diff --git a/heartbeat/aliyun-vpc-move-ip b/heartbeat/aliyun-vpc-move-ip
index 46e997910..7a4b00682 100755
--- a/heartbeat/aliyun-vpc-move-ip
+++ b/heartbeat/aliyun-vpc-move-ip
@@ -1,344 +1,353 @@
 #!/bin/sh
 #
 # OCF resource agent to move an IP address within a VPC in the Aliyun
 # Based on code of Markus Guertler (GitHub AWS-VPC-move-IP)
 # Based on code of Adam Gandelman (GitHub ec2-resource-agents/elasticip)
 #
 
 #######################################################################
 # Initialization:
 : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
 . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
 
 # Parameter defaults
 
 OCF_RESKEY_address_default=""
 OCF_RESKEY_routing_table_default=""
 OCF_RESKEY_interface_default="eth0"
 OCF_RESKEY_profile_default="default"
 OCF_RESKEY_endpoint_default="vpc.aliyuncs.com"
-OCF_RESKEY_aliyuncli_default="aliyuncli"
+OCF_RESKEY_aliyuncli_default="detect"
 
 
 : ${OCF_RESKEY_address=${OCF_RESKEY_address_default}}
 : ${OCF_RESKEY_routing_table=${OCF_RESKEY_routing_table_default}}
 : ${OCF_RESKEY_interface=${OCF_RESKEY_interface_default}}
 : ${OCF_RESKEY_profile=${OCF_RESKEY_profile_default}}
 : ${OCF_RESKEY_endpoint=${OCF_RESKEY_endpoint_default}}
 : ${OCF_RESKEY_aliyuncli=${OCF_RESKEY_aliyuncli_default}}
 
 #######################################################################
 
 # aliyun cli doesnt work without HOME parameter
 export HOME="/root"
 
 USAGE="usage: $0 {start|stop|status|meta-data}";
 
+if [ "${OCF_RESKEY_aliyuncli}" = "detect" ]; then
+	OCF_RESKEY_aliyuncli="$(which aliyuncli 2> /dev/null || which aliyun 2> /dev/null)"
+fi
+
 if [[ "${OCF_RESKEY_aliyuncli##*/}" == 'aliyuncli' ]]; then
 	OUTPUT="text"
 	EXECUTING='{ print $3 }'
 	IFS_=" "
 	ENDPOINT=""
 elif [[ "${OCF_RESKEY_aliyuncli##*/}" == 'aliyun' ]]; then
 	OUTPUT="table cols=InstanceId,DestinationCidrBlock rows=RouteTables.RouteTable[].RouteEntrys.RouteEntry[]"
 	EXECUTING='{ gsub (" ", "", $0); print $1 }'
 	IFS_="|"
 	ENDPOINT="--endpoint $OCF_RESKEY_endpoint"
 fi
 ###############################################################################
 
 
 ###############################################################################
 #
 # Functions
 #
 ###############################################################################
 
 request_create_route_entry() {
 	cmd="${OCF_RESKEY_aliyuncli} vpc CreateRouteEntry --RouteTableId $OCF_RESKEY_routing_table --DestinationCidrBlock ${OCF_RESKEY_address}/32 --NextHopId $ECS_INSTANCE_ID --NextHopType Instance ${ENDPOINT}"
 	ocf_log debug "executing command: $cmd"
 	$cmd
 }
 
 request_delete_route_entry() {
 	cmd="${OCF_RESKEY_aliyuncli} vpc DeleteRouteEntry --RouteTableId $OCF_RESKEY_routing_table --DestinationCidrBlock ${OCF_RESKEY_address}/32 --NextHopId $ROUTE_TO_INSTANCE ${ENDPOINT}"
 	ocf_log debug "executing command: $cmd"
 	$cmd
 }
 
 request_describe_route_tables() {
 	cmd="${OCF_RESKEY_aliyuncli} vpc DescribeRouteTables --RouteTableId $OCF_RESKEY_routing_table --output ${OUTPUT} ${ENDPOINT}"
 	ocf_log debug "executing command: $cmd"
 	ROUTE_TO_INSTANCE=$($cmd |grep $OCF_RESKEY_address | awk -F "${IFS_}" "${EXECUTING}")
 }
 
 ip_get_and_configure() {
 	ocf_log debug "function: ip_get_and_configure"
 
 	request_describe_route_tables
 	if [ "$ECS_INSTANCE_ID" != "$ROUTE_TO_INSTANCE" ]; then
 		if [ -n "$ROUTE_TO_INSTANCE" ]; then
 			ip_drop
 		fi
 		request_create_route_entry
 		rc=$?
 		while [ $rc -ne 0 ]; do
 			sleep 1
 			request_create_route_entry
 			rc=$?
 		done
 		wait_for_started
 	fi
 
