Question

The following script:

#!/usr/bin/env python
from   fabric.api import env, run
import logging

logging.getLogger().setLevel(logging.INFO)

env.host_string = "%s@%s:%s" % ('myuser', 'myhost', '22')
res = run('date', pty = False)

Produces the following output:

[myuser@myhost:22] run: date
No handlers could be found for logger "ssh.transport"
[myuser@myhost:22] out: Thu Mar 29 16:15:15 CEST 2012

I would like to get rid of this annoying error message: No handlers could be found for logger "ssh.transport"
The problem happens when setting the log level (setLevel).

How can I solve this? I need to set the log level, so skipping that won’t help.

Answer 1

My hack is ugly but works:

# This is here to avoid the mysterious messages: 'No handlers could be found for logger "ssh.transport"'

class MyNullHandler(logging.Handler):
    def emit(self, record):
        pass

bugfix_loggers = { }
def bugfix(name):
    global bugfix_loggers
    if not name in bugfix_loggers:
        # print "Setting dummy logger for '%s'" % (name)
        logging.getLogger(name).addHandler(MyNullHandler())
        bugfix_loggers[name] = True