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    Unbound seems to be restarting frequently

    Scheduled Pinned Locked Moved DHCP and DNS
    178 Posts 43 Posters 73.7k Views
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    • AhnHELA
      AhnHEL
      last edited by

      Does this happen consistently?

      I know certain config changes will cause Unbound to restart so if you made a few changes you might see a few of these restarts in a row.

      AhnHEL (Angel)

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      • C
        CiscoKid85
        last edited by

        Fairly consistent. On average every 2-3mins.. Occasionally multiple times in a minute.

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        • K
          kejianshi
          last edited by

          I'd post my DNS resolver configuration, DNS forwarder configuration, any port forwards or anything you have running on port 53, etc etc and see if something stands out.

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          • C
            CiscoKid85
            last edited by

            Where can I find / how can I export unbound's config?

            I did experiment with unbound and forwarder a few times.. Perhaps toggling between the two caused some issues.

            I have no confirmed at least that forwarder is off.

            Thanks!

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            • H
              hda
              last edited by

              Flush experimental & crap by rebooting ?

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              • johnpozJ
                johnpoz LAYER 8 Global Moderator
                last edited by

                curious is this a clean install of 2.2, and upgrade?  Did you have or try to install the unbound package before it was part of 2.2?

                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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                • C
                  CiscoKid85
                  last edited by

                  The problem persists after subsequent reboots. This was a clean 2.2 install.

                  Can someone tell me where to find the config? I'll try and grab it to post. Perhaps that may shed some light.

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                  • K
                    kejianshi
                    last edited by

                    services > DNS resolver - unbound

                    services > DNS forwarder - dnsmasq

                    I was suggesting that you take a screen shot of the settings in there and post to see if there is anything strange there.

                    Or, you can post here daily "my unbound is weird" over and over…

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                    • C
                      CiscoKid85
                      last edited by

                      Attached.

                      resolver.PNG
                      resolver.PNG_thumb
                      resolver_advanced.PNG
                      resolver_advanced.PNG_thumb
                      forwarder.PNG
                      forwarder.PNG_thumb
                      system_general.PNG
                      system_general.PNG_thumb

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                      • K
                        kejianshi
                        last edited by

                        With these settings, your unbound is just acting as a forwarder.  May as well use dnsmasq instead (dns forwarder)

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                        • C
                          CiscoKid85
                          last edited by

                          But I still get the benefit of pre-fetch and caching.

                          My actual unbound config is here.

                          I found the unbound logs but I'm getting permission denied when I try to view them. I also can't do a sudo or sudo su. Any suggestions on how I can get the raw logs?

                          I'd still like to fix unbound should I decide to not forward queries.

                          unbound.txt

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                          • K
                            kejianshi
                            last edited by

                            Were you using unbound in 2.1.5?  (yes or no)

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                            • C
                              CiscoKid85
                              last edited by

                              I never used 2.1. My 2.2 build was a fresh install on a new pc engines build.

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                              • C
                                CiscoKid85
                                last edited by

                                If I filter for restarts, I get the following:

                                Mar 2 11:52:20	unbound: [28167:0] notice: init module 0: iterator
Mar 2 11:52:20	unbound: [28167:0] notice: Restart of unbound 1.5.1.
Mar 2 10:49:14	unbound: [28167:0] notice: init module 0: iterator
Mar 2 10:49:14	unbound: [28167:0] notice: Restart of unbound 1.5.1.
Mar 2 10:49:12	unbound: [28167:0] notice: init module 0: iterator
Mar 2 10:49:12	unbound: [28167:0] notice: Restart of unbound 1.5.1.
Mar 2 10:49:12	unbound: [28167:0] notice: init module 0: iterator
Mar 2 10:09:59	unbound: [45732:0] notice: init module 0: iterator
Mar 2 10:09:59	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 10:03:14	unbound: [45732:0] notice: init module 0: iterator
Mar 2 10:03:14	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:53:20	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:53:20	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:43:24	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:43:24	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:33:30	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:33:30	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:33:30	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:33:30	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:31:00	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:31:00	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:30:56	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:30:56	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:30:20	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:30:20	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:24:02	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:24:02	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:23:29	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:23:29	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:13:34	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:13:34	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:12:04	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:12:04	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 09:09:56	unbound: [45732:0] notice: init module 0: iterator
Mar 2 09:09:56	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 08:09:43	unbound: [45732:0] notice: init module 0: iterator
Mar 2 08:09:43	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 08:02:39	unbound: [45732:0] notice: init module 0: iterator
Mar 2 08:02:39	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 07:52:44	unbound: [45732:0] notice: init module 0: iterator
Mar 2 07:52:44	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 07:49:50	unbound: [45732:0] notice: init module 0: iterator
Mar 2 07:49:50	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 07:42:49	unbound: [45732:0] notice: init module 0: iterator
Mar 2 07:42:49	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 07:40:24	unbound: [45732:0] notice: init module 0: iterator
Mar 2 07:40:24	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 07:38:15	unbound: [45732:0] notice: init module 0: iterator
Mar 2 07:38:15	unbound: [45732:0] notice: Restart of unbound 1.5.1.
Mar 2 07:37:28	unbound: [45732:0] notice: init module 0: iterator
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                                • K
                                  kejianshi
                                  last edited by

                                  Hmmmm.  Is there a reason you don't want to use the root DNS servers (just curious)?

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                                  • C
                                    CiscoKid85
                                    last edited by

                                    Comcast operates a bunch of caching servers for content from Akamai, Netflix. I'd like to hit the locally cached servers when that content is requested. Netflix definitely streams a little faster, I think.

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                                    • K
                                      kejianshi
                                      last edited by

                                      Thing is, I think hitting the local DNS without DNSSEC and harden glue and all that might be whats crashing your unbound.

                                      Would you be opposed to trying it in resolver mode instead of forwarder mode for a while?  See if it stops crashing?

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                                      • C
                                        CiscoKid85
                                        last edited by

                                        Is there any additional logging I can enable that may offer better insight?

                                        Would someone mind posting their config so I can try running a good one that I know works?

                                        Thanks!

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                                        • C
                                          CiscoKid85
                                          last edited by

                                          How do I reset the Resolver general settings to their defaults? The GUI retains the settings from the previous config, even if I wipe out the .conf file.

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                                          • H
                                            hda
                                            last edited by

                                            Why are you hard on yourself with CLI. Just use the webGUI to stop and start what you want.

                                            Stop Services: DNS forwarder.
                                            Clear out System: General Setup for DNS servers
                                            Set Services: DNS Resolver(interfaces & DNSSEC) only
                                            Services: DNS Resolver: Advanced(Harden = true)

                                            Maybe reboot.

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