yahoo-eng-team team mailing list archive

[Travis Tripp <1536849@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The metadata definitions in etc/metadefs allow each namespace to be
associated with a resource type in OpenStack.  Some types of resources
have more than one type of properties, so the namespaces allow this to
be specified using a properties_target attribute.

For example, cinder supports both "image properties" and "user
properties". Image properties affect nova scheduling and are handled by
the nova scheduler the same way image properties are.  User properties
are just plain metadata.  Example:

https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs
/compute-guest-memory-backing.json#L19

There are several metadata definitions for software that are associated
with Nova instances (OS::Nova::Instance) which should have their
properties target set to "metadata". The ability to add metadata to an
instance leveraging these definitions at launch time was recently added
to horizon. In a follow up discussion, somebody asked about using the
metadata definitions to also choose nova scheduler hints at launch time
and how to make sure that the two weren't confused. This raised our
awareness that we don't have properties_target set to "metadata" (rather
than "scheduler_hints") for OS::Nova::Instance on the following software
namespace files:

https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs
/software-databases.json#L16


https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs/software-runtimes.json#L16

https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs
/software-webservers.json#L16

It should be noted that updating namespaces is already possible with
glance-manage. E.g.

ttripp@ubuntu:/opt/stack/glance$ glance-manage db_load_metadefs etc/metadefs -h       
usage: glance-manage db_load_metadefs [-h]
                                      [path] [merge] [prefer_new] [overwrite]

positional arguments:
  path
  merge
  prefer_new
  overwrite


So, you just have to call: 

ttripp@ubuntu:/opt/stack/glance$ glance-manage db_load_metadefs
etc/metadefs true true

See also: https://youtu.be/zJpHXdBOoeM

** Affects: glance
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1536849

Title:
  Software metadata defs for OS::Nova::Instance should have properties
  target set

Status in Glance:
  New

Bug description:
  The metadata definitions in etc/metadefs allow each namespace to be
  associated with a resource type in OpenStack.  Some types of resources
  have more than one type of properties, so the namespaces allow this to
  be specified using a properties_target attribute.

  For example, cinder supports both "image properties" and "user
  properties". Image properties affect nova scheduling and are handled
  by the nova scheduler the same way image properties are.  User
  properties are just plain metadata.  Example:

  https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs
  /compute-guest-memory-backing.json#L19

  There are several metadata definitions for software that are
  associated with Nova instances (OS::Nova::Instance) which should have
  their properties target set to "metadata". The ability to add metadata
  to an instance leveraging these definitions at launch time was
  recently added to horizon. In a follow up discussion, somebody asked
  about using the metadata definitions to also choose nova scheduler
  hints at launch time and how to make sure that the two weren't
  confused. This raised our awareness that we don't have
  properties_target set to "metadata" (rather than "scheduler_hints")
  for OS::Nova::Instance on the following software namespace files:

  https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs
  /software-databases.json#L16

  
  https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs/software-runtimes.json#L16

  https://github.com/openstack/glance/blob/7ba2346795b6cc1c1c061bbe63ae1d62f812a0ca/etc/metadefs
  /software-webservers.json#L16

  It should be noted that updating namespaces is already possible with
  glance-manage. E.g.

  ttripp@ubuntu:/opt/stack/glance$ glance-manage db_load_metadefs etc/metadefs -h       
  usage: glance-manage db_load_metadefs [-h]
                                        [path] [merge] [prefer_new] [overwrite]

  positional arguments:
    path
    merge
    prefer_new
    overwrite

  
  So, you just have to call: 

  ttripp@ubuntu:/opt/stack/glance$ glance-manage db_load_metadefs
  etc/metadefs true true

  See also: https://youtu.be/zJpHXdBOoeM

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