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[Lujin Luo <luo.lujin@xxxxxxxxxxxxxx>]

Public bug reported:

I have three controller nodes and the Neutron servers on these
controllers are set behind Pacemaker and HAProxy to realize
active/active HA using DevStack. MariaDB Galera cluster is used as my
database backend.I am using the latest codes.

I have one external network and one router. If I run $neutron router-
gateway-set at three controllers at the same time, I will end up with
three ports created on the external network. Although, only the latest
created port would be updated as the router's default gateway IP, the
former two ports would remain in both routerports and ports database.

Besides, the former two ports could not be deleted from $ neutron
router-gateway-clear command. They can only be deleted from database by
hand.

How to reproduce:

Step 1: Create an external network
$ neutron net-create ext-net --router:external True

Step 2: Create a subnet on the external network
$ neutron subnet-create --name ext-subnet ext-net 192.168.122.0/24

Step 3: Create a router
$ neutron router-create router-gateway-test

Step 4: Set gateway to the router on three controllers at the same time
On controller1:
$ neutron router-gateway-set router-gateway-test ext-net

On controller2:
$ neutron router-gateway-set router-gateway-test ext-net

On controller3:
$ neutron router-gateway-set router-gateway-test ext-net

The port list on the router after the above commands could be seen here
http://paste.openstack.org/show/484091/

Step 5: Clear the gateway on the router
$ neutron router-gateway-clear router-gateway-test ext-net

The port list on the router after Step 5 could be seen here
http://paste.openstack.org/show/484092/

As we can see, the two ports created earlier were not able to be cleared
through CLI.

Step 6: Try to deletes the rest two router ports
$ neutron port-delete 3095887a-cb2d-46eb-bf56-be6305596868
$ neutron port-delete 76a42eda-33ce-4048-882a-6f8cb4d7137c
where '3095887a-cb2d-46eb-bf56-be6305596868' and '76a42eda-33ce-4048-882a-6f8cb4d7137c' are the two remaining gateway ports on the router
The result is shown here http://paste.openstack.org/show/484094/

The routerports and ports database info could be seen here
http://paste.openstack.org/show/484095/ , where '9a261e95-1f3b-4c8f-
91a6-098b9fab7c25' is the id of the router we created in Step 3.

** Affects: neutron
     Importance: Undecided
     Assignee: Lujin Luo (luo-lujin)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => Lujin Luo (luo-lujin)

** Description changed:

  I have three controller nodes and the Neutron servers on these
  controllers are set behind Pacemaker and HAProxy to realize
  active/active HA using DevStack. MariaDB Galera cluster is used as my
  database backend.I am using the latest codes.
  
  I have one external network and one router. If I run $neutron router-
  gateway-set at three controllers at the same time, I will end up with
  three ports created on the external network. Although, only the latest
  created port would be updated as the router's default gateway IP, the
  former two ports would remain in both routerports and ports database.
  
  Besides, the former two ports could not be deleted from $ neutron
  router-gateway-clear command. They can only be deleted from database by
  hand.
  
  How to reproduce:
  
  Step 1: Create an external network
  $ neutron net-create ext-net --router:external True
  
  Step 2: Create a subnet on the external network
  $ neutron subnet-create --name ext-subnet ext-net 192.168.122.0/24
  
  Step 3: Create a router
  $ neutron router-create router-gateway-test
  
  Step 4: Set gateway to the router on three controllers at the same time
  On controller1:
  $ neutron router-gateway-set router-gateway-test ext-net
  
  On controller2:
  $ neutron router-gateway-set router-gateway-test ext-net
  
  On controller3:
  $ neutron router-gateway-set router-gateway-test ext-net
  
  The port list on the router after the above commands could be seen here
- http://paste.openstack.org/show/483693/
+ http://paste.openstack.org/show/484091/
  
  Step 5: Clear the gateway on the router
  $ neutron router-gateway-clear router-gateway-test ext-net
  
  The port list on the router after Step 5 could be seen here
- http://paste.openstack.org/show/483694/
+ http://paste.openstack.org/show/484092/
  
  As we can see, the two ports created earlier were not able to be cleared
  through CLI.
  
+ Step 6: Try to deletes the rest two router ports
+ $ neutron port-delete 3095887a-cb2d-46eb-bf56-be6305596868
+ $ neutron port-delete 76a42eda-33ce-4048-882a-6f8cb4d7137c
+ where '3095887a-cb2d-46eb-bf56-be6305596868' and '76a42eda-33ce-4048-882a-6f8cb4d7137c' are the two remaining gateway ports on the router
+ The result is shown here http://paste.openstack.org/show/484094/
+ 
  The routerports and ports database info could be seen here
- http://paste.openstack.org/show/483695/ , where '9a261e95-1f3b-4c8f-
+ http://paste.openstack.org/show/484095/ , where '9a261e95-1f3b-4c8f-
  91a6-098b9fab7c25' is the id of the router we created in Step 3.

-- 
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https://bugs.launchpad.net/bugs/1535225

Title:
  Multiple gateway ports are created if multiple API requests update
  same router's gateway at the same time

Status in neutron:
  New

Bug description:
  I have three controller nodes and the Neutron servers on these
  controllers are set behind Pacemaker and HAProxy to realize
  active/active HA using DevStack. MariaDB Galera cluster is used as my
  database backend.I am using the latest codes.

  I have one external network and one router. If I run $neutron router-
  gateway-set at three controllers at the same time, I will end up with
  three ports created on the external network. Although, only the latest
  created port would be updated as the router's default gateway IP, the
  former two ports would remain in both routerports and ports database.

  Besides, the former two ports could not be deleted from $ neutron
  router-gateway-clear command. They can only be deleted from database
  by hand.

  How to reproduce:

  Step 1: Create an external network
  $ neutron net-create ext-net --router:external True

  Step 2: Create a subnet on the external network
  $ neutron subnet-create --name ext-subnet ext-net 192.168.122.0/24

  Step 3: Create a router
  $ neutron router-create router-gateway-test

  Step 4: Set gateway to the router on three controllers at the same time
  On controller1:
  $ neutron router-gateway-set router-gateway-test ext-net

  On controller2:
  $ neutron router-gateway-set router-gateway-test ext-net

  On controller3:
  $ neutron router-gateway-set router-gateway-test ext-net

  The port list on the router after the above commands could be seen
  here http://paste.openstack.org/show/484091/

  Step 5: Clear the gateway on the router
  $ neutron router-gateway-clear router-gateway-test ext-net

  The port list on the router after Step 5 could be seen here
  http://paste.openstack.org/show/484092/

  As we can see, the two ports created earlier were not able to be
  cleared through CLI.

  Step 6: Try to deletes the rest two router ports
  $ neutron port-delete 3095887a-cb2d-46eb-bf56-be6305596868
  $ neutron port-delete 76a42eda-33ce-4048-882a-6f8cb4d7137c
  where '3095887a-cb2d-46eb-bf56-be6305596868' and '76a42eda-33ce-4048-882a-6f8cb4d7137c' are the two remaining gateway ports on the router
  The result is shown here http://paste.openstack.org/show/484094/

  The routerports and ports database info could be seen here
  http://paste.openstack.org/show/484095/ , where '9a261e95-1f3b-4c8f-
  91a6-098b9fab7c25' is the id of the router we created in Step 3.

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