Hi!Everyone! Finally,I finished the installation of openstack in 3nodes(two compute node and one all-in-one node as controller) But,when I reboot system,the controller's nova-compute service（with instance） is error： nova-compute.log： 2012-08-22 19:28:51 INFO nova.rpc.common [req-d38eb14e-
dfd8-4c6a-ae26-fb1e522765eb None None] Connected to AMQP server on 172.18.32.7:5672 2012-08-22 19:29:51 ERROR nova.rpc.common [req-d38eb14e-dfd8-4c6a-ae26-fb1e522765eb None None] Timed out waiting for RPC response: timed out 2012-08-22 19:29:51 TRACE nova.rpc.common Traceback (most recent call last): 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/nova/rpc/impl_kombu.py", line 490, in ensure 2012-08-22 19:29:51 TRACE nova.rpc.common return method(*args, **kwargs) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/nova/rpc/impl_kombu.py", line 567, in _consume 2012-08-22 19:29:51 TRACE nova.rpc.common return self.connection.drain_events(timeout=timeout) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/kombu/connection.py", line 175, in drain_events 2012-08-22 19:29:51 TRACE nova.rpc.common return self.transport.drain_events(self.connection, **kwargs) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py", line 238, in drain_events 2012-08-22 19:29:51 TRACE nova.rpc.common return connection.drain_events(**kwargs) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py", line 57, in drain_events 2012-08-22 19:29:51 TRACE nova.rpc.common return self.wait_multi(self.channels.values(), timeout=timeout) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py", line 63, in wait_multi 2012-08-22 19:29:51 TRACE nova.rpc.common chanmap.keys(), allowed_methods, timeout=timeout) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py", line 120, in _wait_multiple 2012-08-22 19:29:51 TRACE nova.rpc.common channel, method_sig, args, content = read_timeout(timeout) 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/kombu/transport/pyamqplib.py", line 94, in read_timeout 2012-08-22 19:29:51 TRACE nova.rpc.common return self.method_reader.read_method() 2012-08-22 19:29:51 TRACE nova.rpc.common File "/usr/lib/python2.7/dist-packages/amqplib/client_0_8/method_framing.py", line 221, in read_method 2012-08-22 19:29:51 TRACE nova.rpc.common raise m 2012-08-22 19:29:51 TRACE nova.rpc.common timeout: timed out 2012-08-22 19:29:51 TRACE nova.rpc.common 2012-08-22 19:29:52 CRITICAL nova [-] Timeout while waiting on RPC response. Only controller nova-compute service is error，two computenodes is ok. It makes me very puzzled. Is it RabbitMQ close？but，other nodes is ok. so ，I find RabbitMQ log： =INFO REPORT==== 19-Aug-2012::15:51:33 === :$ closing TCP connection <0.240.0> from 172.18.32.7:50592 =WARNING REPORT==== 24-Aug-2012::11:13:16 === exception on TCP connection <0.229.0> from 172.18.32.7:50587 connection_closed_abruptly =INFO REPORT==== 24-Aug-2012::11:13:16 === closing TCP connection <0.229.0> from 172.18.32.7:50587 =WARNING REPORT==== 24-Aug-2012::11:13:16 === exception on TCP connection <0.262.0> from 172.18.32.7:50594 connection_closed_abruptly =INFO REPORT==== 24-Aug-2012::11:13:16 === closing TCP connection <0.262.0> from 172.18.32.7:50594 =WARNING REPORT==== 24-Aug-2012::11:13:16 === exception on TCP connection <0.306.0> from 172.18.32.7:50600 connection_closed_abruptly =INFO REPORT==== 24-Aug-2012::11:13:16 === closing TCP connection <0.306.0> from 172.18.32.7:50600 =WARNING REPORT==== 24-Aug-2012::11:13:16 === exception on TCP connection <0.330.0> from 172.18.32.7:50601 connection_closed_abruptly =INFO REPORT==== 24-Aug-2012::11:13:16 === closing TCP connection <0.330.0> from 172.18.32.7:50601 =WARNING REPORT==== 24-Aug-2012::11:13:16 === exception on TCP connection <0.250.0> from 172.18.32.7:50593 connection_closed_abruptly =INFO REPORT==== 24-Aug-2012::11:13:16 === closing TCP connection <0.250.0> from 172.18.32.7:50593 =INFO REPORT==== 24-Aug-2012::11:14:04 === Limiting to approx 924 file handles (829 sockets) =INFO REPORT==== 24-Aug-2012::11:14:04 === Memory limit set to 1579MB of 3948MB total. =INFO REPORT==== 24-Aug-2012::11:14:04 === msg_store_transient: using rabbit_msg_store_ets_index to provide index =INFO REPORT==== 24-Aug-2012::11:14:04 === msg_store_persistent: using rabbit_msg_store_ets_index to provide index =WARNING REPORT==== 24-Aug-2012::11:14:04 === msg_store_persistent: rebuilding indices from scratch I don‘t find reason. That's my config file： [DEFAULT] ###### LOGS/STATE #verbose=True verbose=False ###### AUTHENTICATION auth_strategy=keystone ###### SCHEDULER #--compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler scheduler_driver=nova.scheduler.simple.SimpleScheduler ###### VOLUMES volume_group=nova-volumes volume_name_template=volume-%08x iscsi_helper=tgtadm iscsi_ip_prefix=172.18.32 ###### DATABASE sql_connection=mysql://nova:*****@172.18.32.7/nova ###### COMPUTE libvirt_type=kvm #libvirt_type=qemu connection_type=libvirt instance_name_template=instance-%08x api_paste_config=/etc/nova/api-paste.ini allow_resize_to_same_host=True libvirt_use_virtio_for_bridges=true start_guests_on_host_boot=true resume_guests_state_on_host_boot=true ###### APIS osapi_compute_extension=nova.api.openstack.compute.contrib.standard_extensions allow_admin_api=true s3_host=172.18.32.7 cc_host=172.18.32.7 ###### RABBITMQ rabbit_host=172.18.32.7 ###### GLANCE image_service=nova.image.glance.GlanceImageService glance_api_servers=172.18.32.7:9292 ###### NETWORK network_manager=nova.network.manager.FlatDHCPManager force_dhcp_release=True dhcpbridge_flagfile=/etc/nova/nova.conf dhcpbridge=/usr/bin/nova-dhcpbridge firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver public_interface=eth0 flat_interface=eth1 flat_network_bridge=br100 fixed_range=172.18.32.160/27 multi_host=true ###### NOVNC CONSOLE novnc_enabled=true novncproxy_base_url= http://172.18.32.7:6080/vnc_auto.html vncserver_proxyclient_address=172.18.32.7 vncserver_listen=172.18.32.7 ########Nova logdir=/var/log/nova state_path=/var/lib/nova lock_path=/var/lock/nova #####MISC use_deprecated_auth=false root_helper=sudo nova-rootwrap when I stop compute node nova-compute service reboot system again，the controller node is ok！ So，I doubt that is RabbitMQ queue problem. then，I add follow lines in nova.conf： rabbit_durable_queues=ture rabbit_max_retries=3 rabbit_retry_backoff=5 rabbit_retry_interval=3 restart nova-compute but then computenode is error why？ Regards, WangPeng
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