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    Host management page show red exclamation for all hosts

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    FOG Problems
    client hostname ping
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    • C
      chris.dees
      last edited by

      Server
      • FOG Version: 1.40
      • OS: Ubuntu 16
      Client
      • Service Version: latest
      • OS: win 10 and 7
      Description

      I have a working FOG setup. I can ip boot and everything, the problem I am having is with the server(Linux) being able to ping and talk to the windows PCs in my domain. From the server, I can ping any IP address but if I try and ping a host name I get: unknown host
      From Windows machines, I can ping the server by IP and Hostname(added a dns entry to ping by hostname)
      I have dug around looking at the resolvconf files and if I open my /etc/resolv.conf file, It is:
      nameserver 127.0.0.1
      Search my-domain
      Nameserver my main DNS server

      If I delete the first line, I am then able to ping all of the windows machines. But of course this file is overwritten every few hours so that won’t work.

      I am using dnsmasq since our voip phone system uses option 66 and 67.

      I am only assuming that the hosts show up as red with an exclamation because the server can’t ping the clients hostname. Is this correct? Is there something I missed? Anything I can try?

      george1421G 1 Reply Last reply Reply Quote 0
      • S
        Sebastian Roth Moderator
        last edited by

        @chris-dees Ever since Ubuntu 12.04 the DNS configuration is managed by resolveconf, NetworkManager and dnsmasq. More details see here, here and here…

        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
        • george1421G
          george1421 Moderator @chris.dees
          last edited by george1421

          @chris.dees said in Host management page show red exclamation for all hosts:

          nameserver 127.0.0.1

          Dnsmasq is doing this to you. Or more precisely the ubuntu startup script for dnsmasq is doing this to you. @Quazz posted about this a while ago. The dnsmasq startup script is not honoring the flag in the config file to not have dnsmasq act as a dns server.

          ref: https://forums.fogproject.org/topic/7193/ubuntu-14-04-lts-with-dnsmasq-no-external-dns

          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!

          C 1 Reply Last reply Reply Quote 0
          • oldirtdogO
            oldirtdog
            last edited by

            I am getting this same thing… however, when I ping the hostname of a windows machine on my network, it replies just fine… my resolve.conf shows both of my local DNS servers and my default domain. I can ping google.com just fine as well. What’s strange is it was working just fine before I rebooted the FOG server. After the reboot, now I have red !'s on all of my hosts. Is there something I need to do to refresh them?

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

              @oldirtdog, @chris-dees Can you check the status of the FOG Ping service?

              systemctl -l status FOGPingHosts
              

              Can you provide the logs for the PingHosts service?

              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

              oldirtdogO 1 Reply Last reply Reply Quote 0
              • oldirtdogO
                oldirtdog @Tom Elliott
                last edited by

                @Tom-Elliott I am using Ubuntu 14.04 so, systemctl isn’t used… however, Service FOGPingHosts status shows it is running

                1 Reply Last reply Reply Quote 0
                • C
                  chris.dees @george1421
                  last edited by

                  @george1421 I think I fixed my issue. I wasn’t able to delete the nameserver 127.0.0.1 line but by modifying the resolv.conf.d/ head file, I was able to insert our local DNS nameserver to the top of the file. Hosts came up green after that. Now, After a whole 24hours and a reboot, all my hosts are still showing green. I have tried to boot to ip yet, is this a good fix or would this mess up dnsmasq at all?

                  george1421G 1 Reply Last reply Reply Quote 0
                  • george1421G
                    george1421 Moderator @chris.dees
                    last edited by

                    @chris.dees If it works for you, then it was the right fix. Run with it.

                    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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