Re: [openstack-dev] [sdk] issues with using OpenStack SDK Python client

[gerard.d...@wipro.com]

Many thanks !

Adding a gateway to a router: it looks like it works in the router creation 
method, but not in the router update method.
(i.e., passing a external_gateway_info dictionary in 
conn.network.create_router() worked,
but doing the same with conn.network.add_gateway_to_router() did not work)

the (verbose) code snippet is:

external_network = conn.network.find_network(EXTERNAL_NETWORK_NAME)

onap_gateway_external_subnets = []
for ext_subn_id in external_network.subnet_ids:
onap_gateway_external_subnets.append({'subnet_id':ext_subn_id})

network_dict_body = {
'network_id': external_network.id,
'enable_snat': True,
'external_fixed_ips': onap_gateway_external_subnets}

onap_router = conn.network.create_router(
name = ONAP_ROUTER_NAME,
description = ONAP_ROUTER_DESC,
external_gateway_info = network_dict_body,
is_admin_state_up = True)


I got the idea of trying at creation time, from the create_router API 
(external_gateway_info entry) at
https://developer.openstack.org/api-ref/network/v2/#layer-3-networking
(thanks for the tip!)

So there might be a difference between how network.create_router() handles this 
external_gateway_info,
versus how network.add_gateway_to_router() handles it.



About identity_api_version in clouds.yaml:
yep, that works !


About the "!=None" comparison problem: OK, thanks for the fixing effort in 
progress !

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Re: [openstack-dev] [sdk] issues with using OpenStack SDK Python client

[Mohammed Naser]

Hey Gerard,

Replies in-line!

Thanks,
Mohammed

On Fri, May 4, 2018 at 6:25 PM, gerard.d...@wipro.com
 wrote:
> Many thanks for the welcome ;)
>
> And many thanks for the speedy and very useful response !
>
> Details below.
>
> Best regards,
> Gerard
>
>
> 
> For add_gateway_to_router():
>
> So I tried this:
> external_network = conn.network.find_network(EXTERNAL_NETWORK_NAME)
> network_dict_body = {'network_id' : external_network.id}
> conn.network.add_gateway_to_router(onap_router, **network_dict_body)
>
> ==> no errors, but the router is not updated (no gateway is set)
> (external_gateway_info is still None)
>
> (same with conn.network.add_gateway_to_router(onap_router, 
> network_id=external_network.id) )
>
> Is the body parameter for add_gateway_to_router() expected to correspond to a 
> Network ?
> (from a router point of view, a "gateway" is an external network)
>
> Should the network's subnet(s) be also specified in the dictionary ? Maybe 
> only
> if certain specific subnets are desired for the gateway role. Otherwise,
> the default would apply: there is usually only 1 subnet, and that's the one
> to be used. So network_id would be enough to specify a gateway used in a 
> standard way.
>
> Maybe more details about what is expected in this body dictionary should be 
> documented
> in the add_gateway_to_router() section?
>
> In Horizon, when selecting a router, and selecting "Set Gateway", the user is 
> only
> asked to pick an external network from a dropdown list. Then, a router 
> interface is
> implicitly created, with an IP@ picked from the subnet of that network.

Have you reviewed the API reference regarding to this?  OpenStack SDK
really just pushes
the data straight through to the API in this case.

>
> 
> For router deletion: it looks like it's the "!= None" test on the returned 
> object that has an issue
>
> onap_router  = conn.network.find_router(ONAP_ROUTER_NAME)
> if onap_router != None:
> print('Deleting ONAP router...')
> conn.network.delete_router(onap_router.id)
> else:
> print('No ONAP router found...')
>
> I added traceback printouts in the code.
>
> printing the router before trying to delete it:
>  onap_router:
>  openstack.network.v2.router.Router(updated_at=2018-05-04T21:07:23Z, 
> description=Router created for ONAP, status=ACTIVE, ha=False, 
> name=ONAP_router, created_at=2018-05-04T21:07:20Z, 
> tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, availability_zone_hints=[], 
> admin_state_up=True, availability_zones=['nova'], tags=[], revision=3, 
> routes=[], id=675abd14-096a-4b28-b764-31ca7098913b, 
> external_gateway_info=None, distributed=False, flavor_id=None)
>
>
> *** Exception:  'NoneType' object has no attribute 
> '_body'
> *** traceback.print_tb():
>   File "auto_script_config_openstack_for_onap.py", line 141, in 
> delete_all_ONAP
> if onap_router != None:
>   File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
> 358, in __eq__
> return all([self._body.attributes == comparand._body.attributes,
> *** traceback.print_exception():
> Traceback (most recent call last):
>   File "auto_script_config_openstack_for_onap.py", line 141, in 
> delete_all_ONAP
> if onap_router != None:
>   File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
> 358, in __eq__
> return all([self._body.attributes == comparand._body.attributes,
> AttributeError: 'NoneType' object has no attribute '_body'
>

