4 Agents and instrumentation
This chapter covers
- What we mean by agents and instrumentation
- What types of agents exist, for what signal types
- What OpenTelemetry is and how you can benefit from it
- Criteria for selecting an agent
In this chapter, we will focus on how to get the signals from the sources we discussed in chapter 3 to the destinations, which we will be focusing on in chapters 5 and 6. Since observability is all about getting actionable insights from the signals the systems under observation expose, without the agents and instrumentation, there would be little to observe.
In a nutshell, in this chapter, we will learn how to instrument code (and automate that task) as well as select and deploy agents that collect, aggregate, filter, ...
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