[Xen-API] newbie: get_guest_metrics result MESSAGE_METHOD_UNKNOWN

[Akira Akira <akira.lists.1948@xxxxxxxxx>]

Hi All,

Although I already searched the mailing list archives to try to find a solution, I could only find people reporting this error without a solution.

I am trying to get the guest metrics to monitor the guest for memory shortage, for example. So here is what I executed (in python):

1) 
> session = XenAPI.Session(url)
> session.xenapi.login_with_password(username, password)
> vms = session.xenapi.VM.get_all_records()
> for vm in vms:
>         g_metrics = session.xenapi.VM.get_guest_metrics(vm)

2)

session = XenAPI.Session(url)
session.xenapi.login_with_password(username, password)
vms = session.xenapi.VM.get_all_records()
for vm in vms:
        metrics = session.xenapi.VM.get_metrics(vm)
        g_metrics = session.xenapi.VM_guest_metrics.get_record(metrics)

And as a result I am getting the same following error for both codes:

XenAPI.Failure: MESSAGE_METHOD_UNKNOWN

The error is always in the last line (the one in which I try to obtain a guest metrics and assign it to g_metrics).

I am referring to this page to use the Xen API: http://wiki.xensource.com/xenwiki/XenApi

The documentation I am using is: API Revision 1.1, Date: 16th August 2007. Is there a more recent documentation? Am I using the wrong documentation?

Thank you in advance.

                     Akira

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