Up to 1.21.4.

[packages/nginx.git] / nginx.init

diff --git a/nginx.init b/nginx.init
index 8cd240e4e5d5bc847b0303ffa3a9e3a4f2eb8ffb..1d62b97a8577ea655521e4496666881d7440489d 100755 (executable)
--- a/nginx.init
+++ b/nginx.init
@@ -1,13 +1,13 @@
 #!/bin/sh
 #
-# nginx        Nginx Web Server (@flavor@ version)
+# nginx        Nginx Web Server (@type@ version)
 #
 # chkconfig:   345 85 15
 # description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
 #               proxy and IMAP/POP3 proxy server
-# processname: nginx-@flavor@
-# pidfile:     /var/run/nginx-@flavor@.pid
-# config:      /etc/nginx/nginx-@flavor@.conf
+# processname: nginx
+# pidfile:     /var/run/nginx.pid
+# config:      /etc/nginx/nginx.conf
 
 # Source function library
 . /etc/rc.d/init.d/functions
@@ -15,8 +15,8 @@
 # Source networking configuration.
 . /etc/sysconfig/network
 
-nginx="/usr/sbin/nginx-@flavor@"
-svname="nginx (@flavor@)"
+nginx="/usr/sbin/nginx"
+svname="nginx"
 prog=${nginx##*/}
 
 sysconfig="/etc/sysconfig/$prog"
@@ -38,9 +38,46 @@ else
        exit 0
 fi
 
+# configtest itself
+# must return non-zero if check failed
+# output is discarded if checkconfig is ran without details
+configtest() {
+       $nginx -t -c $NGINX_CONF_FILE
+}
+
+# wrapper for configtest
+checkconfig() {
+       local details=${1:-0}
+
+       if [ $details = 1 ]; then
+               # run config test and display report (status action)
+               show "Checking %s configuration" "$svname"; busy
+               local out
+               out=$(configtest 2>&1)
+               RETVAL=$?
+               if [ $RETVAL = 0 ]; then
+                       ok
+               else
+                       fail
+               fi
+               [ "$out" ] && echo >&2 "$out"
+       else
+               # run config test and abort with nice message if failed
+               # (for actions checking status before action).
+               configtest >/dev/null 2>&1
+               RETVAL=$?
+               if [ $RETVAL != 0 ]; then
+                       show "Checking %s configuration" "$svname"; fail
+                       nls 'Configuration test failed. See details with %s "checkconfig"' $0
+                       exit $RETVAL
+               fi
+       fi
+}
+
 start() {
        # Check if the service is already running?
        if [ ! -f $lockfile ]; then
+               checkconfig
                msg_starting "$svname"
                daemon $nginx -c $NGINX_CONF_FILE
                RETVAL=$?
@@ -51,48 +88,125 @@ start() {
 }
 
 stop() {
+       local oldbin_pidfile="${pidfile}.oldbin"
+
        # Stop daemons.
        if [ -f $lockfile ]; then
-               msg_stopping "$svname"
-               killproc --waitforname $prog --waitfortime 60 $prog
-               # Delete pidfile only when nginx was called successfully
-               if [ $? -eq 0 ]; then
-                       rm -f $lockfile $pidfile >/dev/null 2>&1
+               if [ -f $oldbin_pidfile ] && [ -f $pidfile ]; then
+                       msg_stopping "$svname (old process)"
+                       killproc -p $oldbin_pidfile $prog -TERM
                fi
+               msg_stopping "$svname"
+               killproc -p $pidfile $prog
+               RETVAL=$?
+               rm -f $lockfile $pidfile >/dev/null 2>&1
+       else
+               msg_not_running "$svname"
+       fi
+}
+
+reload() {
+       if [ -f $lockfile ]; then
+               checkconfig
+               msg_reloading "$svname"
+               killproc -p $pidfile $prog -HUP
+               RETVAL=$?
        else
                msg_not_running "$svname"
+               RETVAL=7
+       fi
+}
+
+condrestart() {
+       if [ ! -f $lockfile ]; then
+               msg_not_running "$svname"
+               RETVAL=$1
+               return
        fi
+
+       checkconfig
+       stop
+       start
+}
+
+# Upgrade the binary with no downtime.
+# http://nginx.org/en/docs/control.html#upgrade
+# TODO: handle revert back on failed upgrade
+upgrade() {
+       local oldbin_pidfile="${pidfile}.oldbin" retry
+
+       checkconfig
+       show "Upgrading $svname"
+       killproc -p $pidfile $prog -USR2
+       RETVAL=$?
+
+       # wait for 15s
+       retry=60
+       while [ $retry -gt 0 ]; do
+               if [ -f $oldbin_pidfile ] && [ -f $pidfile ]; then
+                       show "Upgrade: stopping old process"
+                       killproc -p $oldbin_pidfile $prog -QUIT
+                       return 0
+               else
+                       usleep 250000
+                       retry=$(($retry -1))
+               fi
+       done
+
+       show "Upgrade: stopping old process"; fail
+       nls 'old process pid file was not found'
+       return 1
+}
+
+# Tell nginx to reopen logs
+# http://nginx.org/en/docs/control.html#logs
+reopen_logs() {
+       local oldbin_pidfile="${pidfile}.oldbin"
+
+       if [ -f $oldbin_pidfile ]; then
+               show "Reopening $svname (oldbin) logs"
+               killproc -p $oldbin_pidfile $prog -USR1
+       fi
+
+       show "Reopening $svname logs"
+       killproc -p $pidfile $prog -USR1
 }
 
 RETVAL=0
 # See how we were called.
 case "$1" in
   start)
-       start
+       start
        ;;
   stop)
-       stop
-       ;;
-  status)
-       status $prog
-       RETVAL=$?
+       stop
        ;;
   restart)
+       checkconfig
        stop
        start
        ;;
-  reload|force-reload|graceful)
-       if [ -f $lockfile ]; then
-               msg_reloading "$svname"
-               killproc $prog -HUP
-               RETVAL=$?
-       else
-               msg_not_running "$svname"
-               RETVAL=7
-       fi
+  try-restart)
+       condrestart 0
+       ;;
+  reload|graceful)
+       reload
+       ;;
+  force-reload|upgrade)
+       upgrade
+       ;;
+  reopen-logs)
+       reopen_logs
+       ;;
+  checkconfig|configtest)
+       checkconfig 1
+       ;;
+  status)
+       status --pidfile $pidfile $prog
+       RETVAL=$?
        ;;
   *)
-       msg_usage "$0 {start|stop|restart|reload|force-reload|graceful|status}"
+       msg_usage "$0 {start|stop|restart|try-restart|reload|force-reload|graceful|reopen-logs|checkconfig|status}"
        exit 3
        ;;
 esac