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#!/bin/bash
#SMOKEPING_VERSION="2.8.3"
SMOKEPING_PIDFILE="/run/smokeping/smokeping.pid"
SMOKEPING_USER=@SMOKEPING_USER@
SMOKEPING_PATH=@SMOKEPING_PATH@
SMOKEPING_CONFIG_PATH=@SMOKEPING_CONFIG_PATH@
SMOKEPING_LOG_PATH="/var/log/smokeping.nosyslog.log"
get_child_pids() {
if [[ -z "$1" ]]; then echo "get_child_pids:error: \$1 is empty " 1>&2 ; exit 1 ; fi
local parent_pid=$1
ps -o pid --no-headers --ppid $parent_pid
}
# Function to recursively get all descendant PIDs
get_descendant_pids() {
if [[ -z "$1" ]]; then echo "get_descendant_pids:error: \$1 is empty " 1>&2 ; exit 1 ; fi
local parent_pid=$1
local child_pids=$(get_child_pids $parent_pid)
for pid in $child_pids; do
echo $pid
get_descendant_pids $pid
done
}
function start
{
export LC_ALL=C
# no idea why this is required
# https://github.com/oetiker/SmokePing/issues/29
cd /var/lib/smokeping
mkdir -p /run/smokeping/
chown $SMOKEPING_USER /run/smokeping/
touch "$SMOKEPING_LOG_PATH"
chown $SMOKEPING_USER "$SMOKEPING_LOG_PATH"
if [[ -e $SMOKEPING_PIDFILE && ( "" == "$(cat $SMOKEPING_PIDFILE)" ) ]]
then
printf "Pid file is empty: %s\n" "$SMOKEPING_PIDFILE" 1>&2
elif [[ -e $SMOKEPING_PIDFILE && ( "" != "$(cat $SMOKEPING_PIDFILE)" ) ]]
then
PID=$(cat "$SMOKEPING_PIDFILE")
printf "PID=%s\n" "$PID"
if ps --pid "$PID"
then
printf "Smokeping already running with pid %d.\n" "$PID" 1>&2
return 1
else
printf "You have bogus pid file!\n" 1>&2
rm "$SMOKEPING_PIDFILE"
fi
fi
/sbin/setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' /usr/sbin/fping
if ! su smokeping -s/bin/sh -c "$SMOKEPING_PATH --config=$SMOKEPING_CONFIG_PATH --logfile=$SMOKEPING_LOG_PATH"
then
printf "Smokeping failed to start!\n" 1>&2
return 2
fi
if [[ ! -e $SMOKEPING_PIDFILE ]]
then
printf "Smokeping pidfile missing!\n" 1>&2
return 3
elif [[ "" == $(cat $SMOKEPING_PIDFILE | tr -d '\n' ) ]]
then
printf "Pid file %s empty.\n" $(cat $SMOKEPING_PIDFILE) 1>&2
else
PID=$(cat "$SMOKEPING_PIDFILE")
if ps --pid "$PID"
then
:
else
printf "Smokeping created pidfile, but is not running!\n" 1>&2
return 4
fi
fi
rm -f /run/smokeping-fcgi.sock
/usr/bin/spawn-fcgi -u $SMOKEPING_USER -s /run/smokeping-fcgi.sock -M 660 -U $SMOKEPING_USER -- /var/www/htdocs/smokeping/smokeping.fcgi
return 0
}
function stop()
{
if [[ ! -e "$SMOKEPING_PIDFILE" ]]; then
printf "Pid file %s does not exist!\n" "$SMOKEPING_PIDFILE"
return 6
elif [[ "" == "$(cat "$SMOKEPING_PIDFILE")" ]] ; then
printf "Pid file %s empty!\n" "$SMOKEPING_PIDFILE"
return 6
fi
child_pids=$(get_descendant_pids $(cat "$SMOKEPING_PIDFILE"))
printf "Full pid list (smokeping+children):%s\n" "$(cat "$SMOKEPING_PIDFILE") $child_pids"
/bin/kill --timeout 3000 TERM --timeout 1000 KILL --signal QUIT $(cat "$SMOKEPING_PIDFILE") $child_pids
rm -f "$SMOKEPING_PIDFILE"
if pgrep -f 'bin/smokeping ' -la >/dev/null 2>&1 # the space is important
then
printf "Killing smokeping failed!\n" 1>&2
pgrep -f 'bin/smokeping' -la
fi
/bin/kill --timeout 3000 TERM --timeout 1000 KILL --signal QUIT $(/usr/sbin/ss -f unix -l -p | grep /run/smokeping-fcgi.sock | sed -E 's/.*pid=([[:digit:]]+),.*/\1/g')
rm /run/smokeping-fcgi.sock
}
case "$1" in
start)
printf "case up\n"
start
exit "$?"
;;
stop)
printf "case down\n"
stop
exit "$?"
;;
status)
if [[ -e "$SMOKEPING_PIDFILE" && "" != $(cat "$SMOKEPING_PIDFILE") ]] ; then
pstree -s -p $(cat "$SMOKEPING_PIDFILE")
else
printf "smokeping is not running or not running from this service.\n"
fi
cgi_pid=$(/usr/sbin/ss -f unix -l -p | grep /run/smokeping-fcgi.sock | sed -E 's/.*pid=([[:digit:]]+),.*/\1/g' 2>/dev/null)
if [[ "" == "$cgi_pid" ]] ; then
printf "smokeping_cgi is not running or not running from this service.\n"
else
pstree -s -p "$cgi_pid"
fi
;;
restart)
if ! stop
then
exit "$?"
fi
if ! start
then
exit "$?"
fi
;;
*) printf "usage: {up,down,restart,status}\n"
esac
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