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Pull request 1836: 5714-handle-zeroes-health

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Merge in DNS/adguard-home from 5714-handle-zeroes-health to master

Updates #5714.

Squashed commit of the following:

commit 24faab01faf723e313050294b3a35e249c3cd3e3
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Apr 19 13:10:24 2023 +0300

    docker: add curly brackets

commit 67365d02856200685551a79aa23cf59df4a3484b
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 18 20:16:12 2023 +0300

    docker: imp zeroes check
This commit is contained in:
Eugene Burkov 2023-04-19 13:48:59 +03:00
parent 584182e264
commit aeec9a86e2
2 changed files with 26 additions and 9 deletions
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7
docker/dns-bind.awk
View file

@ -7,11 +7,10 @@
addrs[$2] = true
prev_line = FNR
if ($2 == "0.0.0.0" || $2 == "::") {
delete addrs
addrs["localhost"] = true
if ($2 == "0.0.0.0" || $2 == "\"\"" || $2 == "'::'") {
# Drop all the other addresses.
delete addrs
addrs[""] = true
prev_line = -1
}
}

22
docker/healthcheck.sh
View file

@ -61,8 +61,11 @@ then
error_exit "no DNS bindings could be retrieved from $filename"
fi
first_dns="$( echo "$dns_hosts" | head -n 1 )"
readonly first_dns
# TODO(e.burkov): Deal with 0 port.
case "$( echo "$dns_hosts" | head -n 1 )"
case "$first_dns"
in
(*':0')
error_exit '0 in DNS port is not supported by healthcheck'
@ -82,8 +85,23 @@ esac
# See https://github.com/AdguardTeam/AdGuardHome/issues/5642.
wget --no-check-certificate "$web_url" -O /dev/null -q || exit 1
test_fqdn="healthcheck.adguardhome.test."
readonly test_fqdn
# The awk script currently returns only port prefixed with colon in case of
# unspecified address.
case "$first_dns"
in
(':'*)
nslookup -type=a "$test_fqdn" "127.0.0.1${first_dns}" > /dev/null ||\
nslookup -type=a "$test_fqdn" "[::1]${first_dns}" > /dev/null ||\
error_exit "nslookup failed for $host"
;;
(*)
echo "$dns_hosts" | while read -r host
do
nslookup -type=a healthcheck.adguardhome.test. "$host" > /dev/null ||\
nslookup -type=a "$test_fqdn" "$host" > /dev/null ||\
error_exit "nslookup failed for $host"
done
;;
esac