feat: [ci skip] add debian/ubuntu init script.

contrib/init/debian/README.md

@@ -0,0 +1,37 @@
+# Run gorush in Debian/Ubuntu
+
+## Installation
+
+Put `gorush` binary into `/usr/bin` folder.
+
+```sh
+cp gorush /usr/bin/
+chmod +x /usr/bin/gorush
+```
+
+put `gorush` init script into `/etc/rc.d`
+
+```sh
+cp contrib/init/debian/gorush /etc.rc.d/
+```
+
+install and remove System-V style init script links
+
+```sh
+update-rc.d gorush start 20 2 3 4 5 . stop 80 0 1 6 .
+```
+
+## Start service
+
+create gorush configuration file.
+
+```sh
+mkdir -p /etc/gorush
+cp config/config.yml /etc/gorush/
+```
+
+start gorush service.
+
+```sh
+/etc/init.d/gorush start
+```

contrib/init/debian/gorush

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+#!/bin/sh
+
+### BEGIN INIT INFO
+# Provides:          gorush
+# Required-Start:    $syslog $network
+# Required-Stop:     $syslog $network
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: starts the gorush web server
+# Description:       starts gorush using start-stop-daemon
+### END INIT INFO
+
+# Original Author: Bo-Yi Wu (appleboy)
+
+# Do NOT "set -e"
+PATH=/sbin:/usr/sbin:/bin:/usr/bin
+DESC="the gorush web server"
+NAME=gorush
+DAEMON=$(which gorush)
+
+DAEMONUSER=www-data
+PIDFILE=/var/run/$NAME.pid
+CONFIGFILE=/etc/gorush/config.yml
+DAEMONOPTS="-c $CONFIGFILE"
+
+USERBIND="setcap cap_net_bind_service=+ep"
+STOP_SCHEDULE="${STOP_SCHEDULE:-QUIT/5/TERM/5/KILL/5}"
+
+# Read configuration variable file if it is present
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+
+# Exit if the package is not installed
+[ -x "$DAEMON" ] || exit 0
+
+# Set the ulimits
+ulimit -n 8192
+
+do_start()
+{
+  $USERBIND $DAEMON
+  sh -c "USER=$DAEMONUSER start-stop-daemon --start --quiet --pidfile $PIDFILE --make-pidfile \\
+    --background --chuid $DAEMONUSER --exec $DAEMON -- $DAEMONOPTS"
+}
+
+do_stop()
+{
+  start-stop-daemon --stop --quiet --retry=$STOP_SCHEDULE --pidfile $PIDFILE --name $NAME --oknodo
+  rm -f $PIDFILE
+}
+
+do_status()
+{
+  if [ -f $PIDFILE ]; then
+    if kill -0 $(cat "$PIDFILE"); then
+      echo "$NAME is running, PID is $(cat $PIDFILE)"
+    else
+      echo "$NAME process is dead, but pidfile exists"
+    fi
+  else
+    echo "$NAME is not running"
+  fi
+}
+
+case "$1" in
+  start)
+    echo "Starting $DESC" "$NAME"
+    do_start
+    ;;
+  stop)
+    echo "Stopping $DESC" "$NAME"
+    do_stop
+    ;;
+  status)
+    do_status
+    ;;
+  restart)
+    echo "Restarting $DESC" "$NAME"
+    do_stop
+    do_start
+    ;;
+  *)
+    echo "Usage: $SCRIPTNAME {start|stop|status|restart}" >&2
+    exit 2
+    ;;
+esac
+
+exit 0