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ERROR nova.rpc.common [-] Timed out waiting for RPC response: timed out

asked 2012-05-21 09:08:09 -0500

linyouqing7 gravatar image

I use two Nodes to install openstack one node (name Cloud)install all in one included nova-compute and another node (name Node1) only install nova-compute I launch instances on horizon web page:

demo cloud winxp 10.0.0.4 512MB RAM | 1 VCPU | 0 Disk Active None demo Node1 tty1 512MB RAM | 1 VCPU | 0 Disk Error Networking No State

the instance launched on cloud Node run successfully, but instance lanched on Node1 then meets some errors.

error log of nova-network.log at Cloud node see details http://pastebin.com/ytwVjW2F

error log of nova-compute.log at Node1 see details http://pastebin.com/8NLkyvMt

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answered 2012-05-22 10:50:51 -0500

mandarvaze gravatar image

From the logs it looks like nova-compute sent an RPC request to nova-network, which did not complete. So rpc.timeout on nova-compute logs makes sense.

But why nova-network itself has RPC.timeout error is unclear from nova-network logs. Do you see any other errors in nova-network log ?

Which network manager are you using ? (May not be directly relevant to the error from logs .. but may be useful)

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answered 2012-05-23 03:41:34 -0500

linyouqing7 gravatar image

my Controller Node have tow NICS use FlatDHCPManager for nova-network.

NETWORK

network_manager=nova.network.manager.FlatDHCPManager force_dhcp_release=True dhcpbridge_flagfile=/etc/nova/nova.conf firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver my_ip=PUBLIC_IP public_interface=eth1 vlan_interface=eth0 flat_network_bridge=br100 flat_interface=eth0 fixed_range=10.0.0.0/24 multi_host=True send_arp_for_ha=True

after recently test I found , where I delete fixed_ip

nova-manage network delete 10.0.0.0/24

then instanc launch at Node1 successfully. Tenant Host Instance Name IP Address Size Status Task Power State Actions demo Node1 winxp-Node1 512MB RAM | 1 VCPU | 0 Disk Active None Running though it hvae get fixed_ip

so when I allcote fixed ip at Control Node which run nova-network

nova-manage network create private --fixed_range_v4=10.0.0.0/24 --num_networks=1 --bridge=br100 --bridge_interface=eth0 --network_size=256 --multi_host=T

then create a new instance meets following problems:

Tenant  Host    Instance Name   IP Address  Size    Status  Task    Power State Actions
demo    Node1   winxp-Node1                       512MB RAM | 1 VCPU | 0 Disk   Error   Networking  No State    
demo    cloud   winxp-cloud        10.0.0.2        512MB RAM | 1 VCPU | 0 Disk  Active  None    Running

please see details of log

nova-network.log on Controll Node http://pastebin.com/8HBULmLP

nova-compute.log on Node1 http://pastebin.com/Ksh05duC

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answered 2012-06-06 22:38:44 -0500

I had a similar problem.

In my case (which I believe is exactly the samesituation here) , it was due to the fact that because of some unclear misconfiguration, nova-network did not start the dnsmasq daemon beside it is configured using a FlatDHCP manager.

So the timeout comes from the nova-network daemon waiting for an answer from a dnsmasq that nobody started.

Of course, as usual with OpenStack, there absolutely no meaningful error message anywhere...

About the misconfiguration it might be due to the fact I created a multi-host network at first (following one of the examples in the documentation). I'm not sute I have changed anything else. But now, nova-network do start dnsmasq, and at last, I can boot an image.

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answered 2012-11-08 17:47:22 -0500

javsalgar gravatar image

douardda (david-douard), how did you manage to make dnsmasq work? I have the same problem, I can only start instances without networking (not even in the main node). Did you have to install anything else?

Thank you,

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Asked: 2012-05-21 09:08:09 -0500

Seen: 424 times

Last updated: Nov 08 '12