pfSense 2.7 DNS Resolver doesn't start
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@LastOfTheRonnies said in pfSense 2.7 DNS Resolver doesn't start:
I do see a HUP coming from dhcpd at 11:03:42
You're close
This is the one :@LastOfTheRonnies said in pfSense 2.7 DNS Resolver doesn't start:
pfSense dhcpleases[64065]: Sending HUP signal to dns daemon(47791)
'some one' has checked the option "Register DHCP ...." under the Resolver settings.
So, whenever a DHCP lease comes in or is renew, your unbound resolver gets shot (sorry : restarted).
Btw : "dhcpleases" asks for a restart, not a stop.
If your unbound won't restart any more then ... dono why ( maybe it was getting getting tired of being restarted all the time ? )Anyway : now you know what to do.
Btw : I just discovered that these options do not exist any more under 23.09, so they probably wont exist any more under the upcoming 2.7.1.
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@Gertjan
Hi, yes I selected to register DNS names as I needed it for mDNS functionality with IOT devices. I moved to a Technitium DNS server instead, setting PFSense to forward, and it has been stable ever since (and I get pretty little graphs and better DNS management as a bonus).So the option to register DNS on lease creation or renewal has now been removed? So how does local DNS work then if it's gone?
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@LastOfTheRonnies said in pfSense 2.7 DNS Resolver doesn't start:
needed it for mDNS functionality
Think you might need to relook up how mdns works ;)
https://en.wikipedia.org/wiki/Multicast_DNS
the multicast DNS (mDNS) protocol resolves hostnames to IP addresses within small networks that do not include a local name server.
When an mDNS client needs to resolve a hostname, it sends an IP multicast query message that asks the host having that name to identify itself. That target machine then multicasts a message that includes its IP address. All machines in that subnet can then use that information to update their mDNS caches.
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@johnpoz Hmm - fair enough point. .local name resolution was what I was looking for rather than mDNS discovery specifically.
But the point stands: I should be able to register hostnames on DHCP register leases/renewals without the service dumping and not restarting, right? -
@LastOfTheRonnies said in pfSense 2.7 DNS Resolver doesn't start:
I should be able to hostnames on DHCP register leases/renewals without the service dumping and not restarting, right?
That has been an issue with pfsense and unbound for very long time. While you can register dhcp, it forces a restart of unbound. Depending on how many clients you have, how often you have clients renew there lease it may not be a problem for you.
How fast your unbound restarts, also comes into play.
One solution is to just set a reservation for your devices, so they will always get the same IP. And just register these static/reservations which are only loaded when unbound starts.. So there are no restarts that happen every time a client renews a lease.
There is some hope that with the move to KEA vs isc dhcp that this issue will go away. But Kea is not yet fully functional, it is in preview mode and many features are not yet implemented in pfsense.
.local name resolution
if your trying to use that with your normal dns, your doing it wrong to start with. .local is really only for use with mdns.. Use some other domain, home.apra is the recommended/approved domain to use for local dns..
I use local.lan, but slowing moving away from that to home.arpa
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@johnpoz Ok, thanks for the pointers & education. I do have static reservations for ~98% of my devices. The issue only started once I updated from 2.6.x to 2.7.0.
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@LastOfTheRonnies what issue exactly? There is not any issues that I am aware of with dns registration of reservations in 2.7..
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@johnpoz said in pfSense 2.7 DNS Resolver doesn't start:
what issue exactly?
@LastOfTheRonnies said in pfSense 2.7 DNS Resolver doesn't start:
Unbound goes for a restart but does not complete the reload.
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@LastOfTheRonnies Well that is not related to loading static reservations.
You have to look to see why its not finishing the restart - but really it shouldn't restart unless your trying to register dhcp.
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I've followed all recommendations from @Gertjan and @johnpoz, but unfortunately I'm also still facing the issue of Unbound not completing a restart once every two weeks or so. Same behavior since updating to 2.7.1
I have no idea how to pinpoint the issue, besides this being an issue I'm facing since 2.7
