| 2015-04-29 17:20:25 |
Kevin Benton |
bug |
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added bug |
| 2015-04-29 17:20:40 |
Kevin Benton |
mos: assignee |
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MOS Neutron (mos-neutron) |
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| 2015-05-08 13:18:40 |
Alexander Ignatov |
summary |
icehouse, juno, and kilo are susceptible to exception loops in the dhcp agent |
[Backport 1447883] Restrict netmask of CIDR to avoid DHCP resync is not enough |
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| 2015-05-08 13:18:45 |
Alexander Ignatov |
mos: milestone |
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6.1 |
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| 2015-05-08 13:18:53 |
Alexander Ignatov |
nominated for series |
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mos/6.1.x |
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| 2015-05-08 13:18:53 |
Alexander Ignatov |
bug task added |
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mos/6.1.x |
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| 2015-05-08 13:18:53 |
Alexander Ignatov |
nominated for series |
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mos/7.0.x |
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| 2015-05-08 13:18:53 |
Alexander Ignatov |
bug task added |
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mos/7.0.x |
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| 2015-05-08 13:19:01 |
Alexander Ignatov |
mos/7.0.x: milestone |
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7.0 |
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| 2015-05-08 13:19:04 |
Alexander Ignatov |
mos/6.1.x: status |
New |
Confirmed |
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| 2015-05-08 13:19:06 |
Alexander Ignatov |
mos/7.0.x: status |
New |
Confirmed |
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| 2015-05-08 13:19:15 |
Alexander Ignatov |
mos/6.1.x: importance |
Undecided |
Critical |
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| 2015-05-08 13:19:17 |
Alexander Ignatov |
mos/7.0.x: importance |
Undecided |
Critical |
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| 2015-05-08 13:19:26 |
Alexander Ignatov |
mos/7.0.x: assignee |
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MOS Neutron (mos-neutron) |
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| 2015-05-08 13:24:56 |
Alexander Ignatov |
description |
There are a couple of ways that a tenant can setup their subnet to cause the DHCP agent to go into a failure loop when it tries to create a port. This creates extra load on the agent that makes its response to other changes slower.
There are two fixes that should be back-ported to all of the mos-neutron branches.
The first has merged so it's ready to be back-ported: https://review.openstack.org/#/c/177187/
The second is still under review, but should be ready in the next couple of days: https://review.openstack.org/#/c/157697/ |
There are a couple of ways that a tenant can setup their subnet to cause the DHCP agent to go into a failure loop when it tries to create a port. This creates extra load on the agent that makes its response to other changes slower.
This is a backport of https://bugs.launchpad.net/neutron/+bug/1447883
Description
===========
Restrict netmask of CIDR to avoid DHCP resync is not enough.
https://bugs.launchpad.net/neutron/+bug/1443798
I'd like to prevent following case:
[Condition]
- Plugin: ML2
- subnet with "enable_dhcp" is True
[Operations]
A. Specify "[]"(empty list) at "allocation_pools" when create/update-subnet
---------------------------------------------------------------------------
$ $ curl -X POST -d '{"subnet": {"name": "test_subnet", "cidr": "192.168.200.0/24", "ip_version": 4, "network_id": "649c5531-338e-42b5-a2d1-4d49140deb02", "allocation_pools": []}}' -H "x-auth-token:$TOKEN" -H "content-type:application/json" http://127.0.0.1:9696/v2.0/subnets
Then, the dhcp-agent creates own DHCP-port, it is reproduced resync bug.
B. Create port and exhaust allocation_pools
---------------------------------------------------------------
1. Create subnet with 192.168.1.0/24. And, DHCP-port has alteady created.
gateway_ip: 192.168.1.1
DHCP-port: 192.168.1.2
allocation_pools{"start": 192.168.1.2, "end": 192.168.1.254}
the number of availability ip_addresses is 252.
2. Create non-dhcp port and exhaust ip_addresses in allocation_pools
In this case, user creates a port 252 times.
the number of availability ip_addresses is 0.
3. User deletes the DHCP-port(192.168.1.2)
the number of availability ip_addresses is 1.
