path: root/heartbeat/nginx

#!/bin/sh
#
#	High-Availability nginx OCF resource agent
# 
# nginx
#
# Description:	starts/stops nginx servers.
#
# Author:	Alan Robertson
#		Dejan Muhamedagic
#		This code is based significantly on the apache resource agent
#
# Support:	users@clusterlabs.org
#
# License:	GNU General Public License (GPL)
#
# Copyright:	(C) 2002-2010 International Business Machines
#
#
# Our parsing of the nginx config files is very rudimentary.
# It'll work with lots of different configurations - but not every
# possible configuration.
#
# Patches are being accepted ;-)
#
# OCF parameters:
#  OCF_RESKEY_configfile
#  OCF_RESKEY_nginx
#  OCF_RESKEY_port
#  OCF_RESKEY_options
#  OCF_RESKEY_status10regex
#  OCF_RESKEY_status10url
#  OCF_RESKEY_client
#  OCF_RESKEY_test20url
#  OCF_RESKEY_test20regex
#  OCF_RESKEY_test20conffile
#  OCF_RESKEY_test20name
#  OCF_RESKEY_external_monitor30_cmd
#
#
#	TO DO:
#		More extensive tests of extended monitor actions
#		Look at the --with-http_stub_status_module for validating
#			the configuration?  (or is that automatically done?)
#			Checking could certainly result in better error
#			messages.
#		Allow for the fact that the config file and so on might all be
#			on shared disks - this affects the validate-all option.


: ${OCF_FUNCTIONS_DIR=$OCF_ROOT/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs

# Parameter defaults

OCF_RESKEY_httpd_default="/usr/sbin/httpd"
OCF_RESKEY_status10regex_default="Reading: [0-9]+ Writing: [0-9]+ Waiting: [0-9]+"

: ${OCF_RESKEY_httpd=${OCF_RESKEY_httpd_default}}
: ${OCF_RESKEY_status10regex=${OCF_RESKEY_status10regex_default}}

HA_VARRUNDIR=${HA_VARRUN}

#######################################################################
#
#	Configuration options - usually you don't need to change these
#
#######################################################################
#
NGINXDLIST="/usr/sbin/nginx /usr/local/sbin/nginx"

# default options for http clients
# NB: We _always_ test a local resource, so it should be
# safe to connect from the local interface.
WGETOPTS="-O- -q -L --no-proxy --bind-address=127.0.0.1"
CURLOPTS="-o - -Ss -L --interface lo"

LOCALHOST="http://localhost"
NGINXDOPTS=""
#
#
#	End of Configuration options
#######################################################################

CMD=`basename $0`

#	The config-file-pathname is the pathname to the configuration
#	file for this web server.  Various appropriate defaults are
#	assumed if no config file is specified.
usage() {
  cat <<-EOF
usage: $0 action

action:
	start	start nginx

	stop	stop nginx

	reload	reload the nginx configuration

	status	return the status of web server, running or stopped

	monitor  return TRUE if the web server appears to be working.
                For this to be supported you must configure mod_status
		and give it a server-status URL - or configure what URL
		you wish to be monitored.  You have to have installed
		either curl or wget for this to work.

	meta-data	show meta data message

	validate-all	validate the instance parameters
	EOF
  exit $1
}

#
# run the http client
#
curl_func() {
	cl_opts="$CURLOPTS $test_httpclient_opts"
	if
	  [ x != "x$test_user" ]
        then
	  echo "-u $test_user:$test_password" |
	  curl -K - $cl_opts "$1"
	else
	  curl $cl_opts "$1"
	fi
}
wget_func() {
	auth=""
	cl_opts="$WGETOPTS $test_httpclient_opts"
	[ x != "x$test_user" ] &&
		auth="--http-user=$test_user --http-passwd=$test_password"
	wget $auth $cl_opts "$1"
}
#
# rely on whatever the user provided
userdefined() {
	$test_httpclient $test_httpclient_opts "$1"
}

