I have a Devstack (single node) environment on ubuntu 12.04, I am able to access my Horizon, create new instances. nova list command gives proper output. But when I try Ceilometer meter-list command it gives

ceilometerclient.exc.InvalidEndpoint: Error finding address for /v2/meters: [Err no -2] Name or service not known

What can be the cause, How to solve it ?

My Ceilometer.conf

[DEFAULT]
policy_file = /etc/ceilometer/policy.json
debug = True
verbose = True
notification_topics = notifications
rabbit_password = pass
rabbit_hosts = 127.0.0.1
rpc_backend = ceilometer.openstack.common.rpc.impl_kombu

[service_credentials]
os_tenant_name = service
os_password = pass
os_username = ceilometer

[keystone_authtoken]
signing_dir = /var/cache/ceilometer
admin_tenant_name = service
admin_password = pass
admin_user = ceilometer
identity_uri = http://127.0.0.1:35357

[database]
connection = mysql://root:pass@127.0.0.1/ceilometer?charset=utf8

My ~/devstack/local.conf

# Sample ``local.conf`` for user-configurable variables in ``stack.sh``

# NOTE: Copy this file to the root ``devstack`` directory for it to
# work properly.

# ``local.conf`` is a user-maintained setings file that is sourced from ``stackrc``.
# This gives it the ability to override any variables set in ``stackrc``.
# Also, most of the settings in ``stack.sh`` are written to only be set if no
# value has already been set; this lets ``local.conf`` effectively override the
# default values.

# This is a collection of some of the settings we have found to be useful
# in our DevStack development environments. Additional settings are described
# in http://devstack.org/local.conf.html
# These should be considered as samples and are unsupported DevStack code.

# The ``localrc`` section replaces the old ``localrc`` configuration file.
# Note that if ``localrc`` is present it will be used in favor of this section.
[[local|localrc]]
FLOATING_RANGE=192.168.1.224/27
FIXED_RANGE=10.11.12.0/24
FIXED_NETWORK_SIZE=256
FLAT_INTERFACE=eth0
GIT_BASE=${GIT_BASE:-https://git.openstack.org}
#EXTRA_OPTS=(notification_driver=cinder.openstack.common.notifier.rpc_notifier,instance_usage_audit=true,notification_driver=nova.openstack.common.notifier.rabbit_notifier,ceilometer.compute.nova_notifier)

#Enable the ceilometer metering service
enable_service ceilometer-acompute ceilometer-acentral ceilometer-anotification ceilometer-collector

#Enable the ceilometer alarming service
enable_service ceilometer-alarm-evaluator,ceilometer-alarm-notifier

#Enable ceilometer alarming services
enable_service ceilometer-alarm-notifier ceilometer-alarm-evaluator

#Enable the ceilometer api service
enable_service ceilometer-api



# Minimal Contents
# ----------------

# While ``stack.sh`` is happy to run without ``localrc``, devlife is better when
# there are a few minimal variables set:

# If the ``*_PASSWORD`` variables are not set here you will be prompted to enter
# values for them by ``stack.sh`` and they will be added to ``local.conf``.
ADMIN_PASSWORD=pass
MYSQL_PASSWORD=pass
RABBIT_PASSWORD=pass
SERVICE_PASSWORD=$ADMIN_PASSWORD

# ``HOST_IP`` should be set manually for best results if the NIC configuration
# of the host is unusual, i.e. ``eth1`` has the default route but ``eth0`` is the
# public interface.  It is auto-detected in ``stack.sh`` but often is indeterminate
# on later runs due to the IP moving from an Ethernet interface to a bridge on
# the host. Setting it here also makes it available for ``openrc`` to include
# when setting ``OS_AUTH_URL``.
# ``HOST_IP`` is not set by default.

OFFLINE=True
DEST=/opt/stack
# Logging
# -------

# By default ``stack.sh`` output only goes to the terminal ...