l3 iptables floating IP rules don't match iptables rules

Bug #1566007 reported by Kevin Benton
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
neutron
Fix Released
Medium
Brian Haley

Bug Description

The floating IP translation rules generated by the l3 agent do not match the format in which they are returned by iptables. This causes the iptables diffing code to think they are different and replace every one of them on an iptables apply call, which is very expensive.

See https://gist.github.com/busterswt/479e4e5484df7e91017da48b38fa5814 for an example diff.

Changed in neutron:
assignee: nobody → Kevin Benton (kevinbenton)
Changed in neutron:
status: New → In Progress
Changed in neutron:
assignee: Kevin Benton (kevinbenton) → Brian Haley (brian-haley)
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (master)

Reviewed: https://review.openstack.org/301335
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=b8d520ffe2afbffe26b554bff55165531e36e758
Submitter: Jenkins
Branch: master

commit b8d520ffe2afbffe26b554bff55165531e36e758
Author: Kevin Benton <email address hidden>
Date: Fri Apr 1 02:42:54 2016 -0700

    L3 agent: match format used by iptables

    This fixes the iptables rules generated by the L3 agent
    (SNAT, DNAT, set-mark and metadata), and the DHCP agent
    (checksum-fill) to match the format that will be returned
    by iptables-save to prevent excessive extra replacement
    work done by the iptables manager.

    It also fixes the iptables test that was not passing the
    expected arguments (-p PROTO -m PROTO) for block rules.

    A simple test was added to the L3 agent to ensure that the
    rules have converged during the normal lifecycle tests.

    Closes-Bug: #1566007
    Change-Id: I5e8e27cdbf0d0448011881614671efe53bb1b6a1

Changed in neutron:
status: In Progress → Fix Released
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (stable/mitaka)

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/302121

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (stable/liberty)

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/302388

Changed in neutron:
importance: Undecided → Medium
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (stable/mitaka)

Reviewed: https://review.openstack.org/302121
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=33d3b8ce76d942950e2f999a6040787483adf729
Submitter: Jenkins
Branch: stable/mitaka

commit 33d3b8ce76d942950e2f999a6040787483adf729
Author: Kevin Benton <email address hidden>
Date: Fri Apr 1 02:42:54 2016 -0700

    L3 agent: match format used by iptables

    This fixes the iptables rules generated by the L3 agent
    (SNAT, DNAT, set-mark and metadata), and the DHCP agent
    (checksum-fill) to match the format that will be returned
    by iptables-save to prevent excessive extra replacement
    work done by the iptables manager.

    It also fixes the iptables test that was not passing the
    expected arguments (-p PROTO -m PROTO) for block rules.

    A simple test was added to the L3 agent to ensure that the
    rules have converged during the normal lifecycle tests.

    Closes-Bug: #1566007
    Change-Id: I5e8e27cdbf0d0448011881614671efe53bb1b6a1
    (cherry picked from commit b8d520ffe2afbffe26b554bff55165531e36e758)

tags: added: in-stable-mitaka
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (stable/liberty)

Reviewed: https://review.openstack.org/302388
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=a43b11e0aa8abc9e42c7c1186757d68392a5d89f
Submitter: Jenkins
Branch: stable/liberty

commit a43b11e0aa8abc9e42c7c1186757d68392a5d89f
Author: Kevin Benton <email address hidden>
Date: Fri Apr 1 02:42:54 2016 -0700

    L3 agent: match format used by iptables

    This fixes the iptables rules generated by the L3 agent
    (SNAT, DNAT, set-mark and metadata), and the DHCP agent
    (checksum-fill) to match the format that will be returned
    by iptables-save to prevent excessive extra replacement
    work done by the iptables manager.

    It also fixes the iptables test that was not passing the
    expected arguments (-p PROTO -m PROTO) for block rules.

    A simple test was added to the L3 agent to ensure that the
    rules have converged during the normal lifecycle tests.

