Hi everyone, I'm using the Havana release and I can see from the $PYTHONDIR/nova/openstack/common/log.py that the default loggers level are:

• 'amqplib=WARN',
• 'sqlalchemy=WARN',
• 'boto=WARN',
• 'suds=INFO',
• 'keystone=INFO',
• 'eventlet.wsgi.server=WARN'

From the web page of the Juno release, I can see other default logger levels:

• amqp=WARN,
• amqplib=WARN,
• boto=WARN,
• qpid=WARN,
• sqlalchemy=WARN,
• suds=INFO,
• oslo.messaging=INFO,
• iso8601=WARN,
• requests.packages.urllib3.connectionpool=WARN,
• urllib3.connectionpool=WARN, websocket=WARN,
• keystonemiddleware=WARN,
• routes.middleware=WARN,
• stevedore=WARN

So, the possible loggers are the ones that are listed in the configuration files, or there are other loggers that are not listed there? How can I find them?

I ask this, because I set debug = True and in the log files I can see that the messages come from modules like nova.api.openstack.wsgi, qpid.messaging, nova.osapi_compute.wsgi.server, nova.openstack.common.rpc.amqp etc..

I don't unsertand which logger print what type of message. For example, to remove all the debug messages that comes from the module nova.openstack.common.rpc.amqp, which logger level do I need to change? ampq or ampqlib? And if I want the nova.api.openstack.wsgi but not nova.osapi_compute.wsgi.server? It's not clear hot to control them and where they come from.

My problem is that I need to find several information by the logs, so I set the option debug=True but now I receive too much prints in the log files. The log files are constantly growing. I need to select only some of them. For instance I need to suppress the messages that come from qpid.messaging.io..., nova.openstack.common.rpc..., nova.osapi_compute.wsgi.server, etc..

but I need to store the debug messages that come from nova.api.openstack.wsgi, nova.compute.api,nova.scheduler.filter_scheduler, nova.virt, nova.openstack.common.processutils, etc..

So my questions are:

1. Are there more loggers than the default list includes?
2. For every logger that you know, what messages and from what modules does it print?
3. If I set the debug=True, are all the loggers level = debug automatically, or the log levels specified in the default_log_levels configuration option (in nova.conf) are not changed?

For more information about my doubts, please, ask me. Thank you a lot!