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Mini Shell
Mini Shell
#!/usr/bin/sh
# -*- sh -*-
: << =cut
=head1 NAME
ntp_offset - Plugin to monitor NTP time offset
=head1 CONFIGURATION
The following environment variables are used by this plugin:
nodelay - add "delay_graph no" to RRD graph configuration
=head2 EXAMPLE CONFIGURATION
[ntp_*]
env.nodelay 1 - Set to 1 to remove delay
=head1 AUTHOR
Unknown author
=head1 LICENSE
GPLv2
=head1 NOTES
Loosely based on ntp_ plugin, but reworked to shell.
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
nodelay=${nodelay:-}
do_autoconf () {
ntpq -c help >/dev/null 2>&1 || { echo 'no (no ntpq program)'; exit 0; }
case "$(ntpq -n -p 2>/dev/null | wc -l)" in
0)
echo 'no (unable to list peers)'
exit 0
;;
1|2)
echo 'no (no peers?)'
exit 0
;;
*)
echo yes
exit 0
;;
esac
}
do_config () {
syspeer="$(ntpq -n -p | grep '^[*o]')"
# shellcheck disable=SC2086
set - $syspeer
peer=$1
# Times in ms, therefore cdefs to divide to obtain seconds
# delay=$8
# offset=$9
# jitter=$10
cat <<EOF
graph_title NTP timing statistics for system peer
graph_args --base 1000 --vertical-label seconds --lower-limit 0
graph_category time
graph_info Currently our peer is $peer. Please refer to ntp docs and ntpc docs for further explanations of these numbers.
delay.label Delay
delay.cdef delay,1000,/
offset.label Offset
offset.cdef offset,1000,/
jitter.label Jitter
jitter.cdef jitter,1000,/
EOF
case $nodelay in
1) echo "delay.graph no";;
esac
}
do_ () {
# Fetch operation
syspeer="$(ntpq -n -p | grep '^[*o]')"
# shellcheck disable=SC2086
set - $syspeer
# peer=$1
# Times in ms, therefore cdefs to divide to obtain seconds
shift # Avoid having to use $10
delay=${7:-U}
offset=${8:-U}
jitter=${9:-U}
cat <<EOF
delay.value $delay
offset.value $offset
jitter.value $jitter
EOF
}
case $1 in
autoconf|config|'')
"do_$1"
exit $?
;;
*)
echo "Don't know how to do that" >&2
exit 1
;;
esac
echo 'What am I doing here?' >&2
exit 1
# vim:syntax=sh
Zerion Mini Shell 1.0