Re: [ovirt-users] Script to determine which Hypervisor a VM is running on

Wednesday, 18 June 2014

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Hi Citros,

I have this Python script I wrote to get VM information from Red Hat
Virtualization which I believe should work for Ovirt as well. I should
point out that I'm not a Python user normally and actually hate the
language. If the formatting gets screwed I can email you a copy.

To use it either run it without parameters to get a list of all VMs or
run it with "-n vm_name" (case sensitive) to list just a single VM.

[code]
#! /usr/bin/python

from __future__ import division
from ovirtsdk.api import API
from ovirtsdk.xml import params
from optparse import OptionParser
import os
import sys
import urllib

## Edit the following three items as necesary
rhevman = 'https://your_rhev_manager'
user = 'admin@internal'
password = 'user_password'

cert = '/tmp/rhevm.cer'

## Format numbers
def factor(value):
    str = 'Bytes'
    if (value >= 1024):
        value /= 1024
        str = 'KB'
    if (value >= 1024):
        value /= 1024
        str = 'MB'
    if (value >= 1024):
        value /= 1024
        str = 'GB'
    return '%s %s' % (('%f' %
value).rstrip('0').rstrip('.'), str)

## Ensure we have the server ca certificate
if (not os.path.isfile(cert)):
    print "Certificate file not found. Trying to download it."
    urllib.urlretrieve (rhevman + '/ca.crt', cert)

## Find out what is being asked for
vmname = ''
parser = OptionParser()
parser.add_option('-n', '--name', dest='vmname',
default='',
action='store', help='Specify the name of a single VM (case sensitive)')
(options, args) = parser.parse_args()
vmname = options.vmname
hostnames = {}

try:
    ## Connect to the API
    api = API (url=rhevman, username=user, password=password, ca_file=cert)

    try:
        ## Get the list of hypervisors for use later on
        for host in api.hosts.list():
            hostnames[host.id] = host.name

        ## Are we after a single VM or the entire list?
        if (len(vmname) > 0):
            print 'Retrieving information for %s' % vmname
            vmsList = api.vms.list(query = 'name=%s' % vmname)
        else:
            print 'Retrieving information for all VMs'
            vmsList = api.vms.list(max = -1)
            print 'Found %d VMs' % len(vmsList)

        # Get the VM details
        for instance in vmsList:
            address=[]
            print '\nVM: %s' % instance.name
            host = instance.get_host()
            print '\tState: %s\n\tDescription: %s\n\tComment: %s' %
(instance.status.state, instance.description, instance.comment)

            if (host):
                    print '\tHost: %s' % hostnames[host.id]

            createtime = instance.get_creation_time()
            print '\tCreated: %s' % createtime
            starttime = instance.get_start_time()
            print '\tStarted: %s' % starttime
            cpu = instance.get_cpu()
            print '\tCPU: %s (%s sockets, %s cores)' %
(cpu.topology.sockets*cpu.topology.cores, cpu.topology.sockets,
cpu.topology.cores)
            ram = instance.get_memory()
            print '\tRAM: %s' % factor(ram)
            disks = instance.get_disks().list()

            for disk in disks:
                    print '\tDisk: %s %s' % (disk.name, factor(disk.size))

            if ((instance.status.state == 'up') and
instance.get_guest_info()):
                vmnics= instance.get_nics().list()
                ips = instance.get_guest_info().get_ips().get_ip()

                for card in vmnics:
                    print '\tInterface: %s, MAC address: %s' %
(card.name, card.mac.address)

                for ip in ips:
                    address.append(ip.get_address())
                    print '\tIP: %s' % ( ip.get_address())

    except Exception as e:
        print ' Exception:\n%s' % str(e)

    api.disconnect()

except Exception as ex:
    print 'Unexpected error: %s' % ex
[/code]

regards,
John

On 18/06/14 00:59, Citros Airv wrote:
...
 Hi,

 I'm checking to see if someone has a script to determine where a VM is
 running preferably with the shell?

