[Pdns-users] [External] Re: Notification for domains to ip1:53 failed after retries

[Steve Zeng]

Klaus,

Sorry for replying late. 


> On Jan 17, 2018, at 7:32 AM, Klaus Darilion <klaus.mailinglists at pernau.at> wrote:
> 
> 
> 
> Am 17.01.2018 um 11:31 schrieb Steve Zeng:
>> I came across this post and was concerned if the high number of NOTIFY/AXFR overloaded PowerDNS, given that we have ~6,000 zones and ~100 BIND slaves. Do you know if there is a built-in limit on the AXFR volume? 
> 
> Probably not the number of zones but the number of changes in this zone
> is more relevant.
> 
> Nevertheless, using that number of zones and name servers I would also
> use a database replication (which implies that you have to replace Bind
> with PowerDNS on your anycast nodes). I can recommend PostgreSQL with
> Slony (works great here with 40 slaves and nearly 1mio zones)
> 
> I wonder, in your current setup, are the slaves all in sync with the
> master? That was our concern when we decided to use PowerDNS with
> DB-replciation.
> 
most of the slaves can keep in sync except a few frequently updated zones which is also the reason I open this email thread :-).  

Great to know you go with DB replication. It is our end goal as well. it is a intermediate state with BIND master -> PDNS -> BIND slaves currently. 

speaking of slaves, does PowerDNS Recursor can fully replace BIND in your experience? i.e. forwarding, caching and DNSBL, etc.? 

Thanks,


> regards
> Klaus
> 
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