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Wikimedia Cloud Services team/EnhancementProposals/Neutron SDN/phases

From Wikitech
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There are three running narratives through this work:

  • Moving to OpenStack Mitaka
  • Moving to Debian [Jessie|Stretch]
  • Moving to OpenStack Neutron topology


Mitaka https://phabricator.wikimedia.org/T187954

Neutron https://phabricator.wikimedia.org/T167293

Debian OpenStack packaging: https://phabricator.wikimedia.org/T169099

Trusty EOL: https://phabricator.wikimedia.org/T186029


Deployment Shared components [Per Site]

  • Horizon (Natively shared across regions)
  • Keystone (Natively shared across regions)
  • LDAP
  • Puppet
  • Designate, pdns, pdns-recursor
  • Glance (Need to find some way to share images even if OOB syncing)

Deployment Separate Components

  • nova-api
  • neutron-server/nova-network
  • neutron-l3-agent
  • neutron-ml2-agent
  • metadata api (and proxy)
  • nova-conductor
  • nova-scheduler


Phase 0

This is all about setting up to have actual Mitaka/Jessie/Neutron infrastructure that is ready for us to run real/test workloads and should end with us ready to implement canaries and figure out moving instances between regions.

[x] Plan VLANs and IP allocations

[x] Create VLANs in Codfw for Neutron

[x] Build out a labtestn Neutron environment on Mitaka and Jessie

[x] Replace missing NAT functionality in native neutron-l3-agent

[x] Migrate labtest to Mitaka

[x] Migrate Main to Mitaka

Phase 1

This is all about setting up eqiad1 for Neutron, writing the logic to moving instances between regions, and having early workloads on Neutron in eqiad1.

[x] Sprinkle in Jessie/Mitaka labvirts to Main for early IRL testing

[x] Make same glance images available to multiple regions https://phabricator.wikimedia.org/T191791

[X] Figure out how to collapse Keystones for labtest/labtestn

[x] integrate any missing config from labtest components into labtestn (nova.conf, etc should be consolidated as much as possible now that all is Mitaka) https://phabricator.wikimedia.org/T193657

[x] Create VLANs in eqiad1 for Neutron deployments

[x] Get labnet100[34] setup with 10G ports

[x] bootstrap labcontrol1003/labcontrol1004 boxes (keystone, nova, glance)

[x] Get public v4 range for eqiad1 Neutron use [chase] (

[x] Get interface for cloud-instance-transport1-b-eqiad created in core routers [chase]

[x] bootstrap neutron-server in eqiad1 [arturo]

[x] bootstrap other neutron components in eqiad1 [arturo]

[x] At this point we sould be able to stand up an instance in eqiad1 even if it doesn't yet have public IP

[x] Collapse Keystones for eqiad [main/eqiad1] (Portal:Cloud_VPS/Admin/keystone_notes) [andrew, arturo]

[] Figure out instance migration process from nova-network region to a neutron region [andrew]

[x] Setup early workloads in Neutron in eqiad (eqiad1).

[x] Multi-region Horizon for eqiad

[] Multi-region Horizon for codfw

Phase 2

This is all about actual tenant migration.

[] Migrate Toolforge instances

[] Migrate deployment-prep instances

[] Migrate Other

See also