* Explain the difference between a singleton and non-singleton type:

A single type can only be used once per host. 

(I don't see yet why this is important.)

** Reference 
   If a type is flagged as a singleton, it may be used only once per host. This is useful for types which can be used only once on a system. Singleton types do not take an object name as argument.
   (https://www.cdi.st/manual/latest/cdist-type.html?highlight=singleton)



* Explain the difference between the different verbosity levels

Verbosity levels are used to change the amount of information that is output on stdout about the configuration run.
I can be used for debugging, monitoring and scripting.


** Reference

# verbosity
#     Set verbosity level. Valid values are: 
#     ERROR, WARNING, INFO, VERBOSE, DEBUG, TRACE and OFF.

(https://www.cdi.st/manual/latest/cdist-configuration.html?highlight=verbosity)



* Logs (config run dumps per verbosity level)

** No -v

1lnu:/mnt/cephfs/infra/code.ungleich.ch/ungleich-learning-circle-balazs/balazs/dot-cdist$ cdist config -c . localhost

No output

** -v (INFO)

1lnu:/mnt/cephfs/infra/code.ungleich.ch/ungleich-learning-circle-balazs/balazs/dot-cdist$ cdist config -c . -v localhost
INFO: localhost: Starting configuration run
INFO: localhost: Finished successful run in 7.95 seconds

** -vv (VERBOSE)

1lnu:/mnt/cephfs/infra/code.ungleich.ch/ungleich-learning-circle-balazs/balazs/dot-cdist$ cdist config -c . -vv localhost
VERBOSE: cdist: version 6.5.4-32-g250161e4
INFO: localhost: Starting configuration run
VERBOSE: localhost: Running global explorers
VERBOSE: localhost: Running initial manifest /tmp/tmpec8j3nyk/421aa90e079fa326b6494f812ad13e79/data/conf/manifest/init
VERBOSE: localhost: Preparing object __my_computer/

...

VERBOSE: localhost: Running object __package/zsh
VERBOSE: localhost: Running object __package/sipcalc
VERBOSE: localhost: Running object __package/emacs
VERBOSE: localhost: Running object __package/tzdata
VERBOSE: localhost: Running object __package/nmap
VERBOSE: localhost: Preparing object __link/etc/localtime
VERBOSE: localhost: Running manifest and explorers for __link/etc/localtime
VERBOSE: localhost: Running type explorers for <CdistType __link>
VERBOSE: localhost: Running object __link/etc/localtime
VERBOSE: localhost: Running object __my_computer/
VERBOSE: localhost: Running object __timezone/Europe/Zurich
INFO: localhost: Finished successful run in 7.58 seconds
VERBOSE: config: Total processing time for 1 host(s): 7.591623544692993