Logging in the command-line interface

When invoked without any specific option, any pglift command will log messages to the standard error in form of <LEVEL> <message> lines. The default threshold for displayed messages is INFO so that messages with this severity or higher are displayed but those with a lower severity (like DEBUG messages) are not. To control this threshold, the -L, --log-level should be used.

To log messages to a file, the -l, --log-file LOGFILE should be used.

When an unexpected error occurs during the invocation of a pglift command (i.e. something that is not a user error but may be a bug), pglift will write all messages logged during this invocation to a temporary debug file and finally display its path in standard error:

$ pglift ...
ERROR    an unexpected error occurred
         Traceback (most recent call last):
         OSError: ...
Error: an unexpected error occurred, this is probably a bug;
    details can be found at /tmp/pglift/1714116611.5114818.log

This debug file is meant for troubleshooting and helping developers to fix bugs. It will not persist if the command exits in an expected way (which may be a success and a known/user error).

Auditing change operations through the command-line interface

The command-line interface may be configured to record log messages from change operations, i.e. all events occurring when changing (creating / updating / deleting) a resource managed by pglift (i.e. an instance, a database object, etc.). Read operations (such as listing objects, getting object details or exporting data) are not recorded in a so-called audit log.

This needs to be enabled through site settings by defining an audit key in the cli section, e.g.:

     path: '/var/log/pglift/audit.log'


This feature is provided on a provisional basis waiting for further users feedback before eventually getting stabilized.