Unbound seems to be restarting frequently

CiscoKid85 · Feb 28, 2015, 6:44 PM

From the logs, it seems that unbound is stopping/starting fairly frequently.. Is this expected/normal behavior? Any suggestions on how I could troubleshoot?

Thanks,
-Ryan

CiscoKid85 · Mar 2, 2015, 1:01 AM

bump

AhnHEL · Mar 2, 2015, 1:37 AM

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.

CiscoKid85 · Mar 2, 2015, 4:28 AM

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

kejianshi · Mar 2, 2015, 4:33 AM

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.

CiscoKid85 · Mar 2, 2015, 3:43 PM

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!

hda · Mar 2, 2015, 3:48 PM

Flush experimental & crap by rebooting ?

johnpoz · Mar 2, 2015, 3:50 PM

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?

CiscoKid85 · Mar 2, 2015, 3:53 PM

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.

kejianshi · Mar 2, 2015, 4:30 PM

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…

CiscoKid85 · Mar 2, 2015, 4:48 PM

Attached.

kejianshi · Mar 2, 2015, 4:56 PM

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

CiscoKid85 · Mar 2, 2015, 5:03 PM

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

kejianshi · Mar 2, 2015, 5:07 PM

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

CiscoKid85 · Mar 2, 2015, 5:09 PM

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

CiscoKid85 · Mar 2, 2015, 5:10 PM

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

kejianshi · Mar 2, 2015, 5:10 PM

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

CiscoKid85 · Mar 2, 2015, 5:18 PM

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.

kejianshi · Mar 2, 2015, 5:20 PM

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?

CiscoKid85 · Mar 2, 2015, 5:29 PM

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!