Priorityze IPv4 of IPv6

[Andrii Petrenko]

As result of investigation of https://bugs.launchpad.net/fuel/+bug/1613321

Please change default behavior for host IP resolution (gai.conf) for prioritize IPv4 response on IPv6 or Disable IPv6 on fuel master by default.

Cause of problem: Fuel master does not support IPv6 in full size. As result we have a problem in case of trying build bootstrap image and host resolved to IPv6.

From diagnostic snapshots:
http://mirror.fuel-infra.org/mos-repos/centos/mos8.0-centos7-fuel/updates/x86_64/repodata/repomd.xml: [Errno 14] curl#7 - "Failed to connect to 2a03:1840:2:602::3: Network is unreachable"
Trying other mirror.
{"failed_urls": ["http://mirror.fuel-infra.org/mos-repos/centos/mos8.0-centos7-fuel/updates/x86_64/"]}
2016-06-17 19:17:32 ERROR (app) {"failed_urls": ["http://mirror.fuel-infra.org/mos-repos/centos/mos8.0-centos7-fuel/updates/x86_64/"]}
{"failed_urls": ["http://mirror.fuel-infra.org/mos-repos/centos/mos8.0-centos7-fuel/updates/x86_64/"]}

How to disable IPv6 on centos: https://wiki.centos.org/FAQ/CentOS7#head-8984faf811faccca74c7bcdd74de7467f2fcd8ee

Prefer IPv4 over IPv6: https://community.rackspace.com/products/f/25/t/5110

[Andrii Petrenko (aplsms)]

it would be nice to have the same approach for other nodes: some times we have the same problem (host resolved to IPv6 instead of IPv4) with other services (ntp, rabbitmq).

[Denis Meltsaykin (dmeltsaykin)]

Lowering Importance to High as there is a workaround.

[Ivan Suzdal (isuzdal)]

Why is it assigned to mos-linux team?
I guess it's somewhere around fuel-library.

[Andrii Petrenko (aplsms)]

reassigning to Fuel-team

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/359717

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/359717
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=14daf4287ce4749961be4df9696971f7ce74177a
Submitter: Jenkins
Branch: master

commit 14daf4287ce4749961be4df9696971f7ce74177a
Author: Vladimir Kozhukalov <email address hidden>
Date: Wed Aug 24 12:04:32 2016 +0300

    Disable IPv6 on the master node

    Change-Id: I7224c82c1addee027bb87ece958bcb7042b11dda
    Closes-Bug: #1614146

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/360260

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/360260
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=53db5b4175e079b7f78d820387e6ab425d45c17c
Submitter: Jenkins
Branch: stable/mitaka

commit 53db5b4175e079b7f78d820387e6ab425d45c17c
Author: Vladimir Kozhukalov <email address hidden>
Date: Wed Aug 24 12:04:32 2016 +0300

    Disable IPv6 on the master node

    Change-Id: I7224c82c1addee027bb87ece958bcb7042b11dda
    Closes-Bug: #1614146
    (cherry picked from commit 14daf4287ce4749961be4df9696971f7ce74177a)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/8.0
Review: https://review.openstack.org/361916

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/7.0
Review: https://review.openstack.org/361923

[Alexey Stupnikov (astupnikov)]

It is impossible to deliver those fixes to MOS7 and MOS8 master nodes, since affected puppet manifests are delivered inside fuel-library package on ISO and we will not release new ISO.

[Alexey Stupnikov (astupnikov)]

Closing this bug as invalid for MOS7 and MOS8 since master nodes are always selecting IPv4 connection over unconfigured IPv6. If I am wrong here, please feel free to correct.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Alexey Stupnikov (<email address hidden>) on branch: stable/7.0
Review: https://review.openstack.org/361923
Reason: No way to deliver to customer.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Alexey Stupnikov (<email address hidden>) on branch: stable/8.0
Review: https://review.openstack.org/361916
Reason: No way to deliver.

[Maksim Malchuk (mmalchuk)]

Alexey, the workaround exists for the issue: https://wiki.centos.org/FAQ/CentOS7#head-8984faf811faccca74c7bcdd74de7467f2fcd8ee
Please provide this information for the customer.

[Maksym Strukov (unbelll)]

Verified as fixed in 9.1 #315

[Maksym Strukov (unbelll)]

Verified as fixed in Fuel 10-791

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/fuel-library 10.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/fuel-library 10.0.0 release.