[Samba] resolv.conf

[L.P.H. van Belle]

Hai, 

I suggest for your monitoring, setup an caching name server. 
https://www.digitalocean.com/community/tutorials/how-to-configure-bind-as-a-private-network-dns-server-on-debian-9 
A desent base to start ready. 

This speeds up your resolving a lot and that helps you monitoring also. 
Optional you can make this dns server also a slave dns and caching dns. 

This would be my preffered setup. 
Slave dns, now if you primary DNS isnt resolving, you slave responces always, because it still has the zones.
Caching dns, because it speeds up your resolving a lot. 

One sidenote, 
Make sure you monitoring is monitoring the this dns server also. 
Maybe add some logging to it also, so you can see/detect errors more easy. 

Greetz, 

Louis

 

> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Christian Naumer via samba
> Verzonden: maandag 15 april 2019 11:25
> Aan: samba
> Onderwerp: [Samba] resolv.conf
> 
> Hello you all,
> this is a bit OT but I think I'll find some people here that can help.
> We have 4 DCs all on the same site. This is working fine. 3 
> Are VMs one
> is a physical server. They are the only DNS servers in that 
> network. On
> a member server running our icinga2 installation I have this in the
> resolv.conf:
> 
> options rotate timeout:2 retries:1
> search example.com
> nameserver x.x.x.x (ip dc1)
> nameserver x.x.x.x (ip dc2)
> nameserver x.x.x.x (ip dc4)
> 
> 
> Now when we update and reboot the dcs this works OK for most host but
> this one brings up errors that it cannot contact some host. 
> Usually this
> happens on dc4 which is the physical server. That is why I 
> included the
> rotate and timeout options. But this does not seem to help.
> What are you guys using to mitigate such problems?
> 
> Regards
> 
> Christian
> 
> -- 
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> 
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