#
# find a good http client
#
findhttpclient() {
	# prefer curl if present...
	if
          [ "x$CLIENT" != x ]
        then
		echo "$CLIENT"
	elif
          which curl >/dev/null 2>&1
        then
		echo "curl"
	elif
          which wget >/dev/null 2>&1
        then
		echo "wget"
	else
		return 1
	fi
}
gethttpclient() {
	[ -z "$test_httpclient" ] &&
		test_httpclient=$ourhttpclient
	case "$test_httpclient" in
		curl|wget) echo ${test_httpclient}_func;;  #these are supported
		*) echo userdefined;;
	esac
}

# test configuration good?
is_testconf_sane() {
	if
          [ "x$test_regex" = x -o "x$test_url" = x ]
        then
	  ocf_exit_reason "test regular expression or test url empty"
	  return 1
	fi
	if
          [ "x$test_user$test_password" != x -a \( "x$test_user" = x -o "x$test_password" = x \) ]
        then
	  ocf_exit_reason "bad user authentication for extended test"
	  return 1
	fi
	return 0
}
#
# read the test definition from the config
#
readtestconf() {
  test_name="$1" # we look for this one or the first one if empty
  lcnt=0
  readdef=""
  test_url="" test_regex=""
  test_user="" test_password=""
  test_httpclient="" test_httpclient_opts=""

  while
    read key value
  do
    lcnt=$((lcnt+1))
    if
      [ "$readdef" ]
    then
      case "$key" in
		"url") test_url="$value" ;;
		"user") test_user="$value" ;;
		"password") test_password="$value" ;;
		"client") test_httpclient="$value" ;;
		"client_opts") test_httpclient_opts="$value" ;;
		"match") test_regex="$value" ;;
		"end") break ;;
		"#"*|"") ;;
		*) ocf_exit_reason "$lcnt: $key: unknown keyword"; return 1 ;;
      esac
    else
      [ "$key" = "test" ] &&
      [ -z "$test_name" -o "$test_name" = "$value" ] &&
      readdef=1
    fi
  done
}

nginxcat() {
  awk '
	function procline() {
		split($0,a);
		if( a[1]~/^[Ii]nclude$/ ) {
			procinclude(a[2]);
		} else {
			if( a[1]=="root" ) {
				rootdir=a[2];
				gsub("\"","",rootdir);
			}
			print;
		}
	}
	function printfile(infile, a) {
		while( (getline<infile) > 0 ) {
			procline();
		}
		close(infile);
	}
	function allfiles(dir, cmd,f) {
		cmd="find -L "dir" -type f";
		while( ( cmd | getline f ) > 0 ) {
			printfile(f);
		}
		close(cmd);
	}
	function listfiles(pattern, cmd,f) {
		cmd="ls "pattern" 2>/dev/null";
		while( ( cmd | getline f ) > 0 ) {
			printfile(f);
		}
		close(cmd);
	}
	function procinclude(spec) {
		if( rootdir!="" && spec!~/^\// ) {
			spec=rootdir"/"spec;
		}
		if( isdir(spec) ) {
			allfiles(spec); # read all files in a directory (and subdirs)
		} else {
			listfiles(spec); # there could be jokers
		}
	}
	function isdir(s) {
		return !system("test -d \""s"\"");
	}
	{ procline(); }
	' $1 |
  sed 's/#.*//;s/[[:blank:]]*$//;s/^[[:blank:]]*//' |
  grep -v '^$'
}

#
# set parameters (as shell vars) from our nginx config file
#
get_nginx_params() {
  configfile=$1
  shift 1
  vars=`echo "$@" | sed 's/ /,/g'`

  eval `
  nginxcat $configfile | awk -v vars="$vars" '
  BEGIN{
    split(vars,v,",");
    for( i in v )
  	  vl[i]=tolower(v[i]);
  }
  {
	  for( i in v )
	  	if( tolower($1)==vl[i] ) {
			print v[i]"="$2
			delete vl[i]
			break
		}
  }
  '`
}

