If you need to continuously track libvirt metrics, you might want to install Host sFlow agents on each of your KVM hypervisors:
http://host-sflow.sourceforge.net/ The Host sFlow agent is a lightweight daemon that links to the libvirt library on the hypervisor and sends hypervisor and VM metrics using the sFlow protocol to a central collector. You could use an sFlow analyzer like Ganglia to record and display the metrics. http://blog.sflow.com/2012/01/using-ganglia-to-monitor-virtual.html Alternatively, you could use the sflowtool to convert sFlow to text and write a Perl/Python/Awk... script to generate your report. http://blog.sflow.com/2011/12/sflowtool.html Are you also using Open vSwitch? I you are, the Host sFlow agent can configure sFlow monitoring to add statistics for each of the vNICs as well as packet flows between the VMs etc. http://blog.sflow.com/2010/10/sflowtrend-adds-server-performance.html On Wed, Sep 25, 2013 at 7:10 AM, Sam Giraffe <s...@giraffetech.biz> wrote: > Hi, > > I am trying to create a report across all my KVM hypervisors using libvirt > API and I need some assistance in figuring out the right API calls. My > report will contain the total available memory, CPU, disk across all > hypervisors, versus the amount used by the virtual machines. This report > will help figure out if we are running low on hypervisor disk, CPU or > memory and if we need to add more. > > I can't find the libvirt API call to get system info, such as total memory > in the system, free memory, total disk space, available disk space, etc. > There is virDomainInfo which shows memory total and free about a particular > VM, I guess I can use active/inactive domain list and then use > virDomainInfo on each of the VM's, but that does not give me hypervisor > stats. I am wondering if I will have to enable SNMP and use that to get > hypervisors stats. > > I am creating this report remotely on a reporting machine which will > connect to each hypervisor using the libvirt API using one of the remote > libvirt connections available. > > Thanks > > _______________________________________________ > libvirt-users mailing list > libvirt-users@redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users >
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