Mailcow: Watchdog: Call nslookup directly rather than relying on Nagios.
For unknown reasons, check_dns consistently crashes with a
segmentation fault in the current setup. Instead of calling it and
having it call nslookup, we now call nslookup ourselves.
diff --git a/mailcow/src/mailcow-dockerized/data/Dockerfiles/watchdog/watchdog.sh b/mailcow/src/mailcow-dockerized/data/Dockerfiles/watchdog/watchdog.sh
index 428aed6..4013cb4 100755
--- a/mailcow/src/mailcow-dockerized/data/Dockerfiles/watchdog/watchdog.sh
+++ b/mailcow/src/mailcow-dockerized/data/Dockerfiles/watchdog/watchdog.sh
@@ -251,7 +251,7 @@
touch /tmp/unbound-mailcow; echo "$(tail -50 /tmp/unbound-mailcow)" > /tmp/unbound-mailcow
host_ip=$(get_container_ip unbound-mailcow)
err_c_cur=${err_count}
- /usr/lib/nagios/plugins/check_dns -s ${host_ip} -H stackoverflow.com 2>> /tmp/unbound-mailcow 1>&2; err_count=$(( ${err_count} + $? ))
+ /usr/bin/nslookup -sil stackoverflow.com "${host_ip}" 2>> /tmp/unbound-mailcow 1>&2; err_count=$(( ${err_count} + $? ))
DNSSEC=$(dig com +dnssec "@${host_ip}" | egrep 'flags:.+ad')
if [[ -z ${DNSSEC} ]]; then
echo "DNSSEC failure" 2>> /tmp/unbound-mailcow 1>&2