You support a Python application running in production on Compute Engine. You want to debug some of the application code by inspecting the value of a specific variable. What should you do?

Question

Options

• ACreate a Stackdriver Debugger Logpoint with the variable at a specific line location in your
• BUse your local development environment and code editor to set up a breakpoint in the source
• CModify the source code of the application to log the value of the variable, deploy to the
• DCreate a Stackdriver Debugger snapshot at a specific line location in your application's source

• A
  6% (2)
• B
  3% (1)
• C
  6% (2)
• D
  84% (26)

Explanation

Cloud Debugger (formerly Stackdriver Debugger) snapshots allow you to capture the full application state - including local variables, call stack, and object values - at a specific line of code in a live production application without pausing or redeploying it. This is exactly what is needed to inspect a variable's value. A Logpoint (option A) only appends a log message and is less suited for deep state inspection. Option B (local breakpoint) cannot attach to a live Compute Engine instance. Option C requires a code change and redeployment, adding risk to production.

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