Balazs Gibizer
54dea2531c
Before I97f06d0ec34cbd75c182caaa686b8de5c777a576 it was possible to create servers with neutron ports which had resource_request (e.g. a port with QoS minimum bandwidth policy rule) without allocating the requested resources in placement. So there could be servers for which the allocation needs to be healed in placement. This patch extends the nova-manage heal_allocation CLI to create the missing port allocations in placement and update the port in neutron with the resource provider uuid that is used for the allocation. There are known limiations of this patch. It does not try to reimplement Placement's allocation candidate functionality. Therefore it cannot handle the situation when there is more than one RP in the compute tree which provides the required traits for a port. In this situation deciding which RP to use would require the in_tree allocation candidate support from placement which is not available yet and 2) information about which PCI PF an SRIOV port is allocated from its VF and which RP represents that PCI device in placement. This information is only available on the compute hosts. For the unsupported cases the command will fail gracefully. As soon as migration support for such servers are implemented in the blueprint support-move-ops-with-qos-ports the admin can heal the allocation of such servers by migrating them. During healing both placement and neutron need to be updated. If any of those updates fail the code tries to roll back the previous updates for the instance to make sure that the healing can be re-run later without issue. However if the rollback fails then the script will terminate with an error message pointing to documentation that describes how to recover from such a partially healed situation manually. Closes-Bug: #1819923 Change-Id: I4b2b1688822eb2f0174df0c8c6c16d554781af85
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Team and repository tags
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.. image:: https://governance.openstack.org/tc/badges/nova.svg
:target: https://governance.openstack.org/tc/reference/tags/index.html
.. Change things from this point on
OpenStack Nova
==============
OpenStack Nova provides a cloud computing fabric controller, supporting a wide
variety of compute technologies, including: libvirt (KVM, Xen, LXC and more),
Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.
Use the following resources to learn more.
API
---
To learn how to use Nova's API, consult the documentation available online at:
- `Compute API Guide <https://developer.openstack.org/api-guide/compute/>`__
- `Compute API Reference <https://developer.openstack.org/api-ref/compute/>`__
For more information on OpenStack APIs, SDKs and CLIs in general, refer to:
- `OpenStack for App Developers <https://www.openstack.org/appdev/>`__
- `Development resources for OpenStack clouds
<https://developer.openstack.org/>`__
Operators
---------
To learn how to deploy and configure OpenStack Nova, consult the documentation
available online at:
- `OpenStack Nova <https://docs.openstack.org/nova/>`__
In the unfortunate event that bugs are discovered, they should be reported to
the appropriate bug tracker. If you obtained the software from a 3rd party
operating system vendor, it is often wise to use their own bug tracker for
reporting problems. In all other cases use the master OpenStack bug tracker,
available at:
- `Bug Tracker <https://bugs.launchpad.net/nova>`__
Developers
----------
For information on how to contribute to Nova, please see the contents of the
CONTRIBUTING.rst.
Any new code must follow the development guidelines detailed in the HACKING.rst
file, and pass all unit tests.
Further developer focused documentation is available at:
- `Official Nova Documentation <https://docs.openstack.org/nova/>`__
- `Official Client Documentation
<https://docs.openstack.org/python-novaclient/>`__
Other Information
-----------------
During each `Summit`_ and `Project Team Gathering`_, we agree on what the whole
community wants to focus on for the upcoming release. The plans for nova can
be found at:
- `Nova Specs <http://specs.openstack.org/openstack/nova-specs/>`__
.. _Summit: https://www.openstack.org/summit/
.. _Project Team Gathering: https://www.openstack.org/ptg/