 
 	# Reconfigure the local ip address
 	ip addr add "${OCF_RESKEY_address}/32" dev $OCF_RESKEY_interface
 	rc=$?
 	if [ $rc -ne 0 ]; then
 		ocf_log err "command failed, rc: $rc"
 		return $OCF_ERR_GENERIC
 	fi
 
 	ocf_log debug "IP added"
 
 	return $OCF_SUCCESS
 }
 
 ip_drop() {
 	ocf_log debug "function: ip_drop"
 	cmd="ip addr delete ${OCF_RESKEY_address}/32 dev $OCF_RESKEY_interface"
 	ocf_log debug "executing command: $cmd"
 	$cmd
 	rc=$?
 	if [ $rc -ne 0 ] && [ $rc -ne 2 ]; then
 		ocf_log err "command failed, rc $rc"
 		return $OCF_ERR_GENERIC
 	fi
 	request_delete_route_entry
 	if [ $? -ne 0 ]; then
 		ocf_log err "command failed, rc: $rc"
 		return $OCF_ERR_GENERIC
 	fi
 	wait_for_deleted
 
 	ocf_log debug "IP dropped"
 
 	return $OCF_SUCCESS
 }
 
 wait_for_started() {
 	request_describe_route_tables
 	while [ "$ECS_INSTANCE_ID" != "$ROUTE_TO_INSTANCE" ]; do
 		sleep 3
 		request_describe_route_tables
 	done
 }
 
 wait_for_deleted() {
 	request_describe_route_tables
 	 while [ ! -z "$ROUTE_TO_INSTANCE" ]; do
 		sleep 1
 		request_describe_route_tables
 	 done
 }
 
 ecs_ip_metadata() {
 	cat <<END
 <?xml version="1.0"?>
 <!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
 <resource-agent name="aliyun-vpc-move-ip">
 <version>2.0</version>
 <longdesc lang="en">
 Resource Agent to move IP addresses within a VPC of the Aliyun Webservices ECS
 by changing an entry in an specific routing table
 </longdesc>
 <shortdesc lang="en">Move IP within a VPC of the Aliyun ECS</shortdesc>
 
 <parameters>
 <parameter name="aliyuncli" required="0">
 <longdesc lang="en">
 Path to command line tools for Aliyun
 </longdesc>
 <shortdesc lang="en">Path to Aliyun CLI tools</shortdesc>
 <content type="string" default="${OCF_RESKEY_aliyuncli_default}" />
 </parameter>
 
 <parameter name="address" required="1">
 <longdesc lang="en">
 VPC private IP address
 </longdesc>
 <shortdesc lang="en">vpc ip</shortdesc>
 <content type="string" default="${OCF_RESKEY_address_default}" />
 </parameter>
 
 <parameter name="routing_table" required="1">
 <longdesc lang="en">
 Name of the routing table, where the route for the IP address should be changed, i.e. vtb-...
 </longdesc>
 <shortdesc lang="en">routing table name</shortdesc>
 <content type="string" default="${OCF_RESKEY_routing_table_default}" />
 </parameter>
 
 <parameter name="interface" required="1">
 <longdesc lang="en">
 Name of the network interface, i.e. eth0
 </longdesc>
 <shortdesc lang="en">network interface name</shortdesc>
 <content type="string" default="${OCF_RESKEY_interface_default}" />
 </parameter>
 
 <parameter name="endpoint" required="0">
 <longdesc lang="en">
 An endpoint is the service entry of an Alibaba Cloud service, i.e. vpc.cn-beijing.aliyuncs.com
 </longdesc>
 <shortdesc lang="en">service endpoint</shortdesc>
 <content type="string" default="${OCF_RESKEY_endpoint_default}" />
 </parameter>
 
 <parameter name="profile" required="0">
 <longdesc lang="en">
 Valid Aliyun CLI profile name (see 'aliyun cli configure').
 See https://www.alibabacloud.com/help/zh/product/29991.htm for more information about aliyun cli.
 </longdesc>
 <shortdesc lang="en">profile name</shortdesc>
 <content type="string" default="${OCF_RESKEY_profile_default}" />
 </parameter>
 </parameters>
 
 <actions>
 <action name="start" timeout="180s" />
 <action name="stop" timeout="180s" />
 <action name="monitor" depth="0" timeout="30s" interval="30s" />
 <action name="validate-all" timeout="5s" />
 <action name="meta-data" timeout="5s" />
 </actions>
 </resource-agent>
 END
 }
 
 ecs_ip_validate() {
 	ocf_log debug "function: validate"
 
+	if [ -z "${OCF_RESKEY_aliyuncli}" ]; then
+		ocf_exit_reason "unable to detect aliyuncli binary"
+		exit $OCF_ERR_INSTALLED
+	fi
+
 	# IP address
 	if [ -z "$OCF_RESKEY_address" ]; then
 		ocf_log err "IP address parameter not set $OCF_RESKEY_ADDRESS!"
 		exit $OCF_ERR_CONFIGURED
 	fi
 