This looks like a bug to me, I've pushed up a fix here which you can
follow: https://review.openstack.org/567230

>
> 
> For identity_api_version=3 :
>
> yes, that worked !
>
> Could that identity_api_version parameter also/instead be specified in the 
> clouds.yaml file ?
>

Yes, you can do that, your file would look something like this:

https://github.com/openstack/openstack-ansible-openstack_openrc/blob/master/templates/clouds.yaml.j2

This is a templated file but you can see how you can add
"identity_api_version" in there (note: it's not in the same level as
"auth")

>
> 
> Here's the traceback info for the flavor error, also on the "!= None" test :
>
> *** Exception:  'NoneType' object has no attribute 
> '_body'
> *** traceback.print_tb():
>   File "auto_script_config_openstack_for_onap.py", line 537, in 
> configure_all_ONAP
> if tiny_flavor != None:
>   File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
> 358, in __eq__
> return all([self._body.attributes == comparand._body.attributes,
> *** traceback.print_exception():
> Traceback (most recent call last):
>   File "auto_script_config_openstack_for_onap.py", line 537, in 
> configure_all_ONAP
> 

Re: [openstack-dev] [sdk] issues with using OpenStack SDK Python client

[gerard.d...@wipro.com]

more details about router deletion:

I tried replacing the "!=None" test with a try statement:

try:
onap_router = conn.network.find_router(ONAP_ROUTER_NAME)
conn.network.delete_router(onap_router.id)

(router print-out just before deleting):
openstack.network.v2.router.Router(revision=3, distributed=False, 
status=ACTIVE, tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, 
created_at=2018-05-07T20:37:56Z, name=ONAP_router, admin_state_up=True, 
tags=[], updated_at=2018-05-07T20:37:59Z, ha=False, 
id=9fc30b97-3942--856a-69c9e2368e02, availability_zone_hints=[], 
flavor_id=None, description=Router created for ONAP, 
availability_zones=['nova'], routes=[], external_gateway_info=None)


*** traceback.print_exception():
Traceback (most recent call last):
  File "auto_script_config_openstack_for_onap.py", line 158, in delete_all_ONAP
conn.network.delete_router(onap_router.id)
  File "/usr/local/lib/python3.5/dist-packages/openstack/network/v2/_proxy.py", 
line 2255, in delete_router
self._delete(_router.Router, router, ignore_missing=ignore_missing)
  File "/usr/local/lib/python3.5/dist-packages/openstack/proxy.py", line 41, in 
check
return method(self, expected, actual, *args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/openstack/proxy.py", line 146, 
in _delete
value=value,
  File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
847, in delete
self._translate_response(response, has_body=False, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
666, in _translate_response
exceptions.raise_from_response(response, error_message=error_message)
  File "/usr/local/lib/python3.5/dist-packages/openstack/exceptions.py", line 
212, in raise_from_response
http_status=http_status, request_id=request_id
openstack.exceptions.ConflictException: Unable to delete Router for 
9fc30b97-3942--856a-69c9e2368e02



(note: deleting the router from either the openstack CLI or from the Horizon 
GUI works fine)

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Re: [openstack-dev] [sdk] issues with using OpenStack SDK Python client

[gerard.d...@wipro.com]

Many thanks for the welcome ;)

And many thanks for the speedy and very useful response !

Details below.

Best regards,
Gerard



For add_gateway_to_router():

So I tried this:
external_network = conn.network.find_network(EXTERNAL_NETWORK_NAME)
network_dict_body = {'network_id' : external_network.id}
conn.network.add_gateway_to_router(onap_router, **network_dict_body)

==> no errors, but the router is not updated (no gateway is set)
(external_gateway_info is still None)

(same with conn.network.add_gateway_to_router(onap_router, 
network_id=external_network.id) )

Is the body parameter for add_gateway_to_router() expected to correspond to a 
Network ?
(from a router point of view, a "gateway" is an external network)

Should the network's subnet(s) be also specified in the dictionary ? Maybe only
if certain specific subnets are desired for the gateway role. Otherwise,
the default would apply: there is usually only 1 subnet, and that's the one
to be used. So network_id would be enough to specify a gateway used in a 
standard way.