#
#	Return the location(s) that are handled by the given handler
#
FindLocationForHandler() {
  PerlScript='while (<>) {
	/^\s*location\s+([^ \s{]+)\s*{/i && ($loc=$1);
	/^\s*stub_status\s+on\s*;$2/i && print "$loc\n"; 
  }'
  nginxcat $1 | perl -e "$PerlScript"
}

#
#	Check if the port is valid
#
CheckPort() {
  lclport="$1"
  case "$lclport" in
    *:[0-9]*)	lclport=`echo "$lclport" | sed 's%^[^:][^:]*:%%'`
  esac
  ocf_is_decimal "$lclport" && [ $lclport -gt 0 -a $lclport -lt 65537 ]
}

buildlocalurl() {
  [ "x$listen" != "x" ] &&
	echo "http://${listen}" ||
	echo "${LOCALHOST}:${PORT}"
}
#
#	Get all the parameters we need from the Nginx config file
#
GetParams() {
  ConfigFile=$1
  DEFAULT_PID=`echo "$NGINX_CONFIGURATION" | sed -e 's%.*--pid-path=%%' -e 's% *--.*%%'`
  if
    [ ! -f $ConfigFile ]
  then
    return 1
  fi

  get_nginx_params $ConfigFile root pid listen
  PidFile="$pid"
  case $PidFile in
    "")	PidFile=$DEFAULT_PID	;;
    *)				;;
  esac

  for p in "$PORT" "$listen" 80
  do
    if
      CheckPort "$p"
    then
      PORT="$p"
      break
    fi
  done
 
  echo $listen | grep ':' >/dev/null ||  # Listen could be just port spec
	  listen="localhost:$listen"

  #
  # It's difficult to figure out whether the server supports
  # the status operation.
  # (we start our server with -DSTATUS - just in case :-))
  #
  # Typically (but not necessarily) the status URL is /nginx_status
  #
  # For us to think status will work, we have to have the following things:
  #
  # - The server-status handler has to be mapped to some URL somewhere
  #
  # We assume that:
  #
  # - the "main" web server at $PORT will also support it if we can find it
  #	somewhere in the file
  # - it will be supported at the same URL as the one we find in the file
  #
  # If this doesn't work for you, then set the status10url attribute.
  #
  if
     [ "X$STATUSURL" = "X" ]
  then
      StatusURL=`FindLocationForHandler $1 nginx_status | tail -1`
      STATUSURL="`buildlocalurl`$StatusURL"
  fi
  test ! -z "$PidFile"
}

#
# return TRUE if a process with given PID is running
#
ProcessRunning() {
    NginxPID=$1
    # Use /proc if it looks like it's here...
    if
      [ -d /proc -a -d /proc/1 ]
    then
       [ -d /proc/$NginxPID ]
    else
      #  This assumes we're running as root...
      kill -0 "$NginxPID" >/dev/null 2>&1
    fi
}


silent_status() {
  if
    [ -f $PidFile  -a  -s $PidFile ]  && ocf_is_decimal "`cat $PidFile`"
  then
    ProcessRunning `cat $PidFile`
  else
    : No pid file
    false
  fi
}

