124 lines
3.3 KiB
Bash
124 lines
3.3 KiB
Bash
#!/bin/sh
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: <<=cut
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=head1 NAME
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parse Chrony Tracking output for timeserver status information
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=head1 APPLICABLE SYSTEMS
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Any system with a local chronyd service.
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=head1 CONFIGURATION
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No configuration.
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=head1 VERSION
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Revision 0.1 2008/08/23 13:06:00 joti
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First version only chronyc tracking, autodetection included.
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Revision 0.2 2008/10/11 16:09:00 joti
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Added scaling of other values to match with frequency, added more description to fields
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Revision 0.3 2014/02/16 zjttoefs
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reduce forking by using awk
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do not limit output precision
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add stratum monitoring
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detect slow/fast time or frequency and adjust sign of value accordingly
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remove commented out code
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Revision 0.4 2016/11/10 Lars Kruse
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rewrite field handling
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use "which" for "chronyc" location
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switch from "bash" to "sh"
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fix exit code of failing "autoconf"
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=head1 AUTHOR
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Copyright (C) 2008 joti
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Copyright (C) 2014 zjttoefs
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Copyright (C) 2016 Lars Kruse <devel@sumpfralle>
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf
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=cut
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CHRONYC="$(which chronyc | head -1)"
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# Frequency has extremely higher values than other. Therefore they are fitted by scaling via suitable factors.
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# field definitions:
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# - munin fieldname
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# - factor for graph visualization (all values are supposed to reach a similar dimension)
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# - regular expression of the chrony output line (may not contain whitespace, case insensitive)
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# - label (may include "%d" for including the factor; may contain whitespace)
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fields="stratum 1 ^Stratum Stratum
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systime 1000 ^System.time System Time (x%d)
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frequency 1 ^Frequency Frequency (ppm)
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residualfreq 100 ^Residual.freq Residual Freq (ppm, x%d)
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skew 100 ^Skew Skew (ppm, x%d)
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rootdelay 1000 ^Root.delay Root delay (seconds, x%d)
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rootdispersion 1000 ^Root.dispersion Root dispersion (seconds, x%d)"
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# chrony example output (v2.4.1):
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# Reference ID : 131.188.3.221 (ntp1.rrze.uni-erlangen.de)
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# Stratum : 2
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# Ref time (UTC) : Thu Nov 10 22:39:50 2016
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# System time : 0.000503798 seconds slow of NTP time
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# Last offset : +0.000254355 seconds
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# RMS offset : 0.002186779 seconds
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# Frequency : 17.716 ppm slow
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# Residual freq : +0.066 ppm
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# Skew : 4.035 ppm
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# Root delay : 0.042980 seconds
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# Root dispersion : 0.005391 seconds
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# Update interval : 258.4 seconds
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# Leap status : Normal
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if [ "$1" = "autoconf" ]; then
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if [ -n "$CHRONYC" ] && [ -x "$CHRONYC" ]; then
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echo yes
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else
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echo "no (missing 'chronyc' executable)"
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fi
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exit 0
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fi
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if [ "$1" = "config" ]; then
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echo 'graph_title Chrony Tracking Stats'
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echo 'graph_args --base 1000 -l 0'
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echo 'graph_vlabel (seconds,ppm)'
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echo 'graph_category time'
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echo "$fields" | while read fieldname factor regex label; do
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# insert the factor, if "%d" is part of the label
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printf "${fieldname}.label $label\n" "$factor"
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echo "${fieldname}.type GAUGE"
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done
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exit 0
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fi
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chrony_status="$("$CHRONYC" tracking)"
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echo "$fields" | while read fieldname factor regex label; do
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status_line="$(echo "$chrony_status" | grep -i -- "$regex " | cut -d ":" -f 2-)"
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if [ -z "$status_line" ]; then
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value="U"
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else
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# the keyword "slow" indicates negative values
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value="$(echo "$status_line" | awk '{ /slow/ ? SIGN=-1 : SIGN=1; print $1 * SIGN * '"$factor"' }')"
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fi
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echo "${fieldname}.value $value"
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done
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