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Add two more system tests for stale-refresh-time

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Add one test that checks the behavior when serve-stale is enabled
via configuration (as opposed to enabled via rndc).

Add one test that checks the behavior when stale-refresh-time is
disabled (set to 0).
This commit is contained in:
Matthijs Mekking 2020-11-10 14:55:18 +01:00 committed by Diego Fronza
parent dee778de12
commit e99671e8dd
3 changed files with 217 additions and 0 deletions
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1
bin/tests/system/serve-stale/ns1/named1.conf.in
View file

@ -31,6 +31,7 @@ options {
stale-answer-ttl 4;
stale-answer-enable yes;
stale-cache-enable yes;
stale-refresh-time 30;
servfail-ttl 0;
};

41
bin/tests/system/serve-stale/ns1/named3.conf.in Normal file
View file

@ -0,0 +1,41 @@
/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
key rndc_key {
secret "1234abcd8765";
algorithm hmac-sha256;
};
controls {
inet 10.53.0.1 port @CONTROLPORT@ allow { any; } keys { rndc_key; };
};
options {
query-source address 10.53.0.1;
notify-source 10.53.0.1;
transfer-source 10.53.0.1;
port @PORT@;
pid-file "named.pid";
listen-on { 10.53.0.1; };
listen-on-v6 { none; };
recursion yes;
max-stale-ttl 20;
stale-answer-ttl 3;
stale-answer-enable yes;
stale-cache-enable yes;
stale-refresh-time 0;
servfail-ttl 0;
};
zone "." {
type primary;
file "root.db";
};

175
bin/tests/system/serve-stale/tests.sh
View file

@ -181,6 +181,77 @@ grep "1 #NXDOMAIN" ns1/named.stats.$n.cachedb > /dev/null || ret=1
status=$((status+ret))
if [ $ret != 0 ]; then echo_i "failed"; fi
# Test stale-refresh-time when serve-stale is enabled via configuration.
# Steps for testing stale-refresh-time option (default).
# 1. Prime cache data.example txt
# 2. Disable responses from authoritative server.
# 3. Sleep for TTL duration so rrset TTL expires (2 sec)
# 4. Query data.example
# 5. Check if response come from stale rrset (3 sec TTL)
# 6. Enable responses from authoritative server.
# 7. Query data.example
# 8. Check if response come from stale rrset, since the query
# is within stale-refresh-time window.
n=$((n+1))
echo_i "check 'rndc serve-stale status' ($n)"
ret=0
$RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
grep '_default: on (stale-answer-ttl=4 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 1-3 done above.
# Step 4.
n=$((n+1))
echo_i "sending query for test ($n)"
$DIG -p ${PORT} @10.53.0.1 data.example TXT > dig.out.test$n
# Step 5.
echo_i "check stale data.example (stale-refresh-time) ($n)"
ret=0
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "data\.example\..*4.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 6.
n=$((n+1))
echo_i "enable responses from authoritative server ($n)"
ret=0
$DIG -p ${PORT} @10.53.0.2 txt enable > dig.out.test$n
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "TXT.\"1\"" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 7.
echo_i "sending query for test $((n+1))"
$DIG -p ${PORT} @10.53.0.1 data.example TXT > dig.out.test$((n+1))
# Step 8.
n=$((n+1))
echo_i "check stale data.example comes from cache (stale-refresh-time) ($n)"
ret=0
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "data\.example\..*4.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
#
# Test disabling serve-stale via rndc.
#
n=$((n+1))
echo_i "disable responses from authoritative server ($n)"
ret=0
$DIG -p ${PORT} @10.53.0.2 txt disable > dig.out.test$n
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "TXT.\"0\"" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
n=$((n+1))
echo_i "running 'rndc serve-stale off' ($n)"
ret=0
@ -717,6 +788,110 @@ grep "data\.example\..*3.*IN.*TXT.*A text record with a 2 second ttl" dig.out.te
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Steps for testing stale-refresh-time option (disabled).
# 1. Prime cache data.example txt
# 2. Disable responses from authoritative server.
# 3. Sleep for TTL duration so rrset TTL expires (2 sec)
# 4. Query data.example
# 5. Check if response come from stale rrset (3 sec TTL)
# 6. Enable responses from authoritative server.
# 7. Query data.example
# 8. Check if response come from stale rrset, since the query
# is within stale-refresh-time window.
n=$((n+1))
echo_i "updating ns1/named.conf ($n)"
ret=0
copy_setports ns1/named3.conf.in ns1/named.conf
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
n=$((n+1))
echo_i "running 'rndc reload' ($n)"
ret=0
rndc_reload ns1 10.53.0.1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
n=$((n+1))
echo_i "check 'rndc serve-stale status' ($n)"
ret=0
$RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
grep '_default: on (rndc) (stale-answer-ttl=3 max-stale-ttl=20)' rndc.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
n=$((n+1))
echo_i "flush cache, enable responses from authoritative server ($n)"
ret=0
$RNDCCMD 10.53.0.1 flushtree example > rndc.out.test$n.1 2>&1 || ret=1
$DIG -p ${PORT} @10.53.0.2 txt enable > dig.out.test$n
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "TXT.\"1\"" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 1.
n=$((n+1))
echo_i "prime cache data.example (stale-refresh-time disabled) ($n)"
ret=0
$DIG -p ${PORT} @10.53.0.1 data.example TXT > dig.out.test$n
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "data\.example\..*2.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 2.
n=$((n+1))
echo_i "disable responses from authoritative server ($n)"
ret=0
$DIG -p ${PORT} @10.53.0.2 txt disable > dig.out.test$n
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "TXT.\"0\"" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 3.
sleep 2
# Step 4.
n=$((n+1))
echo_i "sending query for test ($n)"
$DIG -p ${PORT} @10.53.0.1 data.example TXT > dig.out.test$n
# Step 5.
echo_i "check stale data.example (stale-refresh-time disabled) ($n)"
ret=0
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "data\.example\..*3.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 6.
n=$((n+1))
echo_i "enable responses from authoritative server ($n)"
ret=0
$DIG -p ${PORT} @10.53.0.2 txt enable > dig.out.test$n
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "TXT.\"1\"" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
# Step 7.
echo_i "sending query for test $((n+1))"
$DIG -p ${PORT} @10.53.0.1 data.example TXT > dig.out.test$((n+1))
# Step 8.
n=$((n+1))
echo_i "check stale data.example comes from authoritative (stale-refresh-time disabled) ($n)"
ret=0
grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
grep "data\.example\..*2.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
if [ $ret != 0 ]; then echo_i "failed"; fi
status=$((status+ret))
#
# Now test server with no serve-stale options set.
#