start_nginx() {
  if
    silent_status
  then
    ocf_log info "$CMD already running (pid $NginxPID)"
    return $OCF_SUCCESS
  fi
  if 
    ocf_run $NGINXD $OPTIONS -t -c $CONFIGFILE
  then
    : Configuration file $CONFIGFILE looks OK
  else
    return $OCF_ERR_INSTALLED
  fi
  NGINX_VERSION=`$NGINXD -v 2>&1`
  ocf_log info "Starting $NGINXD - $NGINX_VERSION"
  ocf_log info "$NGINXD build configuration: $NGINX_CONFIGURATION"
  if 
    ocf_run $NGINXD $NGINXDOPTS $OPTIONS -c $CONFIGFILE
  then
    : $NGINXD started without errors!
  else
    return $OCF_ERR_GENERIC
  fi
  tries=0
  # This looks like a potential infinite loop - but it's not in practice
  # The LRM will time us out and kill us if nginx never starts working.
  while
    monitor_nginx
    ec=$?
    if
      [ $ec -eq $OCF_NOT_RUNNING ]
    then
      tries=`expr $tries + 1`
      ocf_log info "Waiting for $NGINXD $OPTIONS -c $CONFIGFILE to come up (try $tries)"
      true
    else
      false
    fi
  do
    sleep 1
  done
  return $ec
}

stop_nginx() {
  if
    silent_status
  then
    if
      kill $NginxPID
    then
      tries=0
      while
        ProcessRunning $NginxPID && [ $tries -lt 10 ]
      do
        sleep 1
        kill $NginxPID >/dev/null 
        ocf_log info "Killing nginx PID $NginxPID"
        tries=`expr $tries + 1`
      done
    else
      ocf_log warn "Killing nginx PID $NginxPID FAILED."
    fi
    if
      ProcessRunning $NginxPID
    then
      ocf_log info "$CMD still running ($NginxPID)."
      false
    else
      ocf_log info "$CMD stopped."
    fi
  else
    ocf_log info "$CMD is not running."
  fi

  #
  #	I'm not convinced this is a wonderful idea (AlanR)
  #
  for sig in SIGTERM SIGHUP SIGKILL
  do
    if
      pgrep -f "$NGINXD.*$CONFIGFILE" >/dev/null
    then
      pkill -$sig -f $NGINXD.*$CONFIGFILE >/dev/null
      ocf_log info "nginxd children were signalled ($sig)"
      sleep 1
    else
      break
    fi
  done
}

reload_nginx() {
  if
    silent_status
  then
    if
      kill -1 $NginxPID
    then
      : $NGINX reload signal to $NginxPID succeeded
      return $OCF_SUCCESS
    fi
    return $OCF_ERR_GENERIC
  fi
  start_nginx
}

status_nginx() {
  silent_status
  rc=$?
  if
    [ $rc -eq 0 ]
  then
    ocf_log info "$CMD is running (pid $NginxPID)."
    return $OCF_SUCCESS
  else
    ocf_log info "$CMD is stopped."
    return $OCF_NOT_RUNNING
  fi
}

fixtesturl() {
	echo $test_url | grep -qs "^http" && return
	test_url="`buildlocalurl`$test_url"
}

monitor_nginx_external() {
  if
    [ -z "$EXTMONITOR" ]
  then
    ocf_exit_reason "$External level 30 Monitor Command not configured."
    return $OCF_ERR_CONFIGURED
  fi
  extbase=`echo $EXTMONITOR | sed 's% .*%%'`
  if
    case "$extbase" in
      /*)	test -f "$extbase" -a -x "$extbase";;
      *)	which "$extbase" >/dev/null 2>&1
    esac
  then
    : OK - $extbase seems to be there...
  else
    ocf_exit_reason "$External monitor command [$extbase] is not installed."
    return $OCF_ERR_CONFIGURED
  fi
  if
    $extbase
  then
    : OK - $extbase succeeded
  else
    ocf_exit_reason "$extbase reported failure [rc=$?]"
    return $OCF_NOT_RUNNING
  fi
  return $OCF_SUCCESS
}


monitor_nginx_extended() {
  if
    [ -f "$TESTCONFFILE" -a -r "$TESTCONFFILE" ]
  then
    readtestconf < $TESTCONFFILE
  else
    test_url="$TESTURL"
    test_regex="$TESTREGEX20"
  fi
  whattorun=`gethttpclient`
  fixtesturl
  is_testconf_sane || return $OCF_ERR_CONFIGURED
  $whattorun "$test_url" | grep -Ei "$test_regex" > /dev/null
}

