/usr/share/munin/plugins/ntp_kernel_err 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 | #!/bin/sh
# -*- sh -*-
: <<EOF
=head1 NAME
ntp_kernel_err - Plugin to monitor the PLL estimated error for the
kernel NTP status
=head1 CONFIGURATION
No configuration
=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; }
/^estimated error:/ { ev=0; }
END { if (ev == 0) { print "yes";} else { print "no"; } exit ev; }'
exit 0
fi
if [ "$1" = "config" ]; then
echo 'graph_title NTP kernel PLL estimated error (secs)'
echo 'graph_vlabel est. err (secs)'
echo 'graph_category time'
echo 'graph_info The kernels estimated error for the phase-locked loop used by NTP.'
echo 'ntp_err.label est-error'
echo 'ntp_err.info Estimated error for the kernel PLL'
exit 0
fi
printf 'ntp_err.value '
if [ $(ntpq -c version | grep --extended-regexp --only-matching '[[:digit:]]\.[[:digit:]]\.[[:digit:]]' | tr -d '.') -ge 427 ]
then
ntpq -c kerninfo | awk '/^estimated error:/ { print $3 / 1000 }'
else
ntpdc -c kerninfo | awk '/^estimated error:/ { print $3 }'
fi
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