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Last active February 16, 2016 05:51
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redhat init script for consul
#!/bin/bash
#
# consul Manage the consul agent
#
# chkconfig: 2345 99 01
# description: Consul is a tool for service discovery and configuration
# processname: consul
# config: /etc/consul.conf
# pidfile: /var/run/consul.pid
### BEGIN INIT INFO
# Provides: consul
# Required-Start: $local_fs $network
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Manage the consul agent
# Description: Consul is a tool for service discovery and configuration
### END INIT INFO
# source function library
. /etc/rc.d/init.d/functions
prog="consul"
user="consul"
exec="/usr/local/bin/$prog"
pidfile="/var/run/$prog.pid"
lockfile="/var/lock/subsys/$prog"
logfile="/var/log/$prog.log"
conffile="/etc/consul.json"
confdir="/etc/consul.d"
# pull in sysconfig settings
[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog
export GOMAXPROCS=${GOMAXPROCS:-2}
start() {
[ -x $exec ] || exit 5
[ -f $conffile ] || exit 6
[ -d $confdir ] || exit 6
umask 077
touch $logfile $pidfile
chown $user:$user $logfile $pidfile
echo -n $"Starting $prog: "
## holy shell shenanigans, batman!
## daemon can't be backgrounded. we need the pid of the spawned process,
## which is actually done via runuser thanks to --user. you can't do "cmd
## &; action" but you can do "{cmd &}; action".
daemon \
--pidfile=$pidfile \
--user=$user \
" { $exec agent -config-file=$conffile -config-dir=$confdir &>> $logfile & } ; echo \$! >| $pidfile "
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch $lockfile
return $RETVAL
}
stop() {
echo -n $"Shutting down $prog: "
## graceful shutdown with SIGINT
killproc -p $pidfile $exec -INT
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f $lockfile
return $RETVAL
}
restart() {
stop
while ps -p `cat $pidfile`; do sleep 1; done
start
}
reload() {
echo -n $"Reloading $prog: "
killproc -p $pidfile $exec -HUP
echo
}
force_reload() {
restart
}
rh_status() {
status -p "$pidfile" -l $prog $exec
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
restart
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
exit 2
esac
exit $?
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