monitor_nginx_basic() {
  if
    [ -z "$STATUSURL" ]
  then
    ocf_exit_reason "status10url parameter empty"
    return $OCF_ERR_CONFIGURED
  elif
    [ -z "$ourhttpclient" ]
  then
    ocf_exit_reason "could not find a http client; make sure that either wget or curl is available"
	return $OCF_ERR_CONFIGURED
  fi
  ${ourhttpclient}_func "$STATUSURL" | grep -Ei "$TESTREGEX" > /dev/null
}

monitor_nginx() {
  silent_status
  if
    [ $? -ne 0 ]
  then
    ocf_log info "$CMD not running"
    return $OCF_NOT_RUNNING
  fi
  if
    [ -z "$OCF_CHECK_LEVEL" ] || [ "$OCF_CHECK_LEVEL" -lt 10  ]
  then
    return 0
  fi
  ourhttpclient=`findhttpclient`  # we'll need one
  if
    [ "$OCF_CHECK_LEVEL" -lt 20 ]
  then
    monitor_nginx_basic
  elif
    [ "$OCF_CHECK_LEVEL" -lt 30 ]
  then
    monitor_nginx_extended
  else
    monitor_nginx_external
  fi
}

metadata_nginx(){
	cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="nginx" version="1.0">
<version>1.0</version>

<longdesc lang="en">
This is the resource agent for the Nginx web/proxy server.
This resource agent does not monitor POP or IMAP servers, as
we don't know how to determine meaningful status for them.

The start operation ends with a loop in which monitor is
repeatedly called to make sure that the server started and that
it is operational. Hence, if the monitor operation does not
succeed within the start operation timeout, the nginx resource
will end with an error status.

The default monitor operation will verify that nginx is running.

The level 10 monitor operation by default will try and fetch the /nginx_status
page - which is commented out in sample nginx configurations.
Make sure that the /nginx_status page works and that the access
is restricted to localhost (address 127.0.0.1) plus whatever
places _outside the cluster_ you want to monitor the server from.
See the status10url and status10regex attributes for more details.

The level 20 monitor operation will perform a more complex set of tests
from a configuration file.

The level 30 monitor operation will run an external command to perform
an arbitrary monitoring operation.

</longdesc>
<shortdesc lang="en">Manages an Nginx web/proxy server instance</shortdesc>

<parameters>

<parameter name="configfile" required="0" unique="1">
<longdesc lang="en">
The full pathname of the Nginx configuration file.
This file is parsed to provide defaults for various other
resource agent parameters.
</longdesc>
<shortdesc lang="en">configuration file path</shortdesc>
<content type="string"/>
</parameter>

<parameter name="httpd">
<longdesc lang="en">
The full pathname of the httpd binary (optional).
</longdesc>
<shortdesc lang="en">httpd binary path</shortdesc>
<content type="string" default="${OCF_RESKEY_httpd_default}" />
</parameter>

<parameter name="port" >
<longdesc lang="en">
A port number that we can probe for status information
using the statusurl.
This will default to the port number found in the
configuration file, or 80, if none can be found
in the configuration file.

</longdesc>
<shortdesc lang="en">httpd port</shortdesc>
<content type="integer" />
</parameter>

<parameter name="status10url">
<longdesc lang="en">
The URL to monitor (the nginx server status page by default) when given a level 10 monitor operation.
If left unspecified, it will be inferred from
the nginx configuration file, or defaulted to /nginx_status.

