Maniphest T191790

Figure out how to migrate an instance from a nova-network region to a neutron region
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	• chasemp
	Apr 9 2018, 1:04 PM

Description

We need to migrate images from our existing cloud to a new neutron based cloud. Some of the lessons in our homegrown cold-migrate script probably apply. This is complicated because the IP will change, the hostname will stay the same, Designate has to be updated, and networking will be fairly different (but not necessarily in a way an instance should care about).

Interesting?

https://docs.openstack.org/mitaka/user-guide/cli_use_snapshots_to_migrate_instances.html
https://ibm-blue-box-help.github.io/help-documentation/nova/migrate-instance/

Details

Subject	Repo	Branch	Lines +/-
region-migrate: migrate web proxies to the new VM	operations/puppet	production	+62 -4
region-migrate: migrate DNS for floating IPs	operations/puppet	production	+48 -16
region-migrate: handle floating IPs	operations/puppet	production	+67 -8
region-migrate: fix network_name for eqiad and codfw	operations/puppet	production	+2 -1
region-migrate: update for eqiad migration	operations/puppet	production	+9 -3
nova region-migrate: update eqiad/eqiad1 settings	operations/puppet	production	+6 -1

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Status	Assigned	Task
Open	None	T53494 Use Beta cluster as a true canary for code deployments (epic)
Open	None	T87220 Minimize infrastructure differences between Beta Cluster and production
Open	None	T196662 Set up LVS in beta like prod
Resolved	bd808	T166396 Program 1 Outcome 4: VPS hosting
Resolved	None	T167293 Nova-network to Neutron migration
Resolved	Andrew	T191790 Figure out how to migrate an instance from a nova-network region to a neutron region
Resolved	Andrew	T191791 Make same glance images available to multiple regions
Resolved	Andrew	T202532 After migrating a VM to eqiad1, transfer DNS to point to the new VM
Resolved	Andrew	T202533 During eqiad1 migration, transfer dynamic proxies to point to the post-migrate VM

Event Timeline

• chasemp triaged this task as Medium priority.Apr 9 2018, 1:04 PM

• chasemp created this task.

bd808 added a project: cloud-services-team (Kanban).Apr 9 2018, 9:26 PM

ayounsi unsubscribed.Apr 9 2018, 9:30 PM

bd808 moved this task from Inbox to Soon! on the cloud-services-team (Kanban) board.Jun 4 2018, 12:00 AM

In some cases, the private IPs of instances have been assumed to be static and placed in things like network rules (grep through mediawiki-config or puppet for 10.68. to find some, but they can also show up in security groups in use within labs).

https://gerrit.wikimedia.org/r/#/c/operations/puppet/+/443109/

Andrew closed subtask T191791: Make same glance images available to multiple regions as Resolved.Jul 2 2018, 9:26 PM

Andrew reopened subtask T191791: Make same glance images available to multiple regions as Open.Aug 14 2018, 4:20 AM

Andrew closed subtask T191791: Make same glance images available to multiple regions as Resolved.Aug 15 2018, 3:01 PM

Change 454703 had a related patch set uploaded (by Andrew Bogott; owner: Andrew Bogott):
[operations/puppet@production] nova region-migrate: update eqiad/eqiad1 settings

https://gerrit.wikimedia.org/r/454703

Change 454703 merged by Andrew Bogott:
[operations/puppet@production] nova region-migrate: update eqiad/eqiad1 settings

https://gerrit.wikimedia.org/r/454703

Change 454825 had a related patch set uploaded (by Andrew Bogott; owner: Andrew Bogott):
[operations/puppet@production] region-migrate: update for eqiad migration

https://gerrit.wikimedia.org/r/454825

Change 454825 merged by Andrew Bogott:
[operations/puppet@production] region-migrate: update for eqiad migration

https://gerrit.wikimedia.org/r/454825

Change 454828 had a related patch set uploaded (by Andrew Bogott; owner: Andrew Bogott):
[operations/puppet@production] region-migrate: fix network_name for eqiad and codfw

https://gerrit.wikimedia.org/r/454828

Change 454828 merged by Andrew Bogott:
[operations/puppet@production] region-migrate: fix network_name for eqiad and codfw

https://gerrit.wikimedia.org/r/454828

Change 455726 had a related patch set uploaded (by Andrew Bogott; owner: Andrew Bogott):
[operations/puppet@production] region-migrate: handle floating IPs

https://gerrit.wikimedia.org/r/455726

Change 455726 merged by Andrew Bogott:
[operations/puppet@production] region-migrate: handle floating IPs

https://gerrit.wikimedia.org/r/455726

Change 455889 had a related patch set uploaded (by Andrew Bogott; owner: Andrew Bogott):
[operations/puppet@production] region-migrate: migrate DNS for floating IPs

https://gerrit.wikimedia.org/r/455889

Change 455889 merged by Andrew Bogott:
[operations/puppet@production] region-migrate: migrate DNS for floating IPs

https://gerrit.wikimedia.org/r/455889

Change 455911 had a related patch set uploaded (by Andrew Bogott; owner: Andrew Bogott):
[operations/puppet@production] region-migrate: migrate web proxies to the new VM

https://gerrit.wikimedia.org/r/455911

Change 455911 merged by Andrew Bogott:
[operations/puppet@production] region-migrate: migrate web proxies to the new VM

https://gerrit.wikimedia.org/r/455911

Andrew closed subtask T202533: During eqiad1 migration, transfer dynamic proxies to point to the post-migrate VM as Resolved.Sep 3 2018, 5:35 PM

Andrew closed subtask T202532: After migrating a VM to eqiad1, transfer DNS to point to the new VM as Resolved.

The 'figure out' parts of this are done now; all that's left is to do it.

Liuxinyu970226 unsubscribed.Sep 14 2018, 11:26 AM