An organisation is about to install self-hosted Instana. What should be completed before the installation begins?
Select an answer to reveal the explanation.
Short Explanation
You don't wing self-hosted Instana. Confirm backend prerequisites, size for expected telemetry volume, and nail down availability for supporting services before install. Undersized storage is a pain to fix later.
Full Explanation
The correct answer is the option that says to confirm the backend prerequisites, size the deployment for expected telemetry volume, and establish the availability requirements of the supporting services. Self-hosted Instana has defined prerequisites for the backend and its datastores, and the sizing depends on how much telemetry the environment will produce. Establishing both up front, along with the availability expectations of the supporting services, is what makes the installation predictable.
The option that says to begin the installation and add storage later, once the actual consumption rate has been observed in production, is incorrect because starting without meeting storage requirements risks an install that fails outright or a backend that begins dropping data as soon as it takes real load.
The option that says to defer DNS and certificate work until after the backend is running, since neither affects installation, is incorrect because DNS resolution and valid certificates are needed for agents and users to reach the backend; leaving them until later turns a planning task into an outage.
The option that says to restrict the environment to production data so that installation testing exercises realistic volumes only is incorrect because installation validation should use a representative environment rather than production data, which introduces risk without improving the test.
For the exam, treat prerequisites, sizing and availability as pre-installation work, not post-installation tuning.