Nova onboarding What is Nova Novas mission is To implement - - PowerPoint PPT Presentation

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Mar 29, 2024 232 likes •345 views

Nova onboarding What is Nova Novas mission is To implement services and associated libraries to provide massively scalable, on demand, self service access to compute resources, including bare metal, virtual machines, and containers.

SLIDE 1

Nova onboarding

SLIDE 2

What is Nova

Nova’s mission is “To implement services and associated libraries to provide massively scalable, on demand, self service access to compute resources, including bare metal, virtual machines, and containers.”

SLIDE 3

How to navigate - People

PTL and the core teams (nova, nova-specs, nova-stable, placement)
IRC channels #openstack-nova, #openstack-placement
Weekly meeting with agenda
On the MailingList with [nova] and/or [placement] tag

SLIDE 4

How to navigate - Process

Blueprints and specs
Bugs
Milestones

○ Spec freeze at M2 ○ Feature code freeze at M3

Runways

SLIDE 5

How to navigate

Architecture
Repositories

○ https://github.com/openstack/nova ○ https://github.com/openstack/python-novaclient ○ https://github.com/openstack/python-openstackclient/tree/master/openstackclient/compute ○ https://github.com/openstack/os-vif ○ https://github.com/openstack/os-brick ○ https://github.com/openstack/placement ○ https://github.com/openstack/os-traits ○ https://github.com/openstack/osc-placement

SLIDE 6

How to navigate - Directory structure

Nova directory structure

○ api/ ○ cmd/ ○ compute/ ○ conductor/ ○ conf/ ○ db/ ○ network/ ○ notifications/ ○

bjects/

○ privsep/ ○ scheduler/ ○ tests/ ○ virt/ ○ volume/

Placement directory structure

○ db/ ○ handlers/ ○

bjects/

○ policies/ ○ schemas/ ○ tests/

SLIDE 7

How to navigate - Test structure

Nova test structure:

○ Unit test ○ Functional test (api sample, notification sample, scenarios with fake virt driver) ○ Tempest test

Placement test structure

○ Unit test ○ Gabbit test

Look into tox.ini for help

SLIDE 8

How to navigate

Logs

○ debug = True ○ sudo journalctl --unit devstack@n-* | grep <server uuid> ○ sudo journalctl --unit devstack@n-* | grep <req-id>

Configuration

○ nova.conf package ○ tox -e genconfig && cat ./etc/nova/nova.conf.sample

SLIDE 9

How can you help us

Bug triage
Low hanging bugs
Closing the OSC client support gaps (nova, placement)
Add support for the placement API microversions added in Rocky

○ https://blueprints.launchpad.net/nova/+spec/placement-osc-plugin-stein ○ Starting at microversion 1.18: https://docs.openstack.org/nova/latest/user/placement.html

SLIDE 10

cell2 cell1

Server create request flow

nova-api nova-scheduler nova-conductor (super) nova-compute nova-compute nova-conductor (cell) nova-compute nova-compute nova-conductor (cell) reschedule placement-api