Package: nagios-statd-server
Severity: normal
In line 21 /usr/sbin/nagios-statd contains
a shell command to determine swap usage:
free | awk '$1~/^Swap:/{print ($3/$2)*100}'
When gawk is installed, zero swap size causes
an error message and an exit code 2 (which
mistakenly marks the host as critical).
Zero swap size may occur routinely on virtualized
systems such as openvz.
(The default awk binary has no division by zero
error, but results in "nan".)
A working fix is replacing the above command with:
free | awk '$1~/^Swap:/{if ($2>0) print ($3/$2)*100; else print \"nan\"}'
-- System Information:
Debian Release: 5.0.4
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.26-2-openvz-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-
Shell: /bin/sh linked to /bin/bash
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