[libvirt-users] Avoiding console prints by Libvirt Qemu python APIs
Daniel P. Berrange
berrange at redhat.com
Mon Aug 7 12:07:36 UTC 2017
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
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