<![CDATA[Monitor qemu-kvm processes]]>Hi,

I'm facing a problem where I need to monitor the availability of a number of qemu-kvm processes (virtual machines) in Linux.

Normally you can gather statistics by for example defining: Process.CPUTime(qemu-kvm) but what if I have a number of qemu-kvm processes that I'd like to monitor individually? The only way to tell the processes a part is by --name XXXX attribute, which states the virtual machines name and/or id.

I guess the ideal scenario would be to setup the monitoring and DCI collection on a cluster-object and associate all the qemu-kvm hosts underneath it, then the monitoring and the stats would keep collecting even if a virtual machine is migrate to a different host. But my problem is that I can't filter running processes by attributes, or at least, I haven't found out how...

Hopefully someone can give me a hint in which way to go, thanks!

Anders

]]>https://forum.netxms.org/topic/2101/monitor-qemu-kvm-processesRSS for NodeFri, 13 Nov 2026 07:23:59 GMTFri, 04 Jan 2013 13:25:08 GMT60<![CDATA[Reply to Monitor qemu-kvm processes on Tue, 26 Mar 2013 07:14:06 GMT]]>Hi mrugani,

This sounds more of an Qemu related question than NetXMS related, but I'll give it a try.

Are you using some sort of management wrapper such as: libvirt (virsh) or similar to manage your virtual machines? or are you using the native Qemu-monitor to migrate your virtual machines?

]]>https://forum.netxms.org/post/9996https://forum.netxms.org/post/9996Tue, 26 Mar 2013 07:14:06 GMT<![CDATA[Reply to Monitor qemu-kvm processes on Wed, 20 Mar 2013 10:29:58 GMT]]>Hi, I am also working on qemu.
I want to get all active qemu processes running on host.
I tried using 'top | grep qemu' , i got all qemu processes.
But when I migrate a VM from hostA to hostB , I can still find its entry on hostA.
Did you come across this? Please help.

]]>https://forum.netxms.org/post/9959https://forum.netxms.org/post/9959Wed, 20 Mar 2013 10:29:58 GMT<![CDATA[Reply to Monitor qemu-kvm processes on Sun, 06 Jan 2013 21:29:32 GMT]]>For counting processes there are separate parameter Process.CountEx, which has two arguments - process name and command line, both are regular expressions.

Wiki is supposed to be most up-to-date information source, but unfortunately it still missing lot of information, including detailed description of agent parameters. We are updating wiki, but it's a slow process.

Best regards,
Victor

]]>https://forum.netxms.org/post/9250https://forum.netxms.org/post/9250Sun, 06 Jan 2013 21:29:32 GMT<![CDATA[Reply to Monitor qemu-kvm processes on Fri, 04 Jan 2013 17:01:41 GMT]]>Great news, thank you Victor! Does the Process.Count() work in a similar way?

Btw, what is the most up to date source for reference information for all supported attributes for a command such as: Process.Count() or Process.CPUTime() ? I haven't been able to find any related information in the wiki.

]]>https://forum.netxms.org/post/9248https://forum.netxms.org/post/9248Fri, 04 Jan 2013 17:01:41 GMT<![CDATA[Reply to Monitor qemu-kvm processes on Fri, 04 Jan 2013 14:58:39 GMT]]>Hi!

You can specify command line filter in all Process.* parameters. Full syntax of Process.CPUTime (and others Process.*) is following:

Process.CPUTime(process, type, cmdline)

Where

process - process name. If cmdline is not given, only processes with matched name will be counted and read. If cmdline is given, process interpreted as regular expression.
type    - representation type (meaningful when more than one process with the same name exists). Valid values are:
        min - minimal value among all processes named <process>
        max - maximal value among all processes named <process>
        avg - average value for all processes named <process>
        sum - sum of values for all processes named <process>
cmdline  - command line (regular expression to match).

So to match all processes named qemu-kvm with word test in command line, you can use

Process.CPUTime(^qemu-kvm$, sum, test)

Don't forget that both process name and command line are regular expressions when extended format is used, so if you use "qemu-kvm" as process name (without ^ and $), processes contained this in the name (like qemu-kvm2) will also be matched.

Best regards,
Victor

]]>https://forum.netxms.org/post/9247https://forum.netxms.org/post/9247Fri, 04 Jan 2013 14:58:39 GMT