Neutron prevents us to change public_network.cidr on unlock settings

[Alexander Kurenyshev]

Steps to reproduce:
1) Create a cluster
2) Deploy the cluster
3) Change a public network cidr
4) Redeploy the cluster

Expected result:
Redeploy passed

Actual result:
Redeploy failed with error: Deployment has failed. All nodes are finished. Failed tasks: Task[openstack-network-networks/1] Stopping the deployment process!

Snapshot is here https://drive.google.com/file/d/0BzdDsIW-ymG2RU5ERWtZSmFqQk0/view?usp=sharing

[root@nailgun ~]# shotgun2 short-report
cat /etc/fuel_build_id:
 416
cat /etc/fuel_build_number:
 416
cat /etc/fuel_release:
 9.0
cat /etc/fuel_openstack_version:
 mitaka-9.0
rpm -qa | egrep 'fuel|astute|network-checker|nailgun|packetary|shotgun':
 fuel-release-9.0.0-1.mos6347.noarch
 fuel-bootstrap-cli-9.0.0-1.mos284.noarch
 fuel-migrate-9.0.0-1.mos8398.noarch
 rubygem-astute-9.0.0-1.mos746.noarch
 fuel-provisioning-scripts-9.0.0-1.mos8709.noarch
 network-checker-9.0.0-1.mos72.x86_64
 fuel-mirror-9.0.0-1.mos137.noarch
 fuel-openstack-metadata-9.0.0-1.mos8709.noarch
 fuel-notify-9.0.0-1.mos8398.noarch
 nailgun-mcagents-9.0.0-1.mos746.noarch
 python-fuelclient-9.0.0-1.mos316.noarch
 fuelmenu-9.0.0-1.mos270.noarch
 fuel-9.0.0-1.mos6347.noarch
 fuel-utils-9.0.0-1.mos8398.noarch
 fuel-setup-9.0.0-1.mos6347.noarch
 fuel-library9.0-9.0.0-1.mos8398.noarch
 shotgun-9.0.0-1.mos90.noarch
 fuel-agent-9.0.0-1.mos284.noarch
 fuel-ui-9.0.0-1.mos2706.noarch
 fuel-ostf-9.0.0-1.mos934.noarch
 fuel-misc-9.0.0-1.mos8398.noarch
 python-packetary-9.0.0-1.mos137.noarch
 fuel-nailgun-9.0.0-1.mos8709.noarch

[Maksim Malchuk (mmalchuk)]

Lowering to High because this doesn't affect the standard deploy.

[Kyrylo Galanov (kgalanov)]

2016-05-31 15:20:40 +0000 Puppet (err): Property cidr does not support being updated

It is a restriction of puppet-neutron module:
https://github.com/openstack/puppet-neutron/blob/master/lib/puppet/provider/neutron_subnet/neutron.rb#L259-L269

[Kyrylo Galanov (kgalanov)]

2016-05-31 15:20:40 +0000 /Stage[main]/Openstack_tasks::Openstack_network::Networks/Neutron_subnet[admin_floating_net__subnet]
/cidr (err): change from 10.109.30.0/24 to 10.109.30.0/25 failed: Property cidr does not support being updated

[Kyrylo Galanov (kgalanov)]

Hi mos-puppet team,

Could you please provide assistance is resolving an issue? Is it possible to change mentioned network parameters after the first cluster deployment? Perhaps, replacing subnet instead of modifying could help?

Otherwise, forward issue to UI/Doc teams to tackle the problem.

Best regards,
Kyrylo

[Sergey Kolekonov (skolekonov)]

CIDR is a read-only value by design:

root@node-4:/etc/puppet/modules/neutron# neutron subnet-update admin_floating_net__subnet --cidr 172.18.161.0/25
Cannot update read-only attribute cidr

Complete subnet removing/replacing looks like a hack - it will require removal of all related artifacts (floating IPs, router gateways, ports and so on). I think it should be addressed in docs/UI

[Kyrylo Galanov (kgalanov)]

https://bugs.launchpad.net/fuel/+bug/1589342 was created

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: master
Change author: Evgeny Konstantinov <email address hidden>
Review: https://review.fuel-infra.org/22064

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/22064
Submitter: Evgeny Konstantinov <email address hidden>
Branch: master

Commit: 3dcb38b27add47dd83c5d53a89c304cba6378532
Author: Evgeny Konstantinov <email address hidden>
Date: Wed Jun 15 12:40:34 2016

Add CIDR is read-only known issue

Change-Id: I619c2edcf8b5d94622b33a7636732afffc70234e
Closes-Bug:#1587897

[Fuel Devops McRobotson (fuel-devops-robot)]

Related fix proposed to branch: master
Change author: Evgeny Konstantinov <email address hidden>
Review: https://review.fuel-infra.org/22317

[Aleksey Kasatkin (alekseyk-ru)]

I suppose it will be the same issue with Floating range and Public GW. Please comment whether it can be an issue.

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/22317
Submitter: Evgeny Konstantinov <email address hidden>
Branch: master

Commit: 3efec3275f772c0c41c01d2a5013c596463a24fa
Author: Evgeny Konstantinov <email address hidden>
Date: Wed Jun 22 12:58:01 2016

Add Fuel known issues to relnotes 9.0

Change-Id: I9130ecc87d013db29e8a170911e59de0631a0222
Related-Bug: #1587897
Related-Bug: #1450100
Related-Bug: #1490597
Related-Bug: #1466431
Related-Bug: #1419201

[Atsuko Ito (yottatsa)]

CIDR could be updated using PD mechanism, and actually, there is a code to make it updatable.

https://bugs.launchpad.net/neutron/+bug/1605343

[Atsuko Ito (yottatsa)]

https://review.openstack.org/345594 [WIP] Update CIDR for subnet