Funktion

• ssh proxy
• dnsmasq - local DNS resolver f. host1.shackspace.de

2023-01-27

• anwesend: chris
• watchdog m. restart f. dnsmasq eingerichtet
  • added /etc/cron.d/watch-dnsmasq
  • added /root/bin/watch-dnsmasq

2023-11-12

• anwesend: chris
• watchdog m. restart f. dnsmasq erweitert

/etc/cron.d/watch-dnsmasq

# watch and restart dnsmasq
# Fri 27 Jan 2023 04:13:12 PM CET, chris
* * * * * root /root/bin/watch-dnsmasq

/root/bin/watch-dnsmasq

#!/bin/bash
 
# Test
#X=$( ( echo REFUSED >&1 ) ; dig +short github.com ; dig +short shackspace.de ; dig +short citecs.de 2>&1 )
X=$( dig +short github.com ; dig +short shackspace.de ; dig +short citecs.de 2>&1 )
 
if grep -q REFUSED <<< "$X" ; then
        echo "DNS resolving failed on infra1.shackspace.de (found 'REFUSED')"
        echo "restarting dnsmasq..."
        systemctl status dnsmasq
        systemctl restart dnsmasq
        systemctl status dnsmasq
else if [ "$X" = "" ] ; then
        echo "DNS resolving failed on infra1.shackspace.de (got empty answer)"
        echo "restarting dnsmasq..."
        systemctl status dnsmasq
        systemctl restart dnsmasq
        systemctl status dnsmasq
fi fi