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On 23 February 2016 at 01:02, Monty Taylor <mordred at inaugust.com> wrote:

> On 02/21/2016 11:40 PM, Andrey Kurilin wrote:
>
>> Hi!
>> `novaclient.client.Client` entry-point supports almost the same
>> arguments as `novaclient.v2.client.Client`. The difference is only in
>> api_version, so you can set up region via `novaclient.client.Client` in
>> the same way as `novaclient.v2.client.Client`.
>>
>
> The easiest way to get a properly constructed nova Client is with
> os-client-config:
>
> import os_client_config
>
> OS_PROJECT_NAME="d8af8a8f-a573-48e6-898a-af333b970a2d"
> OS_USERNAME="0b8c435b-cc4d-4e05-8a47-a2ada0539af1"
> OS_PASSWORD="REDACTED"
> OS_AUTH_URL="http://auth.vexxhost.net"
> OS_REGION_NAME="ca-ymq-1"
>
> client = os_client_config.make_client(
>     'compute',
>     auth_url=OS_AUTH_URL, username=OS_USERNAME,
>     password=OS_PASSWORD, project_name=OS_PROJECT_NAME,
>     region_name=OS_REGION_NAME)
>
> The upside is that the constructor interface is the same for all of the
> rest of the client libs too (just change the first argument) - and it will
> also read in OS_ env vars or named clouds from clouds.yaml if you have them
> set.
>
> (The 'simplest' way is to put your auth and region information into a
> clouds.yaml file like this:
>
>
> http://docs.openstack.org/developer/os-client-config/#site-specific-file-locations
>
> Such as:
>
> # ~/.config/openstack/clouds.yaml
> clouds:
>   vexxhost:
>      profile: vexxhost
>      auth:
>        project_name: d8af8a8f-a573-48e6-898a-af333b970a2d
>        username: 0b8c435b-cc4d-4e05-8a47-a2ada0539af1
>        password: REDACTED
>      region_name: ca-ymq-1
>
>
> And do:
>
> client = os_client_config.make_client('compute', cloud='vexxhost')
>
>
> If you don't want to do that for some reason but you'd like to construct a
> novaclient Client object by hand:
>
>
> from keystoneauth1 import loading
> from keystoneauth1 import session as ksa_session
> from novaclient import client as nova_client
>
> OS_PROJECT_NAME="d8af8a8f-a573-48e6-898a-af333b970a2d"
> OS_USERNAME="0b8c435b-cc4d-4e05-8a47-a2ada0539af1"
> OS_PASSWORD="REDACTED"
> OS_AUTH_URL="http://auth.vexxhost.net"
> OS_REGION_NAME="ca-ymq-1"
>
> # Get the auth loader for the password auth plugin
> loader = loading.get_plugin_loader('password')
> # Construct the auth plugin
> auth_plugin = loader.load_from_options(
>     auth_url=OS_AUTH_URL, username=OS_USERNAME, password=OS_PASSWORD,
>     project_name=OS_PROJECT_NAME)
>

note that loaders here are generally things like load from config file, or
load from argparse arguments. If you are doing everything in a script like
this you would probably just use the keystoneauth1.identity.Password like

from keystoneauth1 import identity

auth_plugin = identity.Password(auth_url=....)



> # Construct a keystone session
> # Other arguments that are potentially useful here are:
> #  verify - bool, whether or not to verify SSL connection validity
> #  cert - SSL cert information
> #  timout - time in seconds to use for connection level TCP timeouts
> session = ksa_session.Session(auth_plugin)
>
> # Now make the client
> # Other arguments you may be interested in:
> #  service_name - if you need to specify a service name for finding the
> #                 right service in the catalog
> #  service_type - if the cloud in question has given a different
> #                 service type (should be 'compute' for nova - but
> #                 novaclient sets it, so it's safe to omit in most cases
> #  endpoint_override - if you want to tell it to use a different URL
> #                      than what the keystone catalog returns
> #  endpoint_type - if you need to specify admin or internal
> #                  endpoints rather than the default 'public'
> #                  Note that in glance and barbican, this key is called
> #                  'interface'
> client = nova_client.Client(
>     version='2.0', # or set the specific microversion you want
>     session=session, region_name=OS_REGION_NAME)
>
> It might be clear why I prefer the os_client_config factory function
> instead - but what I prefer and what you prefer might not be the same
> thing. :)
>
> On Mon, Feb 22, 2016 at 6:11 AM, Xav Paice <xavpaice at gmail.com
>> <mailto:xavpaice at gmail.com>> wrote:
>>
>>     Hi,
>>
>>     In http://docs.openstack.org/developer/python-novaclient/api.html
>>     it's got some pretty clear instructions not to
>>     use novaclient.v2.client.Client but I can't see another way to
>>     specify the region - there's more than one in my installation, and
>>     no param for region in novaclient.client.Client
>>
>>     Shall I hunt down/write a blueprint for that?
>>
>>
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>>
>>
>>
>> --
>> Best regards,
>> Andrey Kurilin.
>>
>>
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>>
>
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