 Thanks,

 VS

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    Hi Citros,<br>
    <br>
    I have this Python script I wrote to get VM information from Red Hat
    Virtualization which I believe should work for Ovirt as well. I
    should point out that I'm not a Python user normally and actually
    hate the language. If the formatting gets screwed I can email you a
    copy.<br>
    <br>
    To use it either run it without parameters to get a list of all VMs
    or run it with "-n vm_name" (case sensitive) to list just a single
    VM.<br>
    <br>
    [code]<br>
    #! /usr/bin/python<br>
    <br>
    from __future__ import division<br>
    from ovirtsdk.api import API<br>
    from ovirtsdk.xml import params<br>
    from optparse import OptionParser<br>
    import os<br>
    import sys<br>
    import urllib<br>
    <br>
    ## Edit the following three items as necesary<br>
    rhevman = '<a class="moz-txt-link-freetext"
href="https://your_rhev_manager">https://your_rhev_manager</a>'<br>
    user = 'admin@internal'<br>
    password = 'user_password'<br>
    <br>
    cert = '/tmp/rhevm.cer'<br>
    <br>
    ## Format numbers<br>
    def factor(value):<br>
    &nbsp;&nbsp;&nbsp; str = 'Bytes'<br>
    &nbsp;&nbsp;&nbsp; if (value &gt;= 1024):<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; value /= 1024<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; str =
'KB'<br>
    &nbsp;&nbsp;&nbsp; if (value &gt;= 1024):<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; value /= 1024<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; str =
'MB'<br>
    &nbsp;&nbsp;&nbsp; if (value &gt;= 1024):<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; value /= 1024<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; str =
'GB'<br>
    &nbsp;&nbsp;&nbsp; return '%s %s' % (('%f' %
value).rstrip('0').rstrip('.'), str)<br>
    <br>
    ## Ensure we have the server ca certificate<br>
    if (not os.path.isfile(cert)):<br>
    &nbsp;&nbsp;&nbsp; print "Certificate file not found. Trying to
download it."<br>
    &nbsp;&nbsp;&nbsp; urllib.urlretrieve (rhevman + '/ca.crt',
cert)<br>
    <br>
    ## Find out what is being asked for<br>
    vmname = ''<br>
    parser = OptionParser()<br>
    parser.add_option('-n', '--name', dest='vmname',
default='',
    action='store', help='Specify the name of a single VM (case
    sensitive)')<br>
    (options, args) = parser.parse_args()<br>
    vmname = options.vmname<br>
    hostnames = {}<br>
    <br>
    try:<br>
    &nbsp;&nbsp;&nbsp; ## Connect to the API<br>
    &nbsp;&nbsp;&nbsp; api = API (url=rhevman, username=user,
password=password,
    ca_file=cert)<br>
    <br>
    &nbsp;&nbsp;&nbsp; try:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ## Get the list of
hypervisors for use later on<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; for host in
api.hosts.list():<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; hostnames[host.id] = host.name<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ## Are we after a single
VM or the entire list?<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; if (len(vmname) &gt;
0):<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print 'Retrieving information for %s' %
vmname<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; vmsList = api.vms.list(query = 'name=%s' %
vmname)<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; else:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print 'Retrieving information for all
VMs'<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; vmsList = api.vms.list(max = -1)<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print 'Found %d VMs' % len(vmsList)<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; # Get the VM
details<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; for instance in
vmsList:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; address=[]<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\nVM: %s' % instance.name<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; host = instance.get_host()<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tState: %s\n\tDescription: %s\n\tComment:
%s' %
    (instance.status.state, instance.description, instance.comment)<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; if (host):<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tHost: %s' % hostnames[host.id]<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; createtime = instance.get_creation_time()<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tCreated: %s' % createtime<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; starttime = instance.get_start_time()<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tStarted: %s' % starttime<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; cpu = instance.get_cpu()<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tCPU: %s (%s sockets, %s cores)' %
    (cpu.topology.sockets*cpu.topology.cores, cpu.topology.sockets,
    cpu.topology.cores)<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; ram = instance.get_memory()<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tRAM: %s' % factor(ram)<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; disks = instance.get_disks().list()<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; for disk in disks:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tDisk: %s %s' % (disk.name,
    factor(disk.size))<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; if ((instance.status.state == 'up') and
    instance.get_guest_info()):<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; vmnics=
instance.get_nics().list()<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ips =
instance.get_guest_info().get_ips().get_ip()<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; for card in
vmnics:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tInterface: %s, MAC address: %s' %
    (card.name, card.mac.address)<br>
    <br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; for ip in ips:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; address.append(ip.get_address())<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; print '\tIP: %s' % ( ip.get_address())<br>
    <br>
    &nbsp;&nbsp;&nbsp; except Exception as e:<br>
    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; print '
Exception:\n%s' % str(e)<br>
    <br>
    &nbsp;&nbsp;&nbsp; api.disconnect()<br>
    <br>
    except Exception as ex:<br>
    &nbsp;&nbsp;&nbsp; print 'Unexpected error: %s' % ex<br>
    [/code]<br>
    <br>
    regards,<br>
    John<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 18/06/14 00:59, Citros Airv
wrote:<br>
    </div>
    <blockquote
cite="mid:CAGiV8-yQ_RJy_0umpowH8SBDRNs0rC4531GmYMmNtc=9rFJHuw@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi,
        <div><br>
        </div>
        <div>I'm checking to see if someone has a script to determine
          where a VM is running preferably with the shell?</div>
        <div><br>
        </div>
        <div>Thanks,</div>
        <div><br>
        </div>
        <div>VS</div>
      </div>
      <br clear="all">
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Re: [ovirt-users] Script to determine which Hypervisor a VM is running on