4. User creates a non-dhcp port.
the number of availability ports are 0.
Then, dhcp-agent tries to create DHCP-port. It is reproduced resync bug. |
|
| 2015-05-08 14:57:00 |
Alexander Ignatov |
mos/6.1.x: assignee |
MOS Neutron (mos-neutron) |
Kevin Benton (kevinbenton) |
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| 2015-05-12 01:01:56 |
ruhe |
tags |
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neutron |
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| 2015-05-12 10:35:26 |
Alexander Ignatov |
mos/6.1.x: status |
Confirmed |
In Progress |
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| 2015-05-13 09:57:23 |
Alexander Ignatov |
mos/6.1.x: status |
In Progress |
Fix Committed |
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| 2015-05-19 14:41:03 |
Kristina Berezovskaia |
mos/6.1.x: status |
Fix Committed |
Fix Released |
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| 2015-07-14 09:40:31 |
Alexander Ignatov |
mos/7.0.x: status |
Confirmed |
In Progress |
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| 2015-07-14 09:40:38 |
Alexander Ignatov |
mos/7.0.x: assignee |
MOS Neutron (mos-neutron) |
Alexander Ignatov (aignatov) |
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| 2015-07-15 13:51:02 |
Alexander Ignatov |
mos/7.0.x: status |
In Progress |
Fix Committed |
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| 2015-08-07 09:42:00 |
Anna Babich |
tags |
neutron |
neutron on verification |
|
| 2015-08-25 10:42:20 |
Vitaly Sedelnik |
nominated for series |
|
mos/6.0-updates |
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| 2015-08-25 10:42:20 |
Vitaly Sedelnik |
bug task added |
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mos/6.0-updates |
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| 2015-08-25 10:42:30 |
Vitaly Sedelnik |
mos/6.0-updates: importance |
Undecided |
Critical |
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| 2015-08-25 10:42:48 |
Vitaly Sedelnik |
mos/6.0-updates: milestone |
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6.0-mu-6 |
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| 2015-08-25 10:42:57 |
Vitaly Sedelnik |
mos/6.0-updates: assignee |
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MOS Maintenance (mos-maintenance) |
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| 2015-08-25 15:14:29 |
Vitaly Sedelnik |
mos/6.0-updates: status |
New |
Confirmed |
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| 2015-08-26 11:24:14 |
Vitaly Sedelnik |
mos/6.0-updates: assignee |
MOS Maintenance (mos-maintenance) |
Denis Meltsaykin (dmeltsaykin) |
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| 2015-08-27 16:46:36 |
Denis Meltsaykin |
mos/6.0-updates: status |
Confirmed |
In Progress |
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| 2015-08-28 14:38:48 |
Denis Meltsaykin |
mos/6.0-updates: status |
In Progress |
Fix Committed |
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| 2015-09-01 09:51:47 |
Anna Babich |
mos/7.0.x: status |
Fix Committed |
Fix Released |
|
| 2015-09-01 09:51:57 |
Anna Babich |
tags |
neutron on verification |
neutron |
|
| 2015-09-09 15:28:00 |
Olena Logvinova |
tags |
neutron |
6.0 neutron release-notes-done |
|
| 2015-09-26 13:38:34 |
Vitaly Sedelnik |
nominated for series |
|
mos/6.0.x |
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| 2015-09-26 13:38:34 |
Vitaly Sedelnik |
bug task added |
|
mos/6.0.x |
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| 2015-09-26 13:38:41 |
Vitaly Sedelnik |
mos/6.0.x: status |
New |
Fix Committed |
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| 2015-09-26 13:38:43 |
Vitaly Sedelnik |
mos/6.0.x: importance |
Undecided |
Critical |
|
| 2015-09-26 13:38:50 |
Vitaly Sedelnik |
mos/6.0.x: assignee |
|
Denis Meltsaykin (dmeltsaykin) |
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| 2015-09-26 13:38:53 |
Vitaly Sedelnik |
mos/6.0.x: milestone |
|
6.0-mu-6 |
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| 2015-09-30 20:35:15 |
Vitaly Sedelnik |
mos/6.0.x: status |
Fix Committed |
Fix Released |
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