On Fri, Jan 6, 2017 at 3:51 PM, Nathanaël Blanchet <blanchet@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@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@ecarnot.net >> <mailto:nicolas@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@ovirt.org <mailto:Users@ovirt.org> >> http://lists.ovirt.org/mailman/listinfo/users >> <http://lists.ovirt.org/mailman/listinfo/users> >> >> >> >> >> _______________________________________________ >> Users mailing list >> Users@ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> >> _______________________________________________ > Users mailing list > Users@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@abes.fr
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