[Users] Rest-api to fetch the hosts details ( active vm's , CPU , Physical memory etc.)
Michael Pasternak
mpastern at redhat.com
Sun Mar 3 05:00:15 EST 2013
Hi Romil,
Not sure i understand, are you talking about quota resources allocation?
On 03/01/2013 11:03 AM, Romil Gupta wrote:
> Hi ..thanks for continuous help :)
>
> I have a query is their any way we can check how much Cores remaining in a cluster in Rhev-m before provisioning a VM ?
>
> coz after creating 5-10 VM's in a cluster if we create new VM then it shows exception like Cluster doesnt contains cores!
>
> Thanks .
> Romil
>
>
>
>
> On Tue, Feb 19, 2013 at 3:56 PM, Michael Pasternak <mpastern at redhat.com <mailto:mpastern at redhat.com>> wrote:
>
>
> Hi Romil,
>
> On 02/19/2013 11:22 AM, Romil Gupta wrote:
> > Hi Michael ,
> >
> >
> > Thanks for ur continuous help. I have one more query here ....
> >
> > I want to fetch the host elements like ..
> > Type
> > address
> > status
> > No. of CPUs
> > cpu->type
> > cpu -> name->topology->cores->sockets
> > memory
> > summary
> > version
> >
> > Is is the correct way of doing to get these details?
> >
> > hosts=api.hosts.list()
> > for host in hosts:
> > type=api.hosts.get(host.id <http://host.id> <http://host.id>).type
> > address=api.hosts.get(host.id <http://host.id> <http://host.id>).address
>
> no, please use getter methods instead as they're encapsulating attributes that may be
> called differently in python,
>
> for instance 'type' attribute in python renamed to 'type_' cause 'type' is preserved name.
>
> you can see all available get_X() methods by running code bellow:
>
> #> print [token for token in type(host.superclass).__dict__.keys() if token.startswith('get_')]
>
> >
> > I got some exception :
> > address=api.hosts.get(host.id <http://host.id> <http://host.id>).get_address()
> > AttributeError: 'NoneType' object has no attribute 'get_address'
>
> this can only happen if your host lookup has failed.
>
> >
> >
> > Please suggest me the correct way of doing it ....if have referred
> > https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Virtualization/3.1/html/Developer_Guide/chap-REST_API_Guide-Hosts.html
> >
> > Regards,
> > Romil
> >
> >
> >
> >
> >
> >
> > On Wed, Jan 30, 2013 at 6:50 PM, Michael Pasternak <mpastern at redhat.com <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com>>> wrote:
> >
> > On 01/30/2013 03:09 PM, Romil Gupta wrote:
> > > thanks for all your guidance , now I m able to fetch the details of a host using
> > > the below script :
> > >
> > > hosts=api.hosts.list()
> > > for host in hosts:
> > > print "host name--> %s id--->> %s \n"%(host.name <http://host.name> <http://host.name> <http://host.name> , host.id <http://host.id> <http://host.id>
> <http://host.id>)
> > > clusterid=api.hosts.get(host.name <http://host.name> <http://host.name> <http://host.name>).cluster.id <http://cluster.id> <http://cluster.id>
> <http://cluster.id>
> > > print clusterid
> > >
> > > hostname=api.hosts.get(host.name <http://host.name> <http://host.name> <http://host.name>)
> > > statistic=hostname.statistics.list()
> > > i=0
> > > while i < 14:
> > > print statistic[i].name
> > > print statistic[i].description
> > > print statistic[i].unit
> > > print statistic[i].values.value[0].datum
> > > i=i+1;
> > >
> > >
> > > summary=api.get_summary()
> > > print summary
> > >
> > > How I can print the summary , its only return the Object??