If you set this, make sure that it succeeds *only* from the
localhost (127.0.0.1) and no other cluster nodes.
Otherwise, the cluster software may complain
about it being active on multiple nodes.
</longdesc>
<shortdesc lang="en">url name</shortdesc>
<content type="string" />
</parameter>

<parameter name="status10regex">
<longdesc lang="en">
Regular expression to match in the output of status10url.
Case insensitive.
</longdesc>
<shortdesc lang="en">monitor regular expression</shortdesc>
<content type="string" default="${OCF_RESKEY_status10regex_default}"/>
</parameter>

<parameter name="testclient">
<longdesc lang="en">
Client to use to query to Nginx for level 10 and level 20 tests.
If not specified, the RA will try to find one on the system.
Currently, wget and curl are supported, with curl being preferred.
For example, you can set this parameter to "wget" if you prefer that to curl.
</longdesc>
<shortdesc lang="en">http client</shortdesc>
<content type="string" />
</parameter>

<parameter name="test20url">
<longdesc lang="en">
URL to test. If it does not start with "http", then it's
considered to be relative to the document root address.
</longdesc>
<shortdesc lang="en">Level 20 monitor url</shortdesc>
<content type="string" />
</parameter>

<parameter name="test20regex">
<longdesc lang="en">
Regular expression to match in the output of test20url.
Case insensitive.
</longdesc>
<shortdesc lang="en">Level 20 monitor regular expression</shortdesc>
<content type="string" />
</parameter>

<parameter name="test20conffile">
<longdesc lang="en">
A file which contains a more complex test configuration. Could be useful if
you have to check more than one web application or in case sensitive
info should be passed as arguments (passwords). Furthermore,
using a config file is the only way to specify certain parameters.

Please see README.webapps for examples and file description.
</longdesc>
<shortdesc lang="en">Level 20 test configuration file</shortdesc>
<content type="string" />
</parameter>

<parameter name="test20name">
<longdesc lang="en">
Name of the test within the test configuration file.
</longdesc>
<shortdesc lang="en">Level 20 test name</shortdesc>
<content type="string" />
</parameter>

<parameter name="external_monitor30_cmd">
<longdesc lang="en">
Command string to run which implements level 30 monitoring.
</longdesc>
<shortdesc lang="en">Level 30 test string</shortdesc>
<content type="string" />
</parameter>

<parameter name="options">
<longdesc lang="en">
Extra options to apply when starting nginx.
</longdesc>
<shortdesc lang="en">nginx start options</shortdesc>
<content type="string" />
</parameter>

</parameters>

<actions>
<action name="start"   timeout="40s" />
<action name="stop"    timeout="60s" />
<action name="reload"  timeout="40s" />
<action name="status"  timeout="30s" />
<action name="monitor" timeout="30s" depth="0" interval="10s" />
<action name="monitor" timeout="30s" depth="10" interval="30s" />
<action name="monitor" timeout="45s" depth="20" />
<action name="monitor" timeout="60s" depth="30" />
<action name="meta-data"  timeout="5s" />
<action name="validate-all"  timeout="5s" />
</actions>
</resource-agent>
END

  exit $OCF_SUCCESS
}

validate_all_nginx() {
  if
    CheckPort $PORT
    # We are sure to succeed here, since we forced $PORT to be valid in GetParams()
  then
    : OK
  else
    ocf_exit_reason "Port number $PORT is invalid!"
    exit $OCF_ERR_ARGS
  fi

  if
    [ -z $STATUSURL ]
  then
    : OK to be empty
  else
    case $STATUSURL in
      http://*/*) ;;
      *) ocf_exit_reason "Invalid STATUSURL $STATUSURL"
         exit $OCF_ERR_ARGS ;;
    esac
  fi
  if
    [ ! -x $NGINXD ]
  then
    ocf_exit_reason "NGINXD $NGINXD not found or is not an executable!"
    exit $OCF_ERR_ARGS
  fi
  if
    [ ! -f $CONFIGFILE ]
  then
    # We are sure to succeed here, since we have parsed $CONFIGFILE before getting here
    ocf_exit_reason "Configuration file $CONFIGFILE not found!"
    exit $OCF_ERR_CONFIGURED
  fi
  if
    ocf_run $NGINXD $OPTIONS -t -c $CONFIGFILE
  then
    : Cool $NGINXD likes $CONFIGFILE
  else
    ocf_exit_reason "$NGINXD $OPTIONS -t -c $CONFIGFILE reported a configuration error."
    return $OCF_ERR_CONFIGURED
  fi
  return $OCF_SUCCESS
}

