An engineer needs more diagnostic detail from an Instana agent to investigate a specific problem. What is the correct approach to log levels?
Select an answer to reveal the explanation.
Short Explanation
You want the detail without wrecking the system. Raise the log level temporarily and only on the components involved, then put it back when you're done.
Full Explanation
The correct approach is to raise the log level temporarily and only on the components involved, then return it to normal once the investigation is finished. Increasing verbosity narrowly gives the detail the investigation needs while keeping the volume readable and the performance and storage cost bounded. Reverting afterwards prevents that cost from becoming permanent.
Enabling debug logging permanently in production is incorrect because it consumes disk and I/O continuously and buries meaningful entries in routine detail. Turning on all available logging everywhere is incorrect because it produces so much output that finding the relevant lines becomes harder, not easier. Lowering the log level during the investigation is incorrect because it inverts the requirement; reducing detail during an active investigation removes the very evidence being sought.
For the exam, remember both qualifiers: temporarily and narrowly.