Monitoring Fundamentals - The Practice of Cloud System Administration - page 342

Exercises
1. What is the goal of monitoring?
2. Why is monitoring important in distributed systems?
3. Why should operations staff be omniscient, omnipresent, and omnipotent? Why
are these important characteristics?
4. How is a measurement different from a metric?
5. If you could monitor only three things about a web site, what would they be? Justi-
fy your answer.
6. Section 16.2 mentioned that there are no situations where (R-, L+, D-) and (R-,
L+, D+) had been observed. Why might this be?
7. Most monitoring systems “ping” devices to determine if they are up. This entire
chapter never mentions ping. Based on what you learned in this chapter, why is
pinging devices an insufficient or failed operational strategy for monitoring?