[ovirt-users] Request for oVirt Ansible modules testing feedback
Yaniv Kaul
ykaul at redhat.com
Tue Jan 10 15:41:15 UTC 2017
On Fri, Jan 6, 2017 at 3:51 PM, Nathanaël Blanchet <blanchet at abes.fr> wrote:
> There was a last error in the script :
>
> snap_service = snaps_service.snapshot_service(snap.id) instead of
> snap_service = snaps_service.snap_service(snap.id)
>
> For those who are interested in using a full remove_vm_snapshot working
> script:
>
Perhaps worth contributing to the examples[1] of the SDK?
Y.
[1] https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk/examples
>
> # Create the connection to the server:
> connection = sdk.Connection(
> url='https://engine/ovirt-engine/api',
> username='admin at internal',
> password='passwd',
> # ca_file='ca.pem',
> insecure=True,
> debug=True,
> log=logging.getLogger(),
> )
>
> # Locate the virtual machines service and use it to find the virtual
> # machine:
> vms_service = connection.system_service().vms_service()
> vm = vms_service.list(search='name=myvm')[0]
>
> # Locate the service that manages the snapshots of the virtual machine:
> vm_service = vms_service.vm_service(vm.id)
> snaps_service = vm_service.snapshots_service()
> snaps = snaps_service.list()
> snap = [s for s in snaps if s.description == 'My snapshot2'][0]
>
> # Remove the snapshot:
> snap_service = snaps_service.snapshot_service(snap.id)
> snap_service.remove()
>
> # Close the connection to the server:
> connection.close()
>
>
> Le 06/01/2017 à 14:44, Nathanaël Blanchet a écrit :
>
>>
>>
>> Le 06/01/2017 à 13:39, Juan Hernández a écrit :
>>
>>> On 01/06/2017 12:20 PM, Nathanaël Blanchet wrote:
>>>
>>>>
>>>> Le 04/01/2017 à 18:55, Juan Hernández a écrit :
>>>>
>>>>> On 01/04/2017 05:38 PM, Nathanaël Blanchet wrote:
>>>>>
>>>>>> Le 04/01/2017 à 15:41, Juan Hernández a écrit :
>>>>>>
>>>>>>> On 01/04/2017 12:30 PM, Yaniv Kaul wrote:
>>>>>>>
>>>>>>>> On Wed, Jan 4, 2017 at 1:04 PM, Nicolas Ecarnot <
>>>>>>>> nicolas at ecarnot.net
>>>>>>>> <mailto:nicolas at ecarnot.net>> wrote:
>>>>>>>>
>>>>>>>> Hello,
>>>>>>>>
>>>>>>>> Le 04/01/2017 à 11:49, Nathanaël Blanchet a écrit :
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Le 04/01/2017 à 10:09, Andrea Ghelardi a écrit :
>>>>>>>>
>>>>>>>>
>>>>>>>> Personally I don’t think ansible and ovirt-shell are
>>>>>>>> mutually exclusive.
>>>>>>>>
>>>>>>>> Those who are in ansible and devops realms are not
>>>>>>>> really
>>>>>>>> scared by
>>>>>>>> making python/ansible work with ovirt.
>>>>>>>>
>>>>>>>> From what I gather, playbooks are quite a de-facto
>>>>>>>> pre-requisite to
>>>>>>>> build up a real SaaC “Software as a Code”
>>>>>>>> environment.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On the other hand, ovirt-shell can and is a fast/easy
>>>>>>>> way to
>>>>>>>> perform
>>>>>>>> “normal daily tasks”.
>>>>>>>>
>>>>>>>> totally agree but ovirt-shell is deprecated in 4.1 et
>>>>>>>> will be
>>>>>>>> removed in
>>>>>>>> 4.2. Ansible or sdk4 are proposed as an alternative.
>>>>>>>>
>>>>>>>>
>>>>>>>> Could someone point me to an URL where sdk4 is fully
>>>>>>>> documented, as
>>>>>>>> I have to get ready for ovirt-shell deprecation?
>>>>>>>>
>>>>>>>>
>>>>>>>> The Rest API is partially documented under
>>>>>>>> https://<engine>/api/model .
>>>>>>>> It's not complete yet. All new features in 4.0 are documented and
>>>>>>>> we are
>>>>>>>> working on the 'older' features now.
>>>>>>>> (contributions are welcome!)
>>>>>>>>
>>>>>>>>
>>>>>>>> I'm sure no one at Redhat thought about deprecating a tool in
>>>>>>>> favor
>>>>>>>> of a new one before providing a complete user doc!
>>>>>>>>
>>>>>>>>
>>>>>>>> In addition, the SDK RPM itself contains many examples. See [1].
>>>>>>>> (contributions are welcome!)
>>>>>>>>
>>>>>>>> Y.
>>>>>>>>
>>>>>>>> [1] https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk/
>>>>>>>> examples
>>>>>>>>
>>>>>>>> Although these examples, I can successfully create a snapshot, but I
>>>>>> didn't find the way to delete it...
