Public bug reported: Check for snat_namespace existence in the node before any operation in the namespace.
Today we check the self.snatnamespace which may or may not reflect the exact state of the system. If the snat_namespace is accidentally deleted and if we try to remove the gateway from the router, the agent throws in a bunch of error messages and the agent goes in loop constantly spewing error messages. Here is the link to the error message. http://paste.openstack.org/show/492700/ This can be easily reproduced. 1. Create a network 2. Create a subnet 3. Create a router ( dvr) 4. Attach the subnet to the router. 5. Configure default gateway to the router. 6. Now verify the namespaces in the 'dvr_snat' node. 7. You should see a. snat_namespace b. router_namespace c. dhcp namespace. 8. Now delete the snat_namespace. 9. Try to remove the gateway from the router. 10. Watch the L3 agent logs ** Affects: neutron Importance: Undecided Status: New ** Tags: l3-dvr-backlog -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1564776 Title: DVR l3 agent should check for snat namespace existence before adding or deleting anything from the namespace Status in neutron: New Bug description: Check for snat_namespace existence in the node before any operation in the namespace. Today we check the self.snatnamespace which may or may not reflect the exact state of the system. If the snat_namespace is accidentally deleted and if we try to remove the gateway from the router, the agent throws in a bunch of error messages and the agent goes in loop constantly spewing error messages. Here is the link to the error message. http://paste.openstack.org/show/492700/ This can be easily reproduced. 1. Create a network 2. Create a subnet 3. Create a router ( dvr) 4. Attach the subnet to the router. 5. Configure default gateway to the router. 6. Now verify the namespaces in the 'dvr_snat' node. 7. You should see a. snat_namespace b. router_namespace c. dhcp namespace. 8. Now delete the snat_namespace. 9. Try to remove the gateway from the router. 10. Watch the L3 agent logs To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1564776/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
