Hi, I have a 3 nodes Grizzly setup with one Controller, Network and Compute(KVM) node. I am using VLAN mode. It works fine most of the time. But occasionally when an instance is launched, the instance is unable to reach the external network. When this happens I see that the 'qr-xxxxx' interface is not created as shown below:
root@openstack-dev-network# ip netns exec qrouter-81c474cb-acad-42b4-bc78-875992fa33f6 route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.5.60.1 0.0.0.0 UG 0 0 0 qg-81e2a77d-71 1.1.1.0 0.0.0.0 255.255.252.0 U 0 0 0 qg-81e2a77d-71 root@openstack-dev-network # I see the following error in /var/log/quantum/openvswitch-agent.log Stderr: 'ovs-vsctl: no row "qr-fb582b82-f7" in table Interface\n' 2013-07-29 06:14:18 ERROR [quantum.agent.linux.ovs_lib] Unable to execute ['ovs-vsctl', '--timeout=2', 'get', 'Interface', 'qr-a4f24e08-aa', 'external_ids']. Exception: Command: ['sudo', '/usr/bin/quantum-rootwrap', '/etc/quantum/rootwrap.conf', 'ovs-vsctl', '--timeout=2', 'get', 'Interface', 'qr-a4f24e08-aa', 'external_ids'] Exit code: 1 Stdout: '' Stderr: 'ovs-vsctl: no row "qr-a4f24e08-aa" in table Interface\n' And on restarting the quantum services, the interface gets created and the instance is able to reach the external network. root@openstack-dev-network:~# cd /etc/init.d/; for i in $( ls quantum-* ); do sudo service $i restart; done quantum-dhcp-agent stop/waiting quantum-dhcp-agent start/running, process 20872 quantum-l3-agent stop/waiting quantum-l3-agent start/running, process 20885 quantum-metadata-agent stop/waiting quantum-metadata-agent start/running, process 20894 quantum-plugin-openvswitch-agent stop/waiting quantum-plugin-openvswitch-agent start/running, process 20903 root@openstack-dev-network:/etc/init.d# root@openstack-dev-network# ip netns exec qrouter-81c474cb-acad-42b4-bc78-875992fa33f6 route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.5.60.1 0.0.0.0 UG 0 0 0 qg-81e2a77d-71 1.1.1.0 0.0.0.0 255.255.252.0 U 0 0 0 qg-81e2a77d-71 192.168.3.0 0.0.0.0 255.255.255.0 U 0 0 0 qr-a4f24e08-aa root@openstack-dev-network # I do have the root_helper in /etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini. Any help will be greatly appreciated. Regards, Balu
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