Add rpc tunables to nova.conf

[Bjoern]

Please add the following rpc settings for oslo.messaging when running nova service via the nova.conf :

[DEFAULT]
rpc_thread_pool_size = 180
rpc_conn_pool_size = 180
rpc_response_timeout = 180

I would propose 180 as default settings, the original default values are way too low in case you spin up more than 80 instances at once , causing RPC timeouts/waiting for message errors.

[Bjoern (bjoern-t)]

This needs to be back ported to Juno

[Christopher H. Laco (claco)]

This is likely a duplicate of https://github.com/rcbops/rpc-openstack/issues/220, which is seen as more of a deployer specific set of tweaks given a known hardware configuration.

[Nolan Brubaker (nolan-brubaker)]

Not sure it's a duplicate; if the variables don't exist in OSAD, they'd need to be added for a deployer to take advantage of them.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/205204

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: kilo
Review: https://review.openstack.org/205205

[Matthew Thode (prometheanfire)]

It doesn't look like this is backportable to juno, no rpc config options that I could find in http://docs.openstack.org/juno/config-reference/content/list-of-compute-config-options.html

I'm gonna be checking a generated config via tox -egenconfig to be sure though

[Bjoern (bjoern-t)]

Yes, it's not in the docs. I found that parameter in the code or at oslo.messaging docs

[Matthew Thode (prometheanfire)]

ya, just generated an example config and it's there, will be adding it shortly

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: juno
Review: https://review.openstack.org/205256

[OpenStack Infra (hudson-openstack)]

Change abandoned by Matthew Thode (<email address hidden>) on branch: kilo
Review: https://review.openstack.org/205205
Reason: abandoning as a bad cherrypick (bad change-id, same as master)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: kilo
Review: https://review.openstack.org/205270

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/205204
Committed: https://git.openstack.org/cgit/stackforge/os-ansible-deployment/commit/?id=e09823570fa5ee4043b4990cea301504a256aae5
Submitter: Jenkins
Branch: master

commit e09823570fa5ee4043b4990cea301504a256aae5
Author: Matthew Thode <email address hidden>
Date: Thu Jul 23 12:58:37 2015 -0500

    Add remote procedure call tunables to nova and neutron

    This allows us to override the default settings, which is useful for
    large deployments or deploying a large number of instances. It also
    uses an unused variable in neutron for setting the rpc_backend.

    Change-Id: I83d11eb79b30dda51c6f738433ca960a0f63246e
    Closes-bug: 1471926

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/205270
Committed: https://git.openstack.org/cgit/stackforge/os-ansible-deployment/commit/?id=cc3a2898749236371fec52a5deb37d6a9051a3a0
Submitter: Jenkins
Branch: kilo

commit cc3a2898749236371fec52a5deb37d6a9051a3a0
Author: Matthew Thode <email address hidden>
Date: Thu Jul 23 12:58:37 2015 -0500

    Add remote procedure call tunables to nova and neutron

    This allows us to override the default settings, which is useful for
    large deployments or deploying a large number of instances. It also
    uses an unused variable in neutron for setting the rpc_backend.

    Change-Id: I25634233efbb3e47ac9a4e199d5caf072b13fd92
    Closes-bug: 1471926
    (cherry-picked from commit I83d11eb79b30dda51c6f738433ca960a0f63246e)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/205256
Committed: https://git.openstack.org/cgit/stackforge/os-ansible-deployment/commit/?id=d715e1c81860a04467df35167f4b8ff8638f8e49
Submitter: Jenkins
Branch: juno

commit d715e1c81860a04467df35167f4b8ff8638f8e49
Author: Matthew Thode <email address hidden>
Date: Thu Jul 23 14:36:16 2015 -0500

    Add remote procedure call tunables to nova and neutron

    This allows us to override the default settings, which is useful for
    large deployments or deploying a large number of instances.

    Change-Id: I226be0147b8b5a0b71cdda1bfb25d06b57815f2a
    Closes-bug: 1471926
    (cherry picked from commit I83d11eb79b30dda51c6f738433ca960a0f63246e)

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/openstack-ansible 11.2.14 release.