Open pbiering opened 10 months ago
found even more curious behavior while tweaking local DNS resolution:
/opt/omd/versions/5.20-labs-edition/lib/monitoring-plugins/check_ping -H ipv6.bieringer.de -w 3000.0,80% -c 5000.0,100% -p 5 -6
/usr/sbin/ping -4 -n -U -w 30 -c 5 ipv6.bieringer.de
PING OK - Packet loss = 0%, RTA = 0.12 ms|rta=0.119000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0;
/usr/sbin/ping: ipv6.bieringer.de: Address family for hostname not supported
does it try IPv4 ping even in case of -6
is supplied?
you can always add -vvv
to see the actual ping command executed.
The issue still persists on 5.30 and EL9:
opt/omd/versions/5.30-labs-edition/lib/monitoring-plugins/check_ping -h
check_ping v2.3.5 (monitoring-plugins 2.3.5)
...
Usage:
check_ping -H <host_address> -w <wrta>,<wpl>% -c <crta>,<cpl>%
[-p packets] [-t timeout] [-4|-6]
...
-4, --use-ipv4
Use IPv4 connection
-6, --use-ipv6
Use IPv6 connection
...
Result is that -6 is not honored and -4 is selected
/opt/omd/versions/5.30-labs-edition/lib/monitoring-plugins/check_ping -H ftp6.bieringer.de -w 3000.0,80% -c 5000.0,100% -p 5 -6
/usr/sbin/ping -4 -n -U -w 30 -c 5 ftp6.bieringer.de
CRITICAL - Could not interpret output from ping command
While migrating monitoring system from EL8 to EL9 a strange issue was found:
check_ping
from RPM has a problem, option-6
is not proper honored andping
is called with-4
/opt/omd/versions/5.20-labs-edition/lib/monitoring-plugins/check_ping -V check_ping v2.3.3 (monitoring-plugins 2.3.3)
/opt/omd/versions/5.20-labs-edition/lib/monitoring-plugins/check_ping -H ipv6.bieringer.de -w 3000.0,80% -c 5000.0,100% -p 5 -6 /usr/sbin/ping -4 -n -U -w 30 -c 5 ipv6.bieringer.de CRITICAL - Could not interpret output from ping command
rpm -qf /opt/omd/versions/5.20-labs-edition/lib/monitoring-plugins/check_ping omd-5.20-labs-edition-el8-1.x86_64
/opt/omd/versions/5.20-labs-edition/lib/monitoring-plugins/check_ping -V check_ping v2.3.3 (monitoring-plugins 2.3.3)
/opt/omd/versions/5.20-labs-edition/lib/monitoring-plugins/check_ping -H ipv6.bieringer.de -w 3000.0,80% -c 5000.0,100% -p 5 -6 PING OK - Packet loss = 0%, RTA = 12.23 ms|rta=12.230000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0;