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<div class="moz-cite-prefix">I don't know there exists a such
command. But these values will be printed during nova-computer
starting.<br>
I think nova-compute is using db to report its existence, and
using MQ to reports its capabilities to nova-scheduler<br>
<br>
On 11/16/2012 06:47 AM, Ahmed Al-Mehdi wrote:<br>
</div>
<blockquote cite="mid:CCCAB005.4858%25ahmed@coraid.com" type="cite">
<div>Thank you for your help. Actually, I just restarted the
service ( service nova-compute restart ), I am not seeing the
error anymore.</div>
<div><br>
</div>
<div>Do you know if there is a command to get a list of the
current config values in nova?</div>
<div><br>
</div>
<div>Does "nova-compute" running on the compute node "register"
itself with the control node (using the rabbitmq-server)? If
so, is that how the control node knows of all the compute node
that it can talk to?</div>
<div><br>
</div>
<div>Thank you,</div>
<div>Ahmed.</div>
<div><br>
</div>
<div><br>
</div>
<span id="OLK_SRC_BODY_SECTION">
<div style="font-family:Calibri; font-size:11pt;
text-align:left; color:black; BORDER-BOTTOM: medium none;
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0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;
BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span
style="font-weight:bold">From: </span> gong yong sheng <<a
moz-do-not-send="true"
href="mailto:gongysh@linux.vnet.ibm.com">gongysh@linux.vnet.ibm.com</a>><br>
<span style="font-weight:bold">Date: </span> Thursday,
November 15, 2012 3:39 PM<br>
<span style="font-weight:bold">To: </span> Ahmed Al-Mehdi
<<a moz-do-not-send="true" href="mailto:ahmed@coraid.com">ahmed@coraid.com</a>><br>
<span style="font-weight:bold">Cc: </span> "<a
moz-do-not-send="true"
href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>"
<<a moz-do-not-send="true"
href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>><br>
<span style="font-weight:bold">Subject: </span> Re:
[Openstack] Compute node not able to connect to AMQP server
(trying to connect to localhost)<br>
</div>
<div><br>
</div>
<blockquote id="MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"
style="BORDER-LEFT: #b5c4df 5 solid; PADDING:0 0 0 5; MARGIN:0
0 0 5;">
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<div class="moz-cite-prefix">Trye to start your
nova-compute with --config-file {your nova.conf}. and
look at the log at the beginning to see what options
values are used truly.<br>
On 11/16/2012 06:17 AM, Ahmed Al-Mehdi wrote:<br>
</div>
<blockquote cite="mid:CCCAA9F1.4852%25ahmed@coraid.com"
type="cite">
<div>Hello,</div>
<div><br>
</div>
<div>On the compute node (IP addr : 10.176.20.4) I am
seeing the following error message in
/var/log/nova/nova-compute.log:</div>
<div><br>
</div>
<div>
<div>2012-11-15 14:11:12 INFO
nova.openstack.common.rpc.common [-] <b>Reconnecting
to AMQP server on localhost:5672</b></div>
<div>2012-11-15 14:11:12 ERROR
nova.openstack.common.rpc.common [-] AMQP server on
localhost:5672 is unreachable: [Errno 111]
ECONNREFUSED. Trying again in 30 seconds.</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common Traceback (most
recent call last):</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/impl_kombu.py",
line 469, in reconnect</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common self._connect()</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/impl_kombu.py",
line 446, in _connect</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common
self.connection.connect()</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/kombu/connection.py",
line 154, in connect</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common return
self.connection</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/kombu/connection.py",
line 560, in connection</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common
self._connection = self._establish_connection()</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/kombu/connection.py",
line 521, in _establish_connection</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common conn =
self.transport.establish_connection()</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py",
line 255, in establish_connection</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common
connect_timeout=conninfo.connect_timeout)</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py",
line 52, in __init__</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common
super(Connection, self).__init__(*args, **kwargs)</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/amqplib/client_0_8/connection.py",
