Ovirt : How to shutdown/stop or start virtual machines (VMs) in ovirt DC automatically using python/ovirt- sdk ? [Part 1]

APIURL=”https://myrhevm.humblec.com/api” APIUSER=”admin@internal” APIPASS=”somepassword” CAFILE=”/root/ca.crt” LOGFILENAME=”/tmp/shutdown_vms_dc.log”

Here is the copy of the program:

#! /usr/bin/python

# Author: Humble Chirammal # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# Please make sure you are changing below parameters in api :

#url =”Your ovirt engine api url” #username =”user to access the api” #password =”password of above user” #ca_file =”location of ca cert file”

from ovirtsdk.api import API from ovirtsdk.xml import params from threading import Thread import time import logging

#Configure

APIURL=”https://myrhevm.humblec.com/api” APIUSER=”admin@internal” APIPASS=”somepassword” CAFILE=”/root/ca.crt” LOGFILENAME=”/tmp/shutdown_vms_dc.log”

threads=[] failedVms=[]

logging.basicConfig(level=logging.DEBUG, format=’%(asctime)s %(levelname)s %(message)s’, filename=LOGFILENAME, filemode=’w’) def start_vms(vmObj): logging.info(‘Thread to stop %s’, vmObj.name) try: vmObj.stop() #time.sleep(5) except Exception as e: logging.debug(‘Exception caught on VM ( %s) stop:\n%s’ % (vmObj.name, str(e))) failedVms.append(vmObj.name) if __name__ == “__main__”: try: api = API(url=APIURL, username=APIUSER, password=APIPASS, ca_file=CAFILE) print ‘Connected to RHEVM API %s Successfully’ % APIURL logging.info ( ‘Successfully Connected to %s’ % APIURL) try: print ‘ \n I am logging in %s \n’ % LOGFILENAME vmsList = api.vms.list() for i in vmsList: print i.name if i.status.state != ‘down’: logging.warning(‘%s is not down, trying to stop it’ % i.name) threadMe = Thread(target=start_vms, args=[i]) threadMe.start() threads.append(threadMe) except Exception as e: logging.debug(‘Error:\n%s’ % str(e))

logging.warning (‘No of VMs to stop : %s’ % len(threads)) print ‘No of VMs to stop: %s’ % len(threads) for th in threads: logging.info (‘Waiting for %s to join’ % th) th.join (30) if not th.isAlive(): logging.info (‘Thread : %s terminated’ % (th.getName()))

else: logging.debug( ‘Thread : %s is still alive, you may check this task..’ % (th)) logging.debug (‘ Below Vms failed to stop with an exception:%s’ % (failedVms)); api.disconnect()

except Exception as ex: logging.debug(‘Unexpected error: %s’ % ex)

Ex: [root@ ~]# python start_all_down_vms.py

I am logging in /tmp/start_vms_dc.log

vm1 vm2 IPA mailserver

No of VMs to start: 4

As you can see above, the program logged better inside ‘/tmp/start_vms_dc.log’

[root@ ~]# cat /tmp/start_vms_dc.log

2013-10-07 08:31:19,625 WARNING vm1 is not up, trying to start it 2013-10-07 08:31:19,626 INFO Thread to start vm1 2013-10-07 08:31:19,626 WARNING vm2 is not up, trying to start it 2013-10-07 08:31:19,628 WARNING IPA is not up, trying to start it 2013-10-07 08:31:19,627 INFO Thread to start vm2 2013-10-07 08:31:19,629 INFO Thread to start IPA 2013-10-07 08:31:19,629 WARNING mailserver is not up, trying to start it 2013-10-07 08:31:19,634 WARNING No of VMs to start : 4 2013-10-07 08:31:19,634 INFO Waiting for to join 2013-10-07 08:31:19,634 INFO Thread to start mailserver 2013-10-07 08:31:19,954 DEBUG Exception caught on VM ( vm2) start:

status: 400 reason: Bad Request detail: Cannot run VM without at least one bootable disk. Alternatives: -Create a disk for this VM, and rerun the VM. -Change the boot sequence using the Edit VM command (Boot Option Sub-Tab). -Use the Run-Once command to select a different boot option and rerun the VM. 2013-10-07 08:31:20,249 DEBUG Exception caught on VM ( IPA) start:

status: 400 reason: Bad Request detail: Cannot run VM. There are no available running Hosts with sufficient memory in VM’s Cluster . 2013-10-07 08:31:23,309 INFO Thread : Thread-1 terminated 2013-10-07 08:31:23,309 INFO Waiting for to join 2013-10-07 08:31:23,309 INFO Thread : Thread-2 terminated 2013-10-07 08:31:23,309 INFO Waiting for to join 2013-10-07 08:31:23,309 INFO Thread : Thread-3 terminated 2013-10-07 08:31:23,309 INFO Waiting for to join 2013-10-07 08:31:23,309 INFO Thread : Thread-4 terminated 2013-10-07 08:31:23,309 DEBUG Below Vms failed to start with an exception:[‘vm2’, ‘IPA’]