/usr/share/munin/plugins/ntp_kernel_pll_freq is in munin-plugins-core 2.0.37-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | #!/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 /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 BUGS
Handling of $fcomp is unquoted, and may cause trouble.
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
EOF
export PATH=/usr/local/sbin:$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"; } exit ev; }'
exit 0
fi
if [ -f /etc/munin/ntp-freq-comp ]; then
fcomp=`cat /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 '
if [ $(ntpq -c version | grep --extended-regexp --only-matching '[[:digit:]]\.[[:digit:]]\.[[:digit:]]' | tr -d '.') -ge 427 ]
then
cmd=ntpq
else
cmd=ntpdc
fi
$cmd -c kerninfo | awk -v fcomp=$fcomp '/^pll frequency:/ { print $3 + fcomp }'
|