 	# Network Interface
 	if [ -z "$OCF_RESKEY_interface" ]; then
 		ocf_log err "Network interface parameter not set $OCF_RESKEY_INTERFACE!"
 		exit $OCF_ERR_CONFIGURED
 	fi
 
 	# Routing Table
 	if [ -z "$OCF_RESKEY_routing_table" ]; then
 		ocf_log err "Routing table parameter not set $OCF_RESKEY_ROUTING_TABLE!"
 		exit $OCF_ERR_CONFIGURED
 	fi
 
 	if [ -z "${ECS_INSTANCE_ID}" ]; then
 		ocf_exit_reason "Instance ID not found. Is this a ECS instance?"
 		return $OCF_ERR_GENERIC
 	fi
 
 	return $OCF_SUCCESS
 }
 
 ecs_ip_start() {
 	ocf_log info "ECS: Moving IP address $OCF_RESKEY_address to this host by adjusting routing table $OCF_RESKEY_routing_table"
 
 	ecs_ip_monitor
 	if [ $? = $OCF_SUCCESS ]; then
 		ocf_log info "ECS: $OCF_RESKEY_address already started"
 		return $OCF_SUCCESS
 	fi
 
 	ocf_log info "ECS: Adjusting routing table and locally configuring IP address"
 	ip_get_and_configure
 	rc=$?
 	if [ $rc -ne 0 ]; then
 		ocf_log err "Received $rc from 'aliyun cli'"
 		return $OCF_ERR_GENERIC
 	fi
 
 	ecs_ip_monitor
 	rc=$?
 	if [ $rc -ne $OCF_SUCCESS ]; then
 		ocf_log err "IP address couldn't be configured on this host (IP: $OCF_RESKEY_address, Interface: $OCF_RESKEY_interface)"
 		return $rc
 	fi
 
 	return $OCF_SUCCESS
 }
 
 ecs_ip_stop() {
 	ocf_log info "ECS: Bringing down IP address $OCF_RESKEY_address"
 
 	ecs_ip_monitor
 	if [ $? = $OCF_NOT_RUNNING ]; then
 		ocf_log info "ECS: Address $OCF_RESKEY_address already down"
 		return $OCF_SUCCESS
 	fi
 
 	ip_drop
 	if [ $? -ne $OCF_SUCCESS ]; then
 		ocf_log err "ECS: Couldn't drop IP address $OCF_RESKEY_address on interface $OCF_RESKEY_interface."
 		return $OCF_ERR_GENERIC
 	fi
 
 	ecs_ip_monitor
 	if [ $? = $OCF_NOT_RUNNING ]; then
 		ocf_log info "ECS: Successfully brought down $OCF_RESKEY_address"
 		return $OCF_SUCCESS
 	fi
 
 	ocf_log err "ECS: Couldn't bring down IP address $OCF_RESKEY_address on interface $OCF_RESKEY_interface."
 	return $OCF_ERR_GENERIC
 }
 
 ecs_ip_monitor() {
 	ocf_log debug "function: ecsip_monitor: check routing table"
 	request_describe_route_tables
 
 	if [ "$ECS_INSTANCE_ID" != "$ROUTE_TO_INSTANCE" ]; then
 		ocf_log debug "not routed to this instance ($ECS_INSTANCE_ID) but to instance $ROUTE_TO_INSTANCE"
 		return $OCF_NOT_RUNNING
 	fi
 
 	cmd="ping -W 1 -c 1 $OCF_RESKEY_address"
 	ocf_log debug "executing command: $cmd"
 	$cmd > /dev/null
 	if [ $? -ne 0 ]; then
 		ocf_log debug "IP $OCF_RESKEY_address not locally reachable via ping on this system"
 		return $OCF_NOT_RUNNING
 	fi
 	ocf_log debug "routed in VPC and locally reachable"
 	return $OCF_SUCCESS
 }
 
 
 ###############################################################################
 #
 # MAIN
 #
 ###############################################################################
 
 case $__OCF_ACTION in
 	meta-data) ecs_ip_metadata
 		   exit $OCF_SUCCESS;;
 	validate-all) ecs_ip_validate;;
 esac
 
 ECS_INSTANCE_ID="$(curl -s http://100.100.100.200/latest/meta-data/instance-id)"
 
 case $__OCF_ACTION in
 	start)
 		ecs_ip_validate
 		ecs_ip_start;;
 	stop)
 		ecs_ip_stop;;
 	monitor)
 		ecs_ip_monitor;;
 	*)	exit $OCF_ERR_UNIMPLEMENTED;;
 esac