I am trying to connect to a server running esx and collect system metrics like cpu usage, network and disk iops. I am able to establish the connection successfully and obtain VM information such as ids, domain names, config xml etc. But I am unable to collect statistics.
I am using the python interface and if I do ,
conn=libvirt.openAuth(uri, auth, 0)
dom-conn.lookupByID(id) // Where id is the domain id of the vms
netstats=dom.interfaceStats(interface)
gives an error libvirt.libvirtError: this function is not supported by the connection driver: virDomainInterfaceStats
The same goes for block stats. For the cpu, I used,
cpu=dom.info()[4]
but, that always returns 0 (I thought it was cumulative and returns a huge value)
I have used similar scripts with xen and kvm and it worked well. Can someone tell me what mistake I am doing or if the driver doesnt support these functions, is there any other way of getting the stats ?? Thank you.
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Regards,
Sethuraman Subbiah
Graduate Student - NC state University
M.S in Computer Science
