Log Guidelines¶

Levels Guidelines¶

During Kilo release cycle Sahara community defined the following log levels:

Debug: Shows everything and is likely not suitable for normal production operation due to the sheer size of logs generated (e.g. scripts executions, process execution, etc.).
Info: Usually indicates successful service start/stop, versions and such non-error related data. This should include largely positive units of work that are accomplished (e.g. service setup, cluster start, successful job execution).
Warning: Indicates that there might be a systemic issue; potential predictive failure notice (e.g. job execution failed).
Error: An error has occurred and an administrator should research the event (e.g. cluster failed to start, plugin violations of operation).
Critical: An error has occurred and the system might be unstable, anything that eliminates part of Sahara’s intended functionality; immediately get administrator assistance (e.g. failed to access keystone/database, plugin load failed).

Now Sahara uses string formatting defined in PEP 3101 for logs.

LOG.warning(_LW("Incorrect path: {path}").format(path=path))

All log levels except Debug requires translation. None of the separate cli tools packaged with Sahara contain log translations.