Nagios PROBLEM Host Alert localhost is DOWN
Recently I installed the Nagios and nagios-plugins package.
Soon thereafter I started receiving email alerts.
PROBLEM Host Alert: localhost is DOWN
How the hell can software run and not find the same computer?
I checked the ping command permissions:
/bin/ping: chmod u+s / -rws--x--x
The ping command worked fine locally as root and non-root.
ping_syntax=/bin/ping -n -U -c 5 $HOSTADDRESS$
I could login as the nagios user and the ping command worked fine.
Disabling iptables made no difference.
Running the nagios
check_ping command manually:
/usr/libexec/nagios/check_ping -H localhost -w 100.0,20% -c 500.0,60% -p 5 /bin/ping6 CRITICAL - Could not interpret output from ping command
I saw the same results for ipv4:
/bin/ping CRITICAL - Could not interpret output from ping command
My /etc/hosts file was just fine.
On a whim I installed the
monitoring-plugins package and removed the
I notified the nagios slackbuild maintainer.