[Pdns-users] [dnsdist] Dnsdist not reading from the cache
SAMI RAHAL
Sami.Rahal at topnetpro.tn
Fri Sep 9 15:38:10 UTC 2022
Hi Remi
The server is in production it receives requests as shown in this summary
Uptime: 17 days, Number of queries: 2326402346 (2385.00 qps), ACL drops: 0, Dynamic drops: 27076173, Rule drops: 6451838
Average response time: 9.40 ms, CPU Usage: 26.50%, Cache hitrate: 85.37%, Server selection policy: leastOutstanding
Listening on: 0.0.0.0:53, ACL: 0.0.0.0/0
thanks Rahal
Cordialement, Sami Rahal Service Hosting DNS et Cloud Direction Technique & SI Siège Social TOPNET, Centre Urbain Nord Tél. :71185000 GSM :99 459 812
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Envoyé : vendredi 9 septembre 2022 14:00
À : pdns-users at mailman.powerdns.com
Objet : [EXTERNE]Pdns-users Digest, Vol 236, Issue 5
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Today's Topics:
1. Re: [dnsdist] Dnsdist not reading from the cache (Remi Gacogne)
2. Re: [EXTERNE]Re: [dnsdist] Dnsdist not reading from the cache
(SAMI RAHAL)
3. Re: [EXT] RE: [EXTERNE]Re: [dnsdist] Dnsdist not reading from
the cache (Remi Gacogne)
----------------------------------------------------------------------
Message: 1
Date: Fri, 9 Sep 2022 09:24:57 +0200
From: Remi Gacogne <remi.gacogne at powerdns.com>
To: SAMI RAHAL <Sami.Rahal at topnetpro.tn>,
"pdns-users at mailman.powerdns.com" <pdns-users at mailman.powerdns.com>
Subject: Re: [Pdns-users] [dnsdist] Dnsdist not reading from the cache
Message-ID: <00726a29-c73a-59e0-c901-a9109f114396 at powerdns.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi,
On 07/09/2022 14:02, SAMI RAHAL via Pdns-users wrote:
> for those running dnsdist I'm wondering is anyone has set up cache.
>
> If you have, I'd appreciate pointers in your strategies (and/or some
> examples?).
A lot of installations are using caching in dnsdist, yes. I don't see
anything immediately wrong after looking at your configuration. What
makes you think caching is not working?
--
Remi Gacogne
PowerDNS.COM BV - https://www.powerdns.com/
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Message: 2
Date: Fri, 9 Sep 2022 09:34:19 +0000
From: SAMI RAHAL <Sami.Rahal at topnetpro.tn>
To: Remi Gacogne <remi.gacogne at powerdns.com>,
"pdns-users at mailman.powerdns.com" <pdns-users at mailman.powerdns.com>
Subject: Re: [Pdns-users] [EXTERNE]Re: [dnsdist] Dnsdist not reading
from the cache
Message-ID: <5a536fb77d7a42039c9e5009341df52e at topnetpro.tn>
Content-Type: text/plain; charset="iso-8859-1"
Hi Remi
Thank you for your answer
I test the cache as follows:
getPool("resolverTopnet"):getCache():printStats()
I get empty values:
Entries: 0/2000000
Hits: 0
Misses: 0
Deferred inserts: 0
Deferred lookups: 0
Lookup Collisions: 0
Insert Collisions: 0
TTL Too Shorts: 0
before updating dnsdist from 1.5 to 1.7 i can see the values
Thanks a lot
________________________________
De : Remi Gacogne <remi.gacogne at powerdns.com>
Envoy? : vendredi 9 septembre 2022 09:24
? : SAMI RAHAL; pdns-users at mailman.powerdns.com
Objet : [EXTERNE]Re: [Pdns-users] [dnsdist] Dnsdist not reading from the cache
Hi,
On 07/09/2022 14:02, SAMI RAHAL via Pdns-users wrote:
> for those running dnsdist I'm wondering is anyone has set up cache.
>
> If you have, I'd appreciate pointers in your strategies (and/or some
> examples?).
A lot of installations are using caching in dnsdist, yes. I don't see
anything immediately wrong after looking at your configuration. What
makes you think caching is not working?
--
Remi Gacogne
PowerDNS.COM BV - https://www.powerdns.com/
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Message: 3
Date: Fri, 9 Sep 2022 11:37:51 +0200
From: Remi Gacogne <remi.gacogne at powerdns.com>
To: "pdns-users at mailman.powerdns.com"
<pdns-users at mailman.powerdns.com>
Subject: Re: [Pdns-users] [EXT] RE: [EXTERNE]Re: [dnsdist] Dnsdist not
reading from the cache
Message-ID: <caed01f5-6771-3828-b323-3bcc4f7e1c46 at powerdns.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
On 09/09/2022 11:34, SAMI RAHAL wrote:
> Thank you for your answer I test the cache as follows:
> getPool("resolverTopnet"):getCache():printStats()
>
> I get empty values:
>
> Entries: 0/2000000
> Hits: 0
> Misses: 0
> Deferred inserts: 0
> Deferred lookups: 0
> Lookup Collisions: 0
> Insert Collisions: 0
> TTL Too Shorts: 0
>
> before updating dnsdist from 1.5 to 1.7 i can see the values
But how are you testing exactly? How are you sending the DNS queries
during your test?
--
Remi Gacogne
PowerDNS.COM BV - https://www.powerdns.com/
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