 1 Reply Last reply Reply Quote 0
                        • Tom ElliottT
                          Tom Elliott @Sebastian Roth
                          last edited by

                          @Sebastian-Roth the only reason I’m thinking that is because it’s the only thing I added that I can think of that could be giving the bad sector. I don’t know if it causes issues or not and I’m leaning more that it likely isn’t. But just seeing if maybe it will work?

                          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
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