grizzly: nova cpu, disk, vif quotas

[Tom Fifield]

If merged https://review.openstack.org/#/c/14151 adds new functionality and options to nova: quotas on CPU resources for the KVM driver

   9 By setting the cpu_unit of an instance type in extra specs filed.
   10 cloud administrator can control the instance vcpu consumption ratio
   11 to psychical CPU.

defaults:
        cpu_quota = {'cpu_quota': 5000, 'cpu_period': 0}

[Tom Fifield (fifieldt)]

Further information at: http://wiki.openstack.org/InstanceResourceQuota

[Tom Fifield (fifieldt)]

Old patch abandoned - likely permanently, now split into 4 patches:

new patch at : https://review.openstack.org/#/c/22106/

    Part 4 for blueprint quota-instance-resource, by setting cpu_shares,
    cpu_quota,cpu_period through nova flavor-set with admin credentials,
     the cloud admin can implement flexable policy on VM vcpu to physical
    CPU consumption ratio.

    for example:
    nova flavor-key m1.low_cpu set cpu_quota=10000
    nova flavor-key m1.low_cpu set cpu_period=20000
    the instance of m1.low_cpu can only has a max of 50% CPU consumption
    of a physical CPU computing capability.

[Tom Fifield (fifieldt)]

https://review.openstack.org/#/c/22105/ adds quota for disk IO:

"disk_read_bytes_sec, disk_read_iops_sec, disk_write_bytes_sec,
disk_write_iops_sec, disk_total_bytes_sec, disk_total_iops_sec"
through nova flavor-set, user can implement instance disk IO control
policy.
for example:
nova flavor-set m1.medium set disk_write_bytes_sec=10240000,
then the max disk write IO is 10MB/s for VM user.

https://review.openstack.org/#/c/22104/ adds support for vif IO:

"vif_inbound_average, vif_inbound_burst, vif_inbound_peak,
vif_outbound_average, vif_outbound_burst, vif_outbound_peak" through
nova flavor-set, user can implement instance net traffic control policy.
for example:
nova flavor-set m1.medium set vif_inbound_average=10240000,
then the max inbound speed is 10MB/s. The usecase details of other params
will be noted on openstack-manuals.

[Tom Fifield (fifieldt)]

This should go into: ./doc/src/docbkx/openstack-config/compute-configure-quotas.xml

[Tom Fifield (fifieldt)]

and also in the admin user guide (how to set instructions)

[Tom Fifield (fifieldt)]

hmm - config-guide wise - maybe this is better in the hypervisor section, rather than the user quota section

[Tom Fifield (fifieldt)]

On second though - this is not something that needs to be configured by the deployer - it's on always, and just a matter of whether you use it or not.

It's a feature that can be taken advantage of when creating flavours, and should probably be documented there, with caveats about which hypervisors support it at current.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/40278
Committed: http://github.com/openstack/openstack-manuals/commit/ccc2c8ea322a3d899f17e99791c57603777e22f4
Submitter: Jenkins
Branch: master

commit ccc2c8ea322a3d899f17e99791c57603777e22f4
Author: annegentle <email address hidden>
Date: Mon Aug 5 15:24:56 2013 -0500

    Adds info about CPU, disk, vif, bandwidth quotas on flavors.

    Fix bug 1090654
    Fix bug 1210248

    Change-Id: I63b962dc6c9caf23b412782f00e1fe5623be68f5