[Postgres-xc-general] GTM Proxy can't start

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I installed pgxc 1.2.1 and I wanted to start gtm and gtm_proxy on the same sever, but gtm_proxy didn't work.
I did it as such:sudo sumkdir /usr/local/pgsql/data_gtmmkdir /usr/local/pgsql/data_gtm_proxychown l /usr/local/pgsql/data_gtmchown l /usr/local/pgsql/data_gtm_proxysu linitgtm -Z gtm -D /usr/local/pgsql/data_gtminitgtm -Z gtm_proxy -D /usr/local/pgsql/data_gtm_proxygtm -D /usr/local/pgsql/data_gtm &gtm_proxy -D /usr/local/pgsql/data_gtm_proxy
On the last step,it returns CST -FATAL:  can not connect to GTMLOCATION:  ConnectGTM, proxy_main.c:3344.I followed it in the gtm_proxy,I found errorno 111 which means Connection refused infunction connectFailureMessagein GTMPQconnectPollin connectGTMStartin PQconnectGTMStartin PQconnectGTMin ConnectGTMin RegisterProxyin BaseInit in main.
My os is ubuntu 12.04 amd64 and I also tested it on centos 6.I also installed pgxc 1.2.1 on both of them. But they all get the same error.I found a mail "http://sourceforge.net/p/postgres-xc/mailman/message/30755193/", we are exactly the same.
I followed and tried each every pages on net, but still can't solve it. Can you please tell me what I can do? Any help here would be really appreciated.
gtm.conf and gtm_proxy.conf come as follow:

gtm.conf:# ----------------------# GTM configuration file# ----------------------## This file must be placed on gtm working directory # specified by -D command line option of gtm or gtm_ctl.  The# configuration file name must be "gtm.conf"### This file consists of lines of the form##  name = value## (The "=" is optional.) Whitespace may be used.   Comments are# introduced with "#" anywhere on a line.  The complete list of# parameter names and allowed values can be found in the# Postgres-XC documentation.## The commented-out settings shown in this file represent the default# values.## Re-commenting a setting is NOT sufficient to revert it to the default# value.## You need to restart the server.
#------------------------------------------------------------------------------# GENERAL PARAMETERS#------------------------------------------------------------------------------nodename = 'one'				# Specifies the node name.					# (changes requires restart)#listen_addresses = '*'			# Listen addresses of this GTM.					# (changes requires restart)port = 6666				# Port number of this GTM.					# (changes requires restart)
#startup = ACT				# Start mode. ACT/STANDBY.
#------------------------------------------------------------------------------# GTM STANDBY PARAMETERS#------------------------------------------------------------------------------#Those parameters are effective when GTM is activated as a standby server#active_host = ''			# Listen address of active GTM.					# (changes requires restart)#active_port =				# Port number of active GTM.					# (changes requires restart)
#---------------------------------------# OTHER OPTIONS#---------------------------------------#keepalives_idle = 0			# Keepalives_idle parameter.#keepalives_interval = 0		# Keepalives_interval parameter.#keepalives_count = 0			# Keepalives_count internal parameter.#log_file = 'gtm.log'			# Log file name#log_min_messages = WARNING		# log_min_messages.  Default WARNING.				  	# Valid value: DEBUG, DEBUG5, DEBUG4, DEBUG3,					# DEBUG2, DEBUG1, INFO, NOTICE, WARNING,					# ERROR, LOG, FATAL, PANIC#synchronous_backup = off	# If backup to standby is synchronous

gtm_proxy.conf:
#-----------------------------# GTM Proxy configuration file#-----------------------------## This file must be placed on gtm working directory # specified by -D command line option of gtm_proxy or gtm_ctl.# The configuration file name must be "gtm_proxy.conf"### This file consists of lines of the form##  name = value## (The "=" is optional.) Whitespace may be used.   Comments are# introduced with "#" anywhere on a line.  The complete list of# parameter names and allowed values can be found in the# Postgres-XC documentation.## The commented-out settings shown in this file represent the default# values.## Re-commenting a setting is NOT sufficient to revert it to the default# value.## You need to restart the server.
#------------------------------------------------------------------------------# GENERAL PARAMETERS#------------------------------------------------------------------------------nodename = 'one'					# Specifies the node name.								# (changes requires restart)#listen_addresses = '*'			# Listen addresses of this GTM.								# (changes requires restart)port = 6666					# Port number of this GTM.								# (changes requires restart)
#------------------------------------------------------------------------------# GTM PROXY PARAMETERS#------------------------------------------------------------------------------#worker_threads = 1				# Number of the worker thread of this								# GTM proxy								# (changes requires restart)
#------------------------------------------------------------------------------# GTM CONNECTION PARAMETERS#------------------------------------------------------------------------------# Those parameters are used to connect to a GTM servergtm_host = 'localhost' 					# Listen address of the active GTM.								# (changes requires restart)gtm_port = 6668 					# Port number of the active GTM.								# (changes requires restart)
#------------------------------------------------------------------------------# Behavior at GTM communication error#------------------------------------------------------------------------------#gtm_connect_retry_interval = 0	# How long (in secs) to wait until the next								# retry to connect to GTM.###------------------------------------------------------------------------------# Other options#------------------------------------------------------------------------------#keepalives_idle = 0			# Keepalives_idle parameter.#keepalives_interval = 0		# Keepalives_interval parameter.#keepalives_count = 0			# Keepalives_count internal parameter.#log_file = 'gtm_proxy.log'		# Log file name#log_min_messages = WARNING		# log_min_messages.  Default WARNING.							  	# Valid value: DEBUG, DEBUG5, DEBUG4, DEBUG3,								# DEBUG2, DEBUG1, INFO, NOTICE, WARNING,								# ERROR, LOG, FATAL, PANIC.

--Ronian