[ops][nova]Logging in nova and other openstack projects

Jay Pipes jaypipes at gmail.com
Tue May 7 13:02:53 UTC 2019

On 05/06/2019 05:56 PM, Jean-Philippe Méthot wrote:
> Hi,
> We’ve been modifying our login habits for Nova on our Openstack setup to 
> try to send only warning level and up logs to our log servers. To do so, 
> I’ve created a logging.conf and configured logging according to the 
> logging module documentation. While what I’ve done works, it seems to be 
> a very convoluted process for something as simple as changing the 
> logging level to warning. We worry that if we upgrade and the syntax for 
> this configuration file changes, we may have to push more changes 
> through ansible than we would like to.

It's unlikely that the syntax for the logging configuration file will 
change since it's upstream Python, not OpenStack or Nova that is the 
source of this syntax.

That said, if all you want to do is change some or all package default 
logging levels, you can change the value of the CONF.default_log_levels 

The default_log_levels CONF option is actually derived from the oslo_log 
package that is used by all OpenStack service projects. It's default 
value is here:


So, if you don't want to mess with the standard Python logging conf, you 
can just change that CONF.default_log_levels option. Note that if you do 
specify a logging config file using a non-None CONF.log_config_append 
value, then all other logging configuration options (like 
default_log_levels) are ignored).


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