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@5thWall
Created February 5, 2011 22:10
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/etc/init.d script for unicorn and non-rails app
#!/bin/sh
#
# init.d script for single or multiple unicorn installations. Expects at least one .conf
# file in /etc/unicorn
#
# Modified by 5thWall@gmail.com http://github.com/5thWall
# based on https://gist.github.com/504875 by http://github.com/jaygooby
#
## A sample /etc/unicorn/my_app.conf
##
## ROOT=/var/apps/www/my_app/current
#
# This configures a unicorn master for your app at /var/apps/www/my_app/current running in
# production mode. It will read unicorn.rb for further set up.
#
# You should ensure different ports or sockets are set in each config/unicorn.rb if
# you are running more than one master concurrently.
#
# If you call this script without any config parameters, it will attempt to run the
# init command for all your unicorn configurations listed in /etc/unicorn/*.conf
#
# /etc/init.d/unicorn start # starts all unicorns
#
# If you specify a particular config, it will only operate on that one
#
# /etc/init.d/unicorn start /etc/unicorn/my_app.conf
set -e
sig () {
test -s "$PID" && kill -$1 `cat "$PID"`
}
oldsig () {
test -s "$OLD_PID" && kill -$1 `cat "$OLD_PID"`
}
cmd () {
case $1 in
start)
sig 0 && echo >&2 "Already running" && exit 0
echo "Starting"
$CMD
;;
stop)
sig QUIT && echo "Stopping" && exit 0
echo >&2 "Not running"
;;
force-stop)
sig TERM && echo "Forcing a stop" && exit 0
echo >&2 "Not running"
;;
restart|reload)
sig USR2 && sleep 5 && oldsig QUIT && echo "Killing old master" `cat $OLD_PID` && exit 0
echo >&2 "Couldn't reload, starting '$CMD' instead"
$CMD
;;
upgrade)
sig USR2 && echo Upgraded && exit 0
echo >&2 "Couldn't upgrade, starting '$CMD' instead"
$CMD
;;
rotate)
sig USR1 && echo rotated logs OK && exit 0
echo >&2 "Couldn't rotate logs" && exit 1
;;
*)
echo >&2 "Usage: $0 <start|stop|restart|upgrade|rotate|force-stop>"
exit 1
;;
esac
}
setup () {
echo -n "$ROOT: "
cd $ROOT || exit 1
export PID=$ROOT/tmp/unicorn.pid
export OLD_PID="$PID.oldbin"
CMD="/usr/local/bin/unicorn -c unicorn.rb -D"
}
start_stop () {
# either run the start/stop/reload/etc command for every config under /etc/unicorn
# or just do it for a specific one
# $1 contains the start/stop/etc command
# $2 if it exists, should be the specific config we want to act on
if [ $2 ]; then
. $2
setup
cmd $1
else
for CONFIG in /etc/unicorn/*.conf; do
# import the variables
. $CONFIG
setup
# run the start/stop/etc command
cmd $1
done
fi
}
ARGS="$1 $2"
start_stop $ARGS
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