[Users] Python script retrieving MACs
Hi, Im currently making a script using the Python SDK to retrieve a list of VM names + their MAC address. I currently came up with this 17 vm = api.vms.list() 18 19 20 for item in vm: 21 hostname = item.get_name() 22 nic = api.vms.get(name=hostname).nics.list() 23 for net in nic: 24 nicname = net.mac.get_address() 25 print "%s" % hostname 26 print "%s" % nicname I've noticed that retrieving the nic list during the iteration does a logon each time which slows thing down dramatically. Is there a better way to get the NICs from a list of VMs? Regards, Vincent
----- Original Message -----
From: "Vincent Van der Kussen" <vincent@vanderkussen.org> To: users@ovirt.org Sent: Wednesday, December 5, 2012 10:39:02 AM Subject: [Users] Python script retrieving MACs
Hi,
Im currently making a script using the Python SDK to retrieve a list of VM names + their MAC address. I currently came up with this
17 vm = api.vms.list() 18 19 20 for item in vm: 21 hostname = item.get_name() 22 nic = api.vms.get(name=hostname).nics.list() 23 for net in nic: 24 nicname = net.mac.get_address() 25 print "%s" % hostname 26 print "%s" % nicname
I've noticed that retrieving the nic list during the iteration does a logon each time which slows thing down dramatically. Is there a better way to get the NICs from a list of VMs?
Michael P wrote in another thread : ##if you using > 3.1 backend, you should be using persistent authentication in api, ##this way you'll have to pass JSESSIONID and login will happen only on first request. Michael , please elaborate on that
Regards, Vincent
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On 12/06/2012 02:22 AM, Eli Mesika wrote:
----- Original Message -----
From: "Vincent Van der Kussen" <vincent@vanderkussen.org> To: users@ovirt.org Sent: Wednesday, December 5, 2012 10:39:02 AM Subject: [Users] Python script retrieving MACs
Hi,
Im currently making a script using the Python SDK to retrieve a list of VM names + their MAC address. I currently came up with this
17 vm = api.vms.list() 18 19 20 for item in vm: 21 hostname = item.get_name() 22 nic = api.vms.get(name=hostname).nics.list() 23 for net in nic: 24 nicname = net.mac.get_address() 25 print "%s" % hostname 26 print "%s" % nicname
I've noticed that retrieving the nic list during the iteration does a logon each time which slows thing down dramatically. Is there a better way to get the NICs from a list of VMs?
Michael P wrote in another thread :
##if you using > 3.1 backend, you should be using persistent authentication in api, ##this way you'll have to pass JSESSIONID and login will happen only on first request.
Michael , please elaborate on that
persistent authentication available since 3.1 api, if your backend is 3.1 or higher, sdk will use it by default, otherwise authentication happens peer request.
Regards, Vincent
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Michael Pasternak RedHat, ENG-Virtualization R&D
On 12/06/2012 10:08 AM, Michael Pasternak wrote:
On 12/06/2012 02:22 AM, Eli Mesika wrote:
----- Original Message -----
From: "Vincent Van der Kussen"<vincent@vanderkussen.org> To: users@ovirt.org Sent: Wednesday, December 5, 2012 10:39:02 AM Subject: [Users] Python script retrieving MACs
Hi,
Im currently making a script using the Python SDK to retrieve a list of VM names + their MAC address. I currently came up with this
17 vm = api.vms.list() 18 19 20 for item in vm: 21 hostname = item.get_name() 22 nic = api.vms.get(name=hostname).nics.list()
23 for net in nic: 24 nicname = net.mac.get_address() 25 print "%s" % hostname 26 print "%s" % nicname You print here only one mac per vm although you iterate over all the vm's nics, I think that the prints should be indented under the for loop too.
I've noticed that retrieving the nic list during the iteration does a logon each time which slows thing down dramatically. Is there a better way to get the NICs from a list of VMs? Michael P wrote in another thread :
##if you using> 3.1 backend, you should be using persistent authentication in api, ##this way you'll have to pass JSESSIONID and login will happen only on first request.
Michael , please elaborate on that
BTW, you already have list of vm objects so you can use item.nics.list() instead of asking for the object again from the backend. persistent authentication available since 3.1 api, if your backend is 3.1 or higher, sdk will use it by default, otherwise authentication happens peer request.
Regards, Vincent
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Thanks, Rami Vaknin, QE @ Red Hat, TLV, IL.
participants (4)
-
Eli Mesika -
Michael Pasternak -
Rami Vaknin -
Vincent Van der Kussen