if
  [ $# -eq 1 ]
then
  COMMAND=$1
  NGINXD="$OCF_RESKEY_httpd"
  PORT="$OCF_RESKEY_port"
  STATUSURL="$OCF_RESKEY_status10url"
  CONFIGFILE="$OCF_RESKEY_configfile"
  OPTIONS="$OCF_RESKEY_options"
  CLIENT=${OCF_RESKEY_client}
  TESTREGEX="${OCF_RESKEY_status10regex}"
  TESTURL="$OCF_RESKEY_test20url"
  TESTREGEX20=${OCF_RESKEY_test20regex}
  TESTCONFFILE="$OCF_RESKEY_test20conffile"
  TESTNAME="$OCF_RESKEY_test20name"
  EXTMONITOR="$OCF_RESKEY_external_monitor30_cmd"
else
  usage $OCF_ERR_ARGS
fi

LSB_STATUS_STOPPED=3
if
  [ "X$NGINXD" = X -o ! -f "$NGINXD" -o ! -x "$NGINXD" ]
then
  NGINXD=
  for h in $NGINXDLIST
  do
    if
      [ -f "$h" -a -x "$h" ]
    then
      NGINXD="$h"
      break
    fi
  done
# It is possible that we still do not have a valid httpd at this stage
  if
    [ -z "$NGINXD" ]
  then
    case $COMMAND in
	    stop)	exit $OCF_SUCCESS;;
	    monitor)	exit $OCF_NOT_RUNNING;;
            status)	exit $LSB_STATUS_STOPPED;;
  	    meta-data)	metadata_nginx;;
    esac
    ocf_exit_reason "nginx binary not found! Please verify you've installed it"
    exit $OCF_ERR_INSTALLED
  fi
  # Let the user know that the $NGINXD used is the one (s)he specified via $OCF_RESKEY_httpd
  if
    [ ! -z "$OCF_RESKEY_httpd" ]
  then
    ocf_log info "Using $NGINXD as nginx"
  fi
fi

httpd_basename=`basename $NGINXD`
case $httpd_basename in
  *-*)	httpd_basename=`echo "$httpd_basename" | sed -e 's%\-.*%%'`;;
esac
NGINX_CONFIGURATION=`$NGINXD -V 2>&1 |grep 'configure arguments:'`
DEFAULT_CONFIG=`echo "$NGINX_CONFIGURATION" | sed -e 's%.*--conf-path=%%' -e 's% *--.*%%'`

case "$CONFIGFILE" in
  "") CONFIGFILE=$DEFAULT_CONFIG;;
  *)		;;
esac

if
  [ ! -f "$CONFIGFILE" ]
then
  case $COMMAND in
    stop)	ocf_log warn "$CONFIGFILE not found - nginx considered stopped"
    		exit $OCF_SUCCESS;;
    monitor)	exit $OCF_NOT_RUNNING;;
    status)	exit $LSB_STATUS_STOPPED;;
  esac
fi

if
  [ "X$COMMAND" = Xmeta-data ] || GetParams $CONFIGFILE
then
  : OK
else
  ocf_exit_reason "Cannot parse config file [$CONFIGFILE]"
  exit $OCF_ERR_CONFIGURED
fi

case $COMMAND in
  start)	start_nginx;;
  stop)		stop_nginx;;
  reload)	reload_nginx;;
  status)	status_nginx;;
  monitor)	monitor_nginx;;
  meta-data)	metadata_nginx;;
  validate-all)	validate_all_nginx;;
  *)		usage $OCF_ERR_UNIMPLEMENTED;;
esac