On Mon, Aug 07, 2017 at 01:15:45PM +0530, swaroop sp wrote:

Hi,

I am trying to check if a domain exists by using the libvirt python API *"lookupbyname()*". If the domain does not exist, it prints an error message on the console saying "*Domain not found*".

I need the errors or logs only in syslog. I have tried redirecting stderr and stdout. But, it doesn't have any effect. I have also tried playing around with the libvirt logging settings described in https://libvirt.org/logging.html . No effect again. "stdio_handler" flag in /etc/libvirt/qemu.conf is set to "file" as well.

Following is my test code:

import os, sysimport libvirt conn = libvirt.open('qemu:///system') # Find the application in the virsh domaintry: sys.stdout = open(os.devnull, "w") sys.stderr = open(os.devnull, "w") dom = conn.lookupByName('abcd') sys.stdout = sys.__stdout__ sys.stderr = sys.__stderr__except Exception as e: syslog.syslog (syslog.LOG_ERR, 'Could not find the domain. ERROR: %s.' % (e)) sys.stdout = sys.__stdout__ sys.stderr = sys.__stderr__

Output:

$ python test.py libvirt: QEMU Driver error : Domain not found: no domain with matching name 'abcd' $

Is there a way to avoid this console print?

Use this: def libvirt_callback(userdata, err): pass libvirt.registerErrorHandler(f=libvirt_callback, ctx=None) Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|