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    DNS Resolver Status, no data?

    Scheduled Pinned Locked Moved DHCP and DNS
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    • jimpJ
      jimp Rebel Alliance Developer Netgate
      last edited by

      When you talk to the roots in resolver mode there isn't much reason to keep around data for dozens of authoritative servers you may not talk to again for who knows how long.

      If you have the DNS Resolver in forwarding mode, it will show your forwarders there for much longer.

      But again, unbound could be clearing that for any other reason, like a restart

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by johnpoz

        The infra cache entries should stay their for the length of the ttl..

        Yeah if your unbound is restarting then the cache is going to be dumped.

        If you have it registering dhcp leases and you have lots of clients getting leases all the time then yeah it could be restarting every few minutes. Which makes the cache pretty useless to be honest ;)

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        • KOMK
          KOM
          last edited by

          I've already checked that Unbound is not restarting frequently. In fact, it hasn't restarted since its last boot 49 days ago in late January.

          RonpfSR 1 Reply Last reply Reply Quote 0
          • johnpozJ
            johnpoz LAYER 8 Global Moderator
            last edited by johnpoz

            Well something is dumping the infra cache then.. You have any crons setup? Do you have pfblocker installed?

            If unbound is up and running and being asked there would always be plenty of info in that cache.. Hmmm did you mess with the number of entries int he advanced tab?

            Did you change the
            TTL for Host Cache Entries
            Setting from its default 15 min to say 1 min or something?

            An intelligent man is sometimes forced to be drunk to spend time with his fools
            If you get confused: Listen to the Music Play
            Please don't Chat/PM me for help, unless mod related
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            • RonpfSR
              RonpfS @KOM
              last edited by

              @kom said in DNS Resolver Status, no data?:

              I've already checked that Unbound is not restarting frequently. In fact, it hasn't restarted since its last boot 49 days ago in late January.

              Sometimes (after reboot or WAN toggle) Unbound doesn't log anything to Status / System Logs / System / DNS Resolver.

              Restarting Unbound from Status / Services tab will get it to log.

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              • KOMK
                KOM
                last edited by

                Right, I odn't have time to chase this anymore. I put Resolver into forwarding mode and that's that.

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  You weren't doing dnssec anyway so doesn't matter. Can not 2 secons to look to see if you this setup you got from 4 years ago didn't adjust the infra ttl to 1 minute..

                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                  If you get confused: Listen to the Music Play
                  Please don't Chat/PM me for help, unless mod related
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                  • KOMK
                    KOM
                    last edited by

                    TTL for Host Cache Entries was set to 15 minutes. I definitely haven't touched that one. Wasn't even aware of it. It's entirely possible, and likely, that I was underestimating the time before the flush.

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator
                      last edited by johnpoz

                      That is not a flush, that is the max time a TTL can be set before it will timeout, etc. That is not a dump of the cache.

                      Let me state this again... If your resolve was working the info in the infra cache is beyond noise to someone that doesn't understand what any of it means.

                      You have no need to look down that rabbit hole if your not trying to troubleshoot a specific issue... Was resolver working? How many queries does it get in normally, if yours has been up for 49 days and your total number of queries was

                      total.num.queries=7233

                      Nobody is even asking pfsense anything...

                      Here I restarted unbound what yesterday and have
                      total.num.queries=19015
                      total.num.queries_ip_ratelimited=0
                      total.num.cachehits=16215
                      total.num.cachemiss=2800

                      And I only have a couple of boxes on my home network... As I brought up before you have pretty much everything using your proxy and or AD dns.. So what your doing on pfsense prob has zero to do with anything. You should prob turn it off and see who complains, since your having pfsense ask your AD for its own dns anyway. And from the entries you did have in your cache couldn't even talk to outside dns.

                      BTW: I have been doing dns for years and years, for some very large networks.. And also its just hobby of mine I love the way it works and how it does what it does so fast and efficient.. And I can tell you have never had need to look into such info.. Can not recall when I ever dumped the infra cache other to see if there there were huge amounts of timeouts and such.. Even if you manage dns for a huge network, you most likely would never have need to view that info like that... You might use the lookup command we did to see what your resolver is using.. But raw full dump of the infra - no its eye candy in the menu to impress new users that don't really understand dns anyway ;) My take on why they put it in..

                      If they wanted to put up some useful/interesting eyecandy they would do like the total number of queries, percent cache hit,

                      This info would be more interesting that the raw infra_dump

                      num.query.type.A=7801
                      num.query.type.SOA=15
                      num.query.type.PTR=9895
                      num.query.type.TXT=21
                      num.query.type.AAAA=1388
                      num.query.type.SRV=246
                      num.query.class.IN=19366

                      num.answer.rcode.NXDOMAIN=10067

                      That NXdomain means something is asking quite a bit actual for something that doesn't exist and gets returned NX.. So should prob look into that..

                      edit: Ok found it ;)

                      Mar 14 13:40:56 	unbound 	5708:1 	info: 10.0.8.3 HNA00050.snipped.internal.com. A IN NXDOMAIN 0.000000 1 121 
                      

                      Had unbound log queries and replies.. My shitty ass work laptop connected to my vpn to home is bombing nonsense down to my pfsense dns ;)

                      Just noise.. But should prob spend some time making sure my work laptop doesn't do that...

                      edit: Ok that corrected, simple acl to deny nonlocal from my laptops vpn IP... That way doesn't keep telling my Laptop NX for stuff it should be able to lookup from the local dns..

                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                      If you get confused: Listen to the Music Play
                      Please don't Chat/PM me for help, unless mod related
                      SG-4860 24.11 | Lab VMs 2.8, 24.11

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                      • M
                        MoonKnight
                        last edited by

                        Hi,

                        This is probably normal when using TLS over DNS? :)

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                        • provelsP
                          provels @MoonKnight
                          last edited by

                          @ciscox That's what I see when I use the Resolver as Forwarder.

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                          • T
                            Taz79
                            last edited by Taz79

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