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    Primary Domain Controller dns server host records are missing

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    • G
      Ghani last edited by

      Dear team,

      My customer have Primary Domain controller and Additional domain controller. All domain clients are assigning IP address through DHCP server.All domain clients have preferred dns is PDC and
      Secondary DNS is ADC. Primary DNS server have existing host records are missing and Primary DNS server unable to update new DHCP IP address on DNS host entry. But , ADC DNS server is working fine and up-to-date update DHCP client IP address entry on revalent host records. Primary DNS server all host records are missing exclude SOA records & Name server.

      Kindly provide help, how to recovery primary DNS server with all existing host records ?

      Thanks
      Ghani

      dbeato 1 Reply Last reply Reply Quote 1
      • Dashrender
        Dashrender last edited by

        What do the logs show on the first DC?

        FYI, there aren't Primary or Secondary DCs anymore, those went out with Windows NT.

        G 1 Reply Last reply Reply Quote 1
        • scottalanmiller
          scottalanmiller last edited by

          You normally would have DNS in a cluster and not recover an individual node.

          G 1 Reply Last reply Reply Quote 0
          • Obsolesce
            Obsolesce last edited by

            If you have a system state backup you can restore the primary DNS zone... Or any DNS zone that was at least replicated to that DNS server

            1 Reply Last reply Reply Quote 0
            • dbeato
              dbeato @Ghani last edited by

              @ghani said in Primary Domain Controller dns server host records are missing:

              Primary DNS server all host records are missing exclude SOA records & Name server.
              Kindly provide help, how to recovery primary DNS server with all existing host records ?

              You will need to check which one is the FSMO role holder, then move them if needed to the functional DC. Recreate your DC and be on your way.

              1 Reply Last reply Reply Quote 1
              • G
                Ghani @scottalanmiller last edited by

                @scottalanmiller

                primary dns server have fsmo roles. secondary dns server have all dns server host records. But, primary dns server dont have existing host records... if it is possible to recovery all existing host records again in primary dns server ??

                1 Reply Last reply Reply Quote 0
                • G
                  Ghani @Dashrender last edited by

                  @dashrender

                  Event ID 4013

                  hi , primary domain controller event viewer shows below error event id:

                  “The DNS server is waiting for Active Directory Domain Services (AD DS) to signal that the initial synchronization of the directory has been completed. The DNS server service cannot start until the initial synchronization is complete because critical DNS data might not yet be replicated onto this domain controller. If events in the AD DS event log indicate that there is a problem with DNS name resolution, consider adding the IP address of another DNS server for this domain to the DNS server list in the Internet Protocol properties of this computer. This event will be logged every two minutes until AD DS has signaled that the initial synchronization has successfully completed.”

                  scottalanmiller Dashrender 2 Replies Last reply Reply Quote 0
                  • scottalanmiller
                    scottalanmiller @Ghani last edited by

                    @ghani said in Primary Domain Controller dns server host records are missing:

                    @dashrender

                    Event ID 4013

                    hi , primary domain controller event viewer shows below error event id:

                    “The DNS server is waiting for Active Directory Domain Services (AD DS) to signal that the initial synchronization of the directory has been completed. The DNS server service cannot start until the initial synchronization is complete because critical DNS data might not yet be replicated onto this domain controller. If events in the AD DS event log indicate that there is a problem with DNS name resolution, consider adding the IP address of another DNS server for this domain to the DNS server list in the Internet Protocol properties of this computer. This event will be logged every two minutes until AD DS has signaled that the initial synchronization has successfully completed.”

                    Yes, in this setup, AD does the underlying sync of DNS.

                    G 1 Reply Last reply Reply Quote 0
                    • Dashrender
                      Dashrender @Ghani last edited by

                      @ghani said in Primary Domain Controller dns server host records are missing:

                      @dashrender

                      Event ID 4013

                      hi , primary domain controller event viewer shows below error event id:

                      “The DNS server is waiting for Active Directory Domain Services (AD DS) to signal that the initial synchronization of the directory has been completed. The DNS server service cannot start until the initial synchronization is complete because critical DNS data might not yet be replicated onto this domain controller. If events in the AD DS event log indicate that there is a problem with DNS name resolution, consider adding the IP address of another DNS server for this domain to the DNS server list in the Internet Protocol properties of this computer. This event will be logged every two minutes until AD DS has signaled that the initial synchronization has successfully completed.”

                      Now look in the AD DS logs and see if there are errors there.

                      1 Reply Last reply Reply Quote 0
                      • G
                        Ghani @scottalanmiller last edited by

                        @scottalanmiller

                        if possible to export dns server records from secondary dns server and import dns server records on primary dns server.

                        scottalanmiller 1 Reply Last reply Reply Quote 0
                        • scottalanmiller
                          scottalanmiller @Ghani last edited by

                          @ghani said in Primary Domain Controller dns server host records are missing:

                          @scottalanmiller

                          if possible to export dns server records from secondary dns server and import dns server records on primary dns server.

                          Not for AD, no, I don't believe so.

                          G 1 Reply Last reply Reply Quote 0
                          • G
                            Ghani @scottalanmiller last edited by

                            @scottalanmiller

                            any possible solution to fix the issues ?

                            scottalanmiller 1 Reply Last reply Reply Quote 0
                            • scottalanmiller
                              scottalanmiller @Ghani last edited by

                              @ghani said in Primary Domain Controller dns server host records are missing:

                              @scottalanmiller

                              any possible solution to fix the issues ?

                              AD is the issue, AD handles the database replication. You need to look at AD and figure out why it is failing.

                              Dashrender 1 Reply Last reply Reply Quote 1
                              • Dashrender
                                Dashrender @scottalanmiller last edited by

                                @scottalanmiller said in Primary Domain Controller dns server host records are missing:

                                @ghani said in Primary Domain Controller dns server host records are missing:

                                @scottalanmiller

                                any possible solution to fix the issues ?

                                AD is the issue, AD handles the database replication. You need to look at AD and figure out why it is failing.

                                Right - look at the AD logs and find out if there are any errors for you to correct.

                                1 Reply Last reply Reply Quote 1
                                • momurda
                                  momurda last edited by momurda

                                  Have you restarted DNS Client and DNS Server services on the DC with the problem? That should take care of it

                                  G 1 Reply Last reply Reply Quote 0
                                  • Obsolesce
                                    Obsolesce last edited by

                                    You need your primary DNS zone back. I'd start by trying to restore that Primary DNS zone from backup.

                                    G 1 Reply Last reply Reply Quote 1
                                    • G
                                      Ghani @Obsolesce last edited by

                                      @tim_g

                                      they dont have any backups

                                      dbeato scottalanmiller Obsolesce 3 Replies Last reply Reply Quote 0
                                      • G
                                        Ghani @momurda last edited by

                                        @momurda

                                        ya we restarted already but issue the same

                                        1 Reply Last reply Reply Quote 0
                                        • dbeato
                                          dbeato @Ghani last edited by

                                          @ghani said in Primary Domain Controller dns server host records are missing:

                                          @tim_g

                                          they dont have any backups

                                          Thack is a bad story 😞

                                          1 Reply Last reply Reply Quote 0
                                          • scottalanmiller
                                            scottalanmiller @Ghani last edited by

                                            @ghani said in Primary Domain Controller dns server host records are missing:

                                            @tim_g

                                            they dont have any backups

                                            Oh boy

                                            1 Reply Last reply Reply Quote 0
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