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#!/bin/bash
# app-name daemon
# chkconfig: 345 20 80
# description: app-name daemon
# processname: process_name
# This init.d script makes twp assumptions
# 1) The script is run by root. Only root has the rights to su to the RUNTIME_USER.
# 2) The RUNTIME_USER a system user. Any user should work, so long as they have permissions to the project files.
NAME="app-name"
DESC="app-name daemon"
RUNTIME_USER="username"
SRC_PATH="/working/directory/for/app-name"
START_CMD="/path/to/executable --argument1 --argument2"
RELOAD_CMD="/path/to/executable --argument1 --argument2"
PROCMATCH="searchable process string"
PID="$(pgrep -f "${PROCMATCH}")"
case "$1" in
start)
if [[ ! $(id -u) -eq 0 ]]; then
echo "The ${NAME} service must be started as root!"
exit 1
fi
if [[ "${PID}" ]]; then
echo "${NAME} already running, PID: ${PID}"
else
printf "%-40s\n" "Starting ${NAME}..."
su ${RUNTIME_USER} bash -c "cd ${SRC_PATH}; ${START_CMD}"
PID="$(pgrep -f "${PROCMATCH}")"
if [[ "${PID}" ]]; then
echo "${NAME} running, PID: ${PID}"
else
printf "-40%s\n" "Unable to start ${NAME}"
exit 1
fi
fi
;;
reload)
if [[ ! $(id -u) -eq 0 ]]; then
echo "The ${NAME} service must be reloaded as root!"
exit 1
fi
else
printf "%-40s\n" "Reloading ${NAME}..."
su ${RUNTIME_USER} bash -c "${RELOAD_CMD}"
if [[ $? -eq 0 ]]; then
echo "${NAME} reloaded"
else
printf "-40%s\n" "Unable to reload ${NAME}"
exit 1
fi
fi
;;
status)
printf "%-40s\n" "Checking ${NAME}..."
if [[ "${PID}" ]]; then
echo "${NAME} running, PID: ${PID}"
else
printf "%-40s\n" "Service not running"
exit 1
fi
;;
stop)
if [[ ! $(id -u) -eq 0 ]]; then
echo "The ${NAME} service must be stopped as root!"
exit 1
fi
printf "%-40s\n" "Stopping ${NAME}, PID: ${PID}"
kill "${PID}"
if [[ $(pgrep -f "${PROCMATCH}") ]]; then
printf "%-40s" "${NAME} still running. Attempting hard stop."
kill -9 "${PID}"
if [[ $(pgrep -f "${PROCMATCH}") ]]; then
printf "%-40s\n" "Unable to stop ${NAME}"
else
printf "%-40s\n" "${NAME} stopped"
fi
else
printf "%-40s\n" "${NAME} stopped"
fi
;;
restart)
$0 stop
$0 start
;;
*)
echo "Usage: $0 {status|start|stop|reload|restart}"
exit 1
;;
esac
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