> >
> > this is summary object structure:
> >
> > <summary>
> > <vms>
> > <total></total>
> > <active></active>
> > </vms>
> > <hosts>
> > <total></total>
> > <active></active>
> > </hosts>
> > <users>
> > <total></total>
> > <active></active>
> > </users>
> > <storage_domains>
> > <total></total>
> > <active></active>
> > </storage_domains>
> > </summary>
> >
> > you can access properties directly, like this:
> > summary.hosts.active
> >
> > >
> > > Thanks,
> > > Romil
> > >
> > >
> > > On Wed, Jan 30, 2013 at 4:52 PM, Michael Pasternak <mpastern at redhat.com <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com>>
> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com>>>> wrote:
> > >
> > >
> > > Romil,
> > >
> > > On 01/30/2013 12:18 PM, Romil Gupta wrote:
> > > > Hi,
> > > >
> > > > Is this is a right way to get it ??
> > > >
> > > > statistics=params.Host(host.name <http://host.name> <http://host.name> <http://host.name> <http://host.name>).get_statistic()
> > >
> > > 1. first you need to fetch the host to see it's statistics (by doing params.Host(...) you creating
> > > host parameters holder which is needed for adding new host to the system)
> > >
> > > 2. get_x() getters used to access object attributes, while collections are exposed as properties, do
> > >
> > > 1. myhost = api.hosts.get(name="xxx")
> > > 2. myhost.statistics.list()
> > > 3. loop over returned collection of statistics to find what you're looking for
> > >
> > > - note, statistic objects are complex types, you can look for data at:
> > >
> > > statistics[i].unit // the unit of the holder data
> > > statistics[i].values.value[0].datum // actual data
> > >
> > > > print statistics
> > > >
> > > > summary=params.Host(host.name <http://host.name> <http://host.name> <http://host.name> <http://host.name>).get_summary()
> > >
> > > summary() is an api method, do:
> > >
> > > 1. api = API(url='', username='', password='')
> > > 2. api.get_summary()
> > >
> > >
> > > > print summary
> > > >
> > > >
> > > > Output is : none
> > > >
> > > > Thanks
> > > > Romil
> > > >
> > > >
> > > > On Wed, Jan 30, 2013 at 2:04 PM, Michael Pasternak <mpastern at redhat.com <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com
> <mailto:mpastern at redhat.com>> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com>>>
> > <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com>> <mailto:mpastern at redhat.com
> <mailto:mpastern at redhat.com> <mailto:mpastern at redhat.com <mailto:mpastern at redhat.com>>>>> wrote:
> > > >
> > > >
> > > > Hi Romil,
> > > >
> > > > On 01/30/2013 10:17 AM, Romil Gupta wrote:
> > > > > Hi all ,
> > > > >
> > > > > how I can get the hosts details like Active VM's ,
> > > >
> > > > host doesn't have running vms attribute, instead you
> > > > can see in the guest on which host it's running,
> > > >
> > > > general system summary you can see at api.get_summary()
> > > >
> > > > Number of CPU's , CPU name , CPU type ,
> > > >
> > > > these are host attributes
> > > >
> > > > Physical Memory (used , free ) , swap size and other parameters
> > > >
> > > > these are host.statistics attributes
> > > >
> > > > > using ovirt-engine-sdk-3.2.0.5-1.
> > > > >
> > > > >
> > > > >
> > > > > Regards,
> > > > > Romil
> > > > >
> > > > > --
> > > > > I don't wish to be everything to everyone, but I would like to be something to someone.
> > > >
> > > >
> > > > --
> > > >
> > > > Michael Pasternak
> > > > RedHat, ENG-Virtualization R&D
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > I don't wish to be everything to everyone, but I would like to be something to someone.
> > >
> > >
> > > --
> > >
> > > Michael Pasternak
> > > RedHat, ENG-Virtualization R&D
> > >
> > >
> > >
> > >
> > > --
> > > I don't wish to be everything to everyone, but I would like to be something to someone.
> >
> >
> > --
> >
> > Michael Pasternak
> > RedHat, ENG-Virtualization R&D
> >
> >
> >
> >
> > --
> > I don't wish to be everything to everyone, but I would like to be something to someone.
>
>
> --
>
> Michael Pasternak
> RedHat, ENG-Virtualization R&D
>
>
>
>
> --
> I don't wish to be everything to everyone, but I would like to be something to someone.
--
Michael Pasternak
RedHat, ENG-Virtualization R&D
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