GetLogLevel attempts to guess the current log level that is used by klog.

LogLevelToVerbosity transforms operator log level to a klog numeric verbosity level.

NewClusterOperatorLoggingController sets a klog level for the operator based on the operator config.

NewClusterOperatorLoggingControllerWithLogLevel sets a klog level for the operator based on the operator config, using the given default log level if the operator config does not specify anything.

SetLogLevel is a nasty hack and attempt to manipulate the global flags as klog does not expose a way to dynamically change the loglevel in runtime.