>>>>>> Regarding many example, it should be possible to locate any service
>>>>>> by :
>>>>>> name_service = connection.system_service().name.service()
>>>>>>
>>>>>> So logically it should be doable with snapshot like
>>>>>> snapshots_service = connection.system_service().snapshots.service()
>>>>>> but : AttributeError: 'SystemService' object has no attribute
>>>>>> 'snapshots
>>>>>>
>>>>>> In the SDK the services are arranged in a tree structure that mimics
>>>>> the
>>>>> URL structure of the API. For example, if you want to get the service
>>>>> that manages a particular snapshot, in the API you would use an URL
>>>>> like
>>>>> this:
>>>>>
>>>>> /ovirt-engine/api/vms/123/snapshots/456
>>>>>
>>>>> In the Python SDK that translates into this:
>>>>>
>>>>> snap_service = connection.system_service() \
>>>>> .vms_service() \
>>>>> .vm_service('123') \
>>>>> .snapshots_service() \
>>>>> .snapshot_service('456')
>>>>>
>>>>> There is also a generic "service" method that is useful when you
>>>>> already
>>>>> have all that path as an string:
>>>>>
>>>>> snap_service = connection.service("vms/123/snapshots/456")
>>>>>
>>>>> Both return exactly the same object. The first is usually better when
>>>>> you are calculating the path of the object step by step, and I
>>>>> generally
>>>>> prefer it as it is less error prone.
>>>>>
>>>>> Once you have the reference to the service, you can use the 'remove'
>>>>> method:
>>>>>
>>>>> snap_service.remove()
>>>>>
>>>>> If you need to search by the names of the objects, then you can use the
>>>>> 'search' methods, which are only available for the top level objects,
>>>>> like VM, data centers, clusters, etc. For example, to find your virtual
>>>>> machine and then the snapshot:
>>>>>
>>>>> # Get the root service:
>>>>> system_service = connection.system_service()
>>>>>
>>>>> # Find the virtual machine:
>>>>> vms_service = system_service.vms_service()
>>>>> vm = vms_service.list(search='name=myvm')[0]
>>>>>
>>>>> # Find the snapshot:
>>>>> vm_service = vms_service.vm_service(vm.id)
>>>>> snaps_service = vm_service.snapshots_service()
>>>>> snaps = snaps_service.list()
>>>>> snap = [s for s in snaps where s.description == 'My snap'][0]
>>>>>
>>>> sounds good, thank so much for taking time to explain, but for the last
>>>> entry, I get ;
>>>>
>>>> snap = [s for s in snaps where s.description == 'My snapshot2'][0]
>>>> ^
>>>> SyntaxError: invalid syntax
>>>>
>>> I apologize, I wrote that too fast. That is SQL syntax, not Python. In
>>> python should be "if" instead of "where":
>>>
>>> snap = [s for s in snaps if s.description == 'My snapshot2'][0]
>>>
>> Thank you, it's ok for now.
>>
>>>
>>> May I use a version 3 of python?
>>>>
>>> You SDK supports both Python 2 and Python 3. If you are using the RPMs
>>> make sure to install the 'python3-ovirt-engine-sdk4' package.
>>>
>>
>> python3-ovirt-engine-sdk4 doesn't exist in repos, only
>> python-ovirt-engine-sdk4
>> Thanks to your explanations, I begin to understand the philosophy of this
>> sdk, it's far different from sdk3.
>> What's was wrong with the v3, what was the motivation to write a new
>> version?
>> Will it be possible to use the old sdk3 (manually installed) for old
>> scripts in ovirt 4.2 ?
>>
>>
>>> Note that both are supported, but Python 3 doesn't get a lot of
>>> attention yet, so you may find issues. If you find any issue with Python
>>> 3 let as know, as we are committed to make it work.
>>>
>>> # Remove the snapshot:
>>>>> snap_service = snaps_service.snap_service(snap.id)
>>>>> snap_service.remove()
>>>>>
>>>>> I saw an example into the ansible [ working ] way to do the same thing
>>>>>> and I found this :
>>>>>> snapshot =
>>>>>> snapshots_service.snapshot_service(module.params['snapshot_id']).get()
>>>>>>
>>>>>>
>>>>>> How can I get this working with sdk, I mean giving snapshot_id as a
>>>>>> parameter?
>>>>>>
>>>>>>
>>>>>> Also the complete reference documentation of the Python SDK is
>>>>>>> available
>>>>>>> here:
>>>>>>>
>>>>>>> http://ovirt.github.io/ovirt-engine-sdk/v4.0/4.0.3/index.html
>>>>>>>
>>>>>>> There also SDKs for Ruby and Java, in case Python is not your
>>>>>>> preferred
>>>>>>> language:
>>>>>>>
>>>>>>> Ruby:
>>>>>>> https://github.com/oVirt/ovirt-engine-sdk-ruby/tree/master/sdk
>>>>>>> https://github.com/oVirt/ovirt-engine-sdk-ruby/tree/master/
>>>>>>> sdk/examples
>>>>>>> http://www.rubydoc.info/gems/ovirt-engine-sdk
>>>>>>>
>>>>>>> Java:
>>>>>>> https://github.com/oVirt/ovirt-engine-sdk-java/tree/master/sdk
>>>>>>>
>>>>>>> https://github.com/oVirt/ovirt-engine-sdk-java/tree/master/
>>>>>>> sdk/src/test/java/org/ovirt/engine/sdk4/examples
>>>>>>>
>>>>>>>
>>>>>>> http://www.javadoc.io/doc/org.ovirt.engine.api/sdk
>>>>>>>
>>>>>>> --
>>>>>>>> Nicolas ECARNOT
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Users mailing list
>>>>>>>> Users at ovirt.org <mailto:Users at ovirt.org>
>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>> <http://lists.ovirt.org/mailman/listinfo/users>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Users mailing list
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>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>> Users mailing list
>>>>>>> Users at ovirt.org
>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>
>>>>>>
>>
> --
> Nathanaël Blanchet
>
> Supervision réseau
> Pôle Infrastrutures Informatiques
> 227 avenue Professeur-Jean-Louis-Viala
> 34193 MONTPELLIER CEDEX 5
> Tél. 33 (0)4 67 54 84 55
> Fax 33 (0)4 67 54 84 14
> blanchet at abes.fr
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
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