Maybe more details about what is expected in this body dictionary should be 
documented
in the add_gateway_to_router() section?

In Horizon, when selecting a router, and selecting "Set Gateway", the user is 
only
asked to pick an external network from a dropdown list. Then, a router 
interface is
implicitly created, with an IP@ picked from the subnet of that network.



For router deletion: it looks like it's the "!= None" test on the returned 
object that has an issue

onap_router  = conn.network.find_router(ONAP_ROUTER_NAME)
if onap_router != None:
print('Deleting ONAP router...')
conn.network.delete_router(onap_router.id)
else:
print('No ONAP router found...')

I added traceback printouts in the code.

printing the router before trying to delete it:
 onap_router:
 openstack.network.v2.router.Router(updated_at=2018-05-04T21:07:23Z, 
description=Router created for ONAP, status=ACTIVE, ha=False, name=ONAP_router, 
created_at=2018-05-04T21:07:20Z, tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, 
availability_zone_hints=[], admin_state_up=True, availability_zones=['nova'], 
tags=[], revision=3, routes=[], id=675abd14-096a-4b28-b764-31ca7098913b, 
external_gateway_info=None, distributed=False, flavor_id=None)


*** Exception:  'NoneType' object has no attribute 
'_body'
*** traceback.print_tb():
  File "auto_script_config_openstack_for_onap.py", line 141, in delete_all_ONAP
if onap_router != None:
  File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
358, in __eq__
return all([self._body.attributes == comparand._body.attributes,
*** traceback.print_exception():
Traceback (most recent call last):
  File "auto_script_config_openstack_for_onap.py", line 141, in delete_all_ONAP
if onap_router != None:
  File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
358, in __eq__
return all([self._body.attributes == comparand._body.attributes,
AttributeError: 'NoneType' object has no attribute '_body'




For identity_api_version=3 :

yes, that worked !

Could that identity_api_version parameter also/instead be specified in the 
clouds.yaml file ?



Here's the traceback info for the flavor error, also on the "!= None" test :

*** Exception:  'NoneType' object has no attribute 
'_body'
*** traceback.print_tb():
  File "auto_script_config_openstack_for_onap.py", line 537, in 
configure_all_ONAP
if tiny_flavor != None:
  File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
358, in __eq__
return all([self._body.attributes == comparand._body.attributes,
*** traceback.print_exception():
Traceback (most recent call last):
  File "auto_script_config_openstack_for_onap.py", line 537, in 
configure_all_ONAP
if tiny_flavor != None:
  File "/usr/local/lib/python3.5/dist-packages/openstack/resource.py", line 
358, in __eq__
return all([self._body.attributes == comparand._body.attributes,
AttributeError: 'NoneType' object has no attribute '_body'




For the image creation:

ah, OK, indeed, there is an image proxy (even 2: v1, v2),
and maybe the compute / image operations are redundant (or maybe not, for 
convenience) ?

and yes, it worked ! There was no need for additional parameters.



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Re: [openstack-dev] [sdk] issues with using OpenStack SDK Python client

[Monty Taylor]

On 05/04/2018 01:34 PM, gerard.d...@wipro.com wrote:

Hi everybody,

As a bit of a novice, I'm trying to use OpenStack SDK 0.13 in an 
OPNFV/ONAP project (Auto).


Yay! Welcome.

I'm able to use the compute and network proxies, but have problems with 
the identity proxy,


so I can't create projects and users.

With network, I can create a network, a router, router interfaces, but 
can't add a gateway to a router. Also, deleting a router fails.


With compute, I can't create flavors, and not sure if there is a 
"create_image" method ?


Specific issues are listed below with more details.

Any pointers (configuration, installation, usage, ...) and URLs to 
examples and documentation would be welcome.


For documentation, I've been looking mostly at:

https://docs.openstack.org/openstacksdk/latest/user/proxies/network.html

https://docs.openstack.org/openstacksdk/latest/user/proxies/compute.html

https://docs.openstack.org/openstacksdk/latest/user/proxies/identity_v3.html 


Yes, that's all good documentation to follow.



