Current File : //backups/router/usr/local/share/munin/plugins/ntp_kernel_pll_freq
#!/bin/sh
# -*- sh -*-
: <<EOF
=head1 NAME
ntp_kernel_pll_freq - Plugin to monitor the kernel's PLL frequency for
the NTP status
=head1 CONFIGURATION
No configuration
This plugin optionally reads the file /usr/local/etc/munin/ntp-freq-comp, which
should contain a number to be added to the frequency read by ntpdc.
=head1 AUTHORS
Unknown author
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
EOF
export PATH=/usr/local/sbin:$PATH
if [ "$1" = "autoconf" ]; then
{ ntpq -c kerninfo; ntpdc -c kerninfo; } 2>/dev/null |
awk 'BEGIN { ev=1; }
/^pll frequency:/ { ev=0; }
END { if (ev == 0) { print "yes";} else { print "no (command ntpq or ntpdc not found)"; } exit 0; }'
exit 0
fi
if [ -f "/usr/local/etc/munin/ntp-freq-comp" ]; then
fcomp=$(cat "/usr/local/etc/munin/ntp-freq-comp")
else
fcomp=0
fi
if [ "$1" = "config" ]; then
echo 'graph_title NTP kernel PLL frequency (ppm +' ${fcomp}')'
echo 'graph_args --alt-autoscale'
echo 'graph_vlabel PLL frequency (ppm +' ${fcomp}')'
echo 'graph_category time'
echo 'graph_info The frequency for the kernel phase-locked loop used by NTP.'
echo 'ntp_pll_freq.label pll-freq'
echo 'ntp_pll_freq.info Phase-locked loop frequency in parts per million'
exit 0
fi
printf 'ntp_pll_freq.value '
ntpq_name=$(ntpq -c version | sed 's/[^[:alpha:]].*//')
ntpq_version=$(ntpq -c version | grep --extended-regexp --only-matching '[[:digit:]]\.[[:digit:]]\.[[:digit:]]')
if [ "$ntpq_name" = "ntpq" ] && [ "$(echo "$ntpq_version" | tr -d '.')" -lt 427 ]; then
cmd=ntpdc
else
cmd=ntpq
fi
"$cmd" -c kerninfo | awk -v "fcomp=$fcomp" '/^pll frequency:/ { printf("%.9f\n", $3 + fcomp) }'
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