line 129, in __init__</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common self.transport
= create_transport(host, connect_timeout, ssl)</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/amqplib/client_0_8/transport.py",
line 281, in create_transport</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common return
TCPTransport(host, connect_timeout)</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common File
"/usr/lib/python2.7/dist-packages/amqplib/client_0_8/transport.py",
line 85, in __init__</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common raise
socket.error, msg</div>
<div>2012-11-15 14:11:12 TRACE
nova.openstack.common.rpc.common error: [Errno 111]
ECONNREFUSED</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>The rabbitmq server is running on the controller
node (10.176.20.158), which is reachable from the
compute node. Can someone please help me understand
why the compute node is trying to connect to AMQP
server on localhost.</div>
<div><br>
</div>
<div>nova.conf file is below:</div>
<div><br>
</div>
<div>
<div>[DEFAULT]</div>
<div># LOGS/STATE</div>
<div>verbose=True</div>
<div>logdir=/var/log/nova</div>
<div>state_path=/var/lib/nova</div>
<div>lock_path=/var/lock/nova</div>
<div>rootwrap_config=/etc/nova/rootwrap.conf</div>
<div><br>
</div>
<div># AUTHENTICATION</div>
<div>auth_strategy=keystone</div>
<div># [keystone_authtoken]</div>
<div>auth_host = 127.0.0.1</div>
<div>auth_port = 35357</div>
<div>auth_protocol = http</div>
<div>admin_tenant_name = service</div>
<div>admin_user = nova</div>
<div>admin_password = nova</div>
<div>signing_dirname = /tmp/keystone-signing-nova</div>
<div><br>
</div>
<div># SCHEDULER</div>
<div>compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler</div>
<div><br>
</div>
<div># Cinder - VOLUMES</div>
<div>#volume_driver=nova.volume.driver.ISCSIDriver</div>
<div>#volume_group=nova-volumes</div>
<div>#volume_name_template=volume-%08x</div>
<div>#iscsi_helper=tgtadm</div>
<div>volume_api_class=nova.volume.cinder.API</div>
<div><br>
</div>
<div># DATABASE</div>
<div><a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:sql_connection=mysql://nova:novadbsecret@10.176.20.158/nova">sql_connection=mysql://nova:novadbsecret@10.176.20.158/nova</a></div>
<div><br>
</div>
<div># COMPUTE</div>
<div>libvirt_type=kvm</div>
<div>compute_driver=libvirt.LibvirtDriver</div>
<div>instance_name_template=instance-%08x</div>
<div>api_paste_config=/etc/nova/api-paste.ini</div>
<div><br>
</div>
<div># COMPUTE/APIS: if you have separate configs for
separate services</div>
<div># this flag is required for both nova-api and
nova-compute</div>
<div>allow_resize_to_same_host=True</div>
<div><br>
</div>
<div># APIS</div>
<div>enabled_apis=ec2,osapi_compute,metadata </div>
<div>osapi_compute_extension=nova.api.openstack.compute.contrib.standard_extensions</div>
<div>ec2_dmz_host=10.176.20.158</div>
<div>s3_host=10.176.20.158</div>
<div><br>
</div>
<div># RABBITMQ</div>
<div>rabbit_host=10.176.20.158</div>
<div><br>
</div>
<div># GLANCE</div>
<div>image_service=nova.image.glance.GlanceImageService</div>
<div>glance_api_servers=10.176.20.158:9292</div>
<div><br>
</div>
</div>
<div>
<div># NETWORK</div>
<div>network_manager=nova.network.manager.FlatDHCPManager</div>
<div>force_dhcp_release=True</div>
<div>dhcpbridge_flagfile=/etc/nova/nova.conf</div>
<div>firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver</div>
<div># Change my_ip to match each host</div>
<div>my_ip=10.176.20.4</div>
<div>public_interface=eth0</div>
<div>flat_interface=eth1</div>
<div>flat_network_bridge=br100</div>
<div>fixed_range=192.168.100.0/24</div>
<div><br>
</div>
<div># NOVNC CONSOLE</div>
<div>novncproxy_base_url=<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://10.176.20.158:6080/vnc_auto.html">http://10.176.20.158:6080/vnc_auto.html</a></div>
<div># Change vncserver_proxyclient_address and
vncserver_listen to match each compute host</div>
<div>vncserver_proxyclient_address=10.176.20.4</div>
<div>vncserver_listen=10.176.20.4</div>
<div><br>
</div>
<div><br>
</div>
<div># Following config kept from initial conf file
installed by nova</div>
<div>dhcpbridge=/usr/bin/nova-dhcpbridge</div>
<div>libvirt_use_virtio_for_bridges=True</div>
<div>connection_type=libvirt</div>
<div>root_helper=sudo nova-rootwrap
/etc/nova/rootwrap.conf</div>
<div>ec2_private_dns_show_ip=True</div>
<div>volumes_path=/var/lib/nova/volumes</div>
</div>
<div><br>
</div>
<div>Thank you,</div>
<div>Ahmed.</div>
<br>
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