Thanks in advance,

Gerard

For all code, import statement and Connection creation is as follows 
(constants defined before):


import openstack

conn = openstack.connect(cloud=OPENSTACK_CLOUD_NAME, 
region_name=OPENSTACK_REGION_NAME)


1) problem adding a gateway (external network) to a router:

not sure how to build a dictionary body (couldn't find examples online)

tried this:

network_dict_body = {'network_id': public_network.id}

and this (from looking at a router printout):

network_dict_body = {

     'external_fixed_ips': [{'subnet_id' : public_subnet.id}],

     'network_id': public_network.id

}

in both cases, tried this command:

conn.network.add_gateway_to_router(onap_router,network_dict_body)

getting the error:

Exception:  add_gateway_to_router() takes 2 
positional arguments but 3 were given


The signature for add_gateway_to_router looks like this:

  def add_gateway_to_router(self, router, **body):

the ** indicate that it's looking for the body as keyword arguments. 
Change your code to:


  conn.network.add_gateway_to_router(onap_router, **network_dict_body)

and it should work.

You could also, should you feel like it, do:

  conn.network.add_gateway_to_router(
  onap_router,
  external_fixed_ips=[{'subnet_id' : public_subnet.id}],
  network_id=public_network.id
  )

which is basically what the ** in **network_dict_body is doing.


printing the router gave this:

openstack.network.v2.router.Router(distributed=False, 
tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, 
created_at=2018-05-01T01:16:08Z, external_gateway_info=None, 
status=ACTIVE, availability_zone_hints=[], ha=False, tags=[], 
description=Router created for ONAP, admin_state_up=True, revision=1, 
flavor_id=None, id=b923fba5-5027-47b6-b679-29c331ac1aba, 
updated_at=2018-05-01T01:16:08Z, routes=[], name=onap_router, 
availability_zones=[])


2) problem deleting routers:

onap_router = conn.network.find_router(ONAP_ROUTER_NAME)

conn.network.delete_router(onap_router.id)

(same if conn.network.delete_router(onap_router))

getting the error:

Exception:  'NoneType' object has no attribute 
'_body'


I'm not sure yet what's causing this - it's the same issue you're having 
below with flavors - I'm looking in to it.


Do you have tracebacks for the exception?


printing the router that had been created gave this:

openstack.network.v2.router.Router(description=Router created for ONAP, 
status=ACTIVE, routes=[], updated_at=2018-05-01T01:16:11Z, ha=False, 
id=b923fba5-5027-47b6-b679-29c331ac1aba, external_gateway_info=None, 
admin_state_up=True, availability_zone_hints=[], 
tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, name=onap_router, 
availability_zones=['nova'], tags=[], revision=3, distributed=False, 
flavor_id=None, created_at=2018-05-01T01:16:08Z)


3) problem reaching the identity service:


There is an underlying bug/deficiency in the code that's next on my list 
to fix, but I'm waiting to land a patch to keystoneauth first. For now, 
add identity_api_version=3 to your openstack.connect line and it should 
work.


Also - sorry about that - that's a terrible experience and is definitely 
not the way it should/will work.


(although I can reach compute and network services, and although there 
are users and projects in the Openstack instance: "admin" and "service" 
projects, "ceilometer", "nova", etc. (and "admin") users)


     print("\nList Users:")

     i=1

     for user in conn.identity.users():

     print('User',str(i),'\n',user,'\n')

     i+=1

getting the error:

List Users:

Exception:  
NotFoundException: 404


     print("\nList Projects:")

     i=1

     for project in conn.identity.projects():

     print('Project',str(i),'\n',project,'\n')

     i+=1

also getting an error, but not the same as users:

List Projects:

Exception:  'Proxy' object has no attribute 
'projects'


if trying to create a project:

     onap_project 

[openstack-dev] [sdk] issues with using OpenStack SDK Python client

[gerard.d...@wipro.com]

Hi everybody,

As a bit of a novice, I'm trying to use OpenStack SDK 0.13 in an OPNFV/ONAP 
project (Auto).

I'm able to use the compute and network proxies, but have problems with the 
identity proxy,
so I can't create projects and users.
With network, I can create a network, a router, router interfaces, but can't 
add a gateway to a router. Also, deleting a router fails.
With compute, I can't create flavors, and not sure if there is a "create_image" 
method ?

