Hi Wouter,
Thanks for your quick reply as usual :)
This indicates the remote end closed read the read end of the tcp
channel. [..]
Ok. I think they happen more when unbound seems to struggle to resolve
TCP queries. Indeed if recursion takes too long, the client closes the
connection after a defined timeout.
But this does not seem to explain the tcp issues you say you have. What
is the observed problem again? What queries are giving resolution
problems and timeouts - are you sure they even use tcp [..]
My problem is that sometimes any TCP queries timeout because they seem
stuck somewhere in unbound. It's _not_ due to a specific query. I have
the problem randomly and it affects all TCP queries. My loadbalancers
test my unbound clusters by doing some : "dig +tcp google.com
@UNBOUND_IP". I tried locally when it seems stuck and I have the same
behaviour. How can I distinguish the TCP from the UDP queries in a
unbound dump_requestlist ?
For the moment, my problem hasn't occurred again but I know it will. I
will try to do more debugging next time to see if it's unbound or
something else.
Also I forgot to paste my current config. Each server has 1G of memory
and unbound used ~760M once the cache is full. Servers are not heavily
used yet (see stats below over a ~5min period of time).
server:
verbosity: 1
interface-automatic: yes
outgoing-range: 950
so-rcvbuf: 4m
msg-cache-size: 200m
rrset-cache-size: 400m
access-control: 127.0.0.0/8 allow
...
hide-identity: yes
hide-version: yes
prefetch: yes
prefetch-key: yes
dlv-anchor-file: "dlv.isc.org.key"
python:
remote-control:
control-enable: yes
thread0.num.queries=123312
thread0.num.cachehits=96665
thread0.num.cachemiss=26647
thread0.num.prefetch=3679
thread0.num.recursivereplies=26387
thread0.requestlist.avg=153.573
thread0.requestlist.max=229
thread0.requestlist.overwritten=0
thread0.requestlist.exceeded=0
thread0.requestlist.current.all=118
thread0.requestlist.current.user=56
thread0.recursion.time.avg=5.068339
thread0.recursion.time.median=0.0445492
total.num.queries=123312
total.num.cachehits=96665
total.num.cachemiss=26647
total.num.prefetch=3679
total.num.recursivereplies=26387
total.requestlist.avg=153.573
total.requestlist.max=229
total.requestlist.overwritten=0
total.requestlist.exceeded=0
total.requestlist.current.all=118
total.requestlist.current.user=56
total.recursion.time.avg=5.068339
total.recursion.time.median=0.0445492
time.now=1289873333.934557
time.up=351187.814711
time.elapsed=22.832136
_______________________________________________
Unbound-users mailing list
[email protected]
http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users
