mirror of
https://github.com/isc-projects/bind9.git
synced 2026-02-26 11:32:01 -05:00
a878301981
3943. [func] SERVFAIL responses can now be cached for a limited time (configured by "servfail-ttl", default 10 seconds, limit 30). This can reduce the frequency of retries when an authoritative server is known to be failing, e.g., due to ongoing DNSSEC validation problems. [RT #21347]
100 lines
3.5 KiB
Bash
100 lines
3.5 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
|
|
#
|
|
# Permission to use, copy, modify, and/or distribute this software for any
|
|
# purpose with or without fee is hereby granted, provided that the above
|
|
# copyright notice and this permission notice appear in all copies.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
|
|
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
|
|
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
# PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
SYSTEMTESTTOP=..
|
|
. $SYSTEMTESTTOP/conf.sh
|
|
|
|
status=0
|
|
n=0
|
|
|
|
rm -f dig.out.*
|
|
|
|
DIGOPTS="+tcp +noadd +nosea +nostat +nocmd -p 5300"
|
|
|
|
echo "I:checking DNSSEC SERVFAIL is cached ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS +dnssec foo.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
$RNDC -c ../common/rndc.conf -s 10.53.0.5 -p 9953 dumpdb -all 2>&1 | sed 's/^/I:ns5 /'
|
|
for i in 1 2 3 4 5 6 7 8 9 10; do
|
|
awk '/Zone/{out=0} out; /SERVFAIL/{out=1}' ns5/named_dump.db > sfcache.$n
|
|
[ -s "sfcache.$n" ] && break
|
|
sleep 1
|
|
done
|
|
grep "^; foo.example/A" sfcache.$n > /dev/null || ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:checking SERVFAIL is returned from cache ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS +dnssec foo.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
grep "SERVFAIL" dig.out.ns5.test$n > /dev/null || ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:checking that +cd bypasses cache check ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS +dnssec +cd foo.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
grep "SERVFAIL" dig.out.ns5.test$n > /dev/null && ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:disabling server to force non-dnssec SERVFAIL"
|
|
$RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 stop 2>&1 | sed 's/^/I:ns2 /'
|
|
|
|
awk '/SERVFAIL/ { next; out=1 } /Zone/ { out=0 } out { print }' ns5/named_dump.db
|
|
echo "I:checking SERVFAIL is cached ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS bar.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
$RNDC -c ../common/rndc.conf -s 10.53.0.5 -p 9953 dumpdb -all 2>&1 | sed 's/^/I:ns5 /'
|
|
for i in 1 2 3 4 5 6 7 8 9 10; do
|
|
awk '/Zone/{out=0} out; /SERVFAIL/{out=1}' ns5/named_dump.db > sfcache.$n
|
|
[ -s "sfcache.$n" ] && break
|
|
sleep 1
|
|
done
|
|
grep "^; bar.example/A" sfcache.$n > /dev/null || ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:checking SERVFAIL is returned from cache ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS bar.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
grep "SERVFAIL" dig.out.ns5.test$n > /dev/null || ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:checking with +cd query ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS +cd bar.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
grep "SERVFAIL" dig.out.ns5.test$n > /dev/null || ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:checking with +dnssec query ($n)"
|
|
ret=0
|
|
$DIG $DIGOPTS +cd bar.example. a @10.53.0.5 > dig.out.ns5.test$n || ret=1
|
|
grep "SERVFAIL" dig.out.ns5.test$n > /dev/null || ret=1
|
|
n=`expr $n + 1`
|
|
if [ $ret != 0 ]; then echo "I:failed"; fi
|
|
status=`expr $status + $ret`
|
|
|
|
echo "I:exit status: $status"
|
|
exit $status
|