    Closes-Bug: #1566007
    Change-Id: I5e8e27cdbf0d0448011881614671efe53bb1b6a1
    (cherry picked from commit b8d520ffe2afbffe26b554bff55165531e36e758)

tags: added: in-stable-liberty
Revision history for this message
Doug Hellmann (doug-hellmann) wrote : Fix included in openstack/neutron 8.1.0

This issue was fixed in the openstack/neutron 8.1.0 release.

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (master)

Fix proposed to branch: master
Review: https://review.openstack.org/314250

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (master)
Download full text (36.9 KiB)

Reviewed: https://review.openstack.org/314250
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=3bf73801df169de40d365e6240e045266392ca63
Submitter: Jenkins
Branch: master

commit a323769143001d67fd1b3b4ba294e59accd09e0e
Author: Ryan Moats <email address hidden>
Date: Tue Oct 20 15:51:37 2015 +0000

    Revert "Improve performance of ensure_namespace"

    This reverts commit 81823e86328e62850a89aef9f0b609bfc0a6dacd.

    Unneeded optimization: this commit only improves execution
    time on the order of milliseconds, which is less than 1% of
    the total router update execution time at the network node.

    This also

    Closes-bug: #1574881

    Change-Id: Icbcdf4725ba7d2e743bb6761c9799ae436bd953b

commit 7fcf0253246832300f13b0aa4cea397215700572
Author: OpenStack Proposal Bot <email address hidden>
Date: Thu Apr 21 07:05:16 2016 +0000

    Imported Translations from Zanata

    For more information about this automatic import see:
    https://wiki.openstack.org/wiki/Translations/Infrastructure

    Change-Id: I9e930750dde85a9beb0b6f85eeea8a0962d3e020

commit 643b4431606421b09d05eb0ccde130adbf88df64
Author: OpenStack Proposal Bot <email address hidden>
Date: Tue Apr 19 06:52:48 2016 +0000

    Imported Translations from Zanata

    For more information about this automatic import see:
    https://wiki.openstack.org/wiki/Translations/Infrastructure

    Change-Id: I52d7460b3265b5460b9089e1cc58624640dc7230

commit 1ffea42ccdc14b7a6162c1895bd8f2aae48d5dae
Author: OpenStack Proposal Bot <email address hidden>
Date: Mon Apr 18 15:03:30 2016 +0000

    Updated from global requirements

    Change-Id: Icb27945b3f222af1d9ab2b62bf2169d82b6ae26c

commit b970ed5bdac60c0fa227f2fddaa9b842ba4f51a7
Author: Kevin Benton <email address hidden>
Date: Fri Apr 8 17:52:14 2016 -0700

    Clear DVR MAC on last agent deletion from host

    Once all agents are deleted from a host, the DVR MAC generated
    for that host should be deleted as well to prevent a buildup of
    pointless flows generated in the OVS agent for hosts that don't
    exist.

    Closes-Bug: #1568206
    Change-Id: I51e736aa0431980a595ecf810f148ca62d990d20
    (cherry picked from commit 92527c2de2afaf4862fddc101143e4d02858924d)

commit eee9e58ed258a48c69effef121f55fdaa5b68bd6
Author: Mike Bayer <email address hidden>
Date: Tue Feb 9 13:10:57 2016 -0500

    Add an option for WSGI pool size

    Neutron currently hardcodes the number of
    greenlets used to process requests in a process to 1000.
    As detailed in
    http://lists.openstack.org/pipermail/openstack-dev/2015-December/082717.html

    this can cause requests to wait within one process
    for available database connection while other processes
    remain available.

    By adding a wsgi_default_pool_size option functionally
    identical to that of Nova, we can lower the number of
    greenlets per process to be more in line with a typical
    max database connection pool size.

    DocImpact: a previously unused configuration value
               wsgi_default_pool_size is now used to a...

tags: added: neutron-proactive-backport-potential
Revision history for this message
Thierry Carrez (ttx) wrote : Fix included in openstack/neutron 7.1.0

This issue was fixed in the openstack/neutron 7.1.0 release.

Revision history for this message
Doug Hellmann (doug-hellmann) wrote : Fix included in openstack/neutron 9.0.0.0b1

This issue was fixed in the openstack/neutron 9.0.0.0b1 development milestone.

tags: removed: neutron-proactive-backport-potential
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