<div dir="ltr">Hi,<div><br>thanks for your reply,<br><br></div><div>sure, </div><div>added the content of the configfile below,<br><br></div><div>all servers are VMs (openstack), OS is OracleLinux 8 on all servers with kernel: 4.18.0-553.22.1.el8_10.x86_64</div><div>all servers have two SRIOV interfaces in a bond.</div><div>dnsdist version is dnsdist-1.9.7-1pdns.el8.x86_64<br><br></div><div><br></div><div>thanks for your help!<br></div><div>br</div><div>Georg</div><div><br></div><div><br># dnsdist conf /etc/dnsdist/dnsdist.conf:<br></div><div>setLocal("<a href="http://127.0.0.1:5300">127.0.0.1:5300</a>")<br><br><br>newServer({ address='192.x.x.x', name='xxx-1', useProxyProtocol=true, sockets=16 })<br>newServer({ address='192.x.x.y', name='xxx-2', useProxyProtocol=true, sockets=16 })<br><br>controlSocket("<a href="http://127.0.0.1:5199">127.0.0.1:5199</a>")<br>setKey("key...")<br><br><br>carbonServer("172.z.z.z")<br><br><br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("<a href="http://0.0.0.0:53">0.0.0.0:53</a>", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br>addLocal("[::]:53", {reusePort=true})<br><br>webserver("<a href="http://127.0.0.1:8083">127.0.0.1:8083</a>")<br>setWebserverConfig({password="pw...", apiKey="key...", acl="x.x.x.x/32, x.x.x.x/32, x.x.x.x/24, <a href="http://127.0.0.1/32">127.0.0.1/32</a>, "})<br><br>pc = newPacketCache(10000000, {maxTTL=86400, minTTL=60, temporaryFailureTTL=60, staleTTL=60, dontAge=false})<br>getPool(""):setCache(pc)<br><br>setStaleCacheEntriesTTL(3600)<br><br><br>setACL('<a href="http://127.0.0.1/32">127.0.0.1/32</a>')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br>addACL('x.x.x.x/x')<br><br><br>setUDPTimeout(3)<br><br><br><br></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 8, 2024 at 9:24 AM Remi Gacogne via Pdns-users <<a href="mailto:pdns-users@mailman.powerdns.com">pdns-users@mailman.powerdns.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
On 07/11/2024 17:26, janasowieso Nicht via Pdns-users wrote:<br>
> do you maybe have any idea how we can figure out where these errors are <br>
> coming from exactly?<br>
> or if they really indicate a problem?<br>
> or maybe someone has experienced something similar?<br>
> <br>
> would be great if someone has a hint or an idea for us :-)<br>
<br>
Please share your complete dnsdist configuration, otherwise it's very <br>
hard to help you. The "sock_drop" counter from "ss" seem to indicate <br>
that dnsdist's incoming UDP buffers sometimes get full which is very <br>
unexpected at 1500 QPS, even without tuning, but without seeing the <br>
actual configuration it's impossible to know what's going on.<br>
<br>
Best regards,<br>
-- <br>
Remi Gacogne<br>
PowerDNS.COM BV - <a href="https://www.powerdns.com/" rel="noreferrer" target="_blank">https://www.powerdns.com/</a><br>
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