The Telemetry service has similar log settings as the other OpenStack
services. Multiple options are available to change the target of
logging, the format of the log entries and the log levels.

The log settings can be changed in ceilometer.conf. The
list of configuration options are listed in the logging configuration
options table in the Telemetry
section in the OpenStack Configuration Reference.

By default stderr is used as standard output for the log
messages. It can be changed to either a log file or syslog. The
debug and verbose options are also set to
false in the default settings, the default log levels of the
corresponding modules can be found in the table referred above.