Specific issues are listed below with more details.

Any pointers (configuration, installation, usage, ...) and URLs to examples and 
documentation would be welcome.
For documentation, I've been looking mostly at:
https://docs.openstack.org/openstacksdk/latest/user/proxies/network.html
https://docs.openstack.org/openstacksdk/latest/user/proxies/compute.html
https://docs.openstack.org/openstacksdk/latest/user/proxies/identity_v3.html

Thanks in advance,
Gerard




For all code, import statement and Connection creation is as follows (constants 
defined before):
import openstack
conn = openstack.connect(cloud=OPENSTACK_CLOUD_NAME, 
region_name=OPENSTACK_REGION_NAME)


1) problem adding a gateway (external network) to a router:
not sure how to build a dictionary body (couldn't find examples online)

tried this:
network_dict_body = {'network_id': public_network.id}

and this (from looking at a router printout):
network_dict_body = {
'external_fixed_ips': [{'subnet_id' : public_subnet.id}],
'network_id': public_network.id
}

in both cases, tried this command:
conn.network.add_gateway_to_router(onap_router,network_dict_body)

getting the error:
Exception:  add_gateway_to_router() takes 2 positional 
arguments but 3 were given

printing the router gave this:
openstack.network.v2.router.Router(distributed=False, 
tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, created_at=2018-05-01T01:16:08Z, 
external_gateway_info=None, status=ACTIVE, availability_zone_hints=[], 
ha=False, tags=[], description=Router created for ONAP, admin_state_up=True, 
revision=1, flavor_id=None, id=b923fba5-5027-47b6-b679-29c331ac1aba, 
updated_at=2018-05-01T01:16:08Z, routes=[], name=onap_router, 
availability_zones=[])


2) problem deleting routers:
onap_router = conn.network.find_router(ONAP_ROUTER_NAME)
conn.network.delete_router(onap_router.id)
(same if conn.network.delete_router(onap_router))

getting the error:
Exception:  'NoneType' object has no attribute '_body'

printing the router that had been created gave this:
openstack.network.v2.router.Router(description=Router created for ONAP, 
status=ACTIVE, routes=[], updated_at=2018-05-01T01:16:11Z, ha=False, 
id=b923fba5-5027-47b6-b679-29c331ac1aba, external_gateway_info=None, 
admin_state_up=True, availability_zone_hints=[], 
tenant_id=03aa47d3bcfd48199e0470b1c86a7f5b, name=onap_router, 
availability_zones=['nova'], tags=[], revision=3, distributed=False, 
flavor_id=None, created_at=2018-05-01T01:16:08Z)



3) problem reaching the identity service:
(although I can reach compute and network services, and although there are 
users and projects in the Openstack instance: "admin" and "service" projects, 
"ceilometer", "nova", etc. (and "admin") users)

print("\nList Users:")
i=1
for user in conn.identity.users():
print('User',str(i),'\n',user,'\n')
i+=1

getting the error:
List Users:
Exception:  NotFoundException: 
404

print("\nList Projects:")
i=1
for project in conn.identity.projects():
print('Project',str(i),'\n',project,'\n')
i+=1

also getting an error, but not the same as users:
List Projects:
Exception:  'Proxy' object has no attribute 'projects'


if trying to create a project:

onap_project = conn.identity.find_project(ONAP_TENANT_NAME)
if onap_project != None:
print('ONAP project/tenant already exists')
else:
print('Creating ONAP project/tenant...')
onap_project = conn.identity.create_project(
name = ONAP_TENANT_NAME,
description = ONAP_TENANT_DESC,
is_enabled = True)


getting the error:
Exception:  'Proxy' object has no attribute 
'find_project'


4) problem creating flavors:

tiny_flavor = conn.compute.find_flavor("m1.tiny")
if tiny_flavor != None:
print('m1.tiny Flavor already exists')
   else:
print('Creating m1.tiny Flavor...')
tiny_flavor = conn.compute.create_flavor(
name = 'm1.tiny',
vcpus = 1,
disk = 1,
ram = 512,
ephemeral = 0,
#swap = 0,
#rxtx_factor = 1.0,
is_public = True)

(by the way, maybe swap and rxtx are not supposed to be set ?)

getting the error:
Exception:  'NoneType' object has no attribute '_body'


5) how to create images ?
there is a compute proxy method: find_image()
but it looks like there is no