← Validator Operations — Keys, Slashing, and Coordinated Upgrades

Validator Operations

Lesson 4 of 4·QUIZ10 min40 XP

Treat this page as a workbench, not a blog post. The goal is to extract a reusable mental model from the source and carry it into the rest of the Fabrknt stack.

Course

Validator Operations — Keys, Slashing, and Coordinated Upgrades

Lesson role

QUIZ

Sequence

4 / 4

Quiz — Validator Operations

Question

Recap the three lessons: key management (HSM / MPC / threshold sigs), slashing detection (the DB + fail-closed rule), and coordinated upgrades (height-gated chain spec).

Principle (minimum model)

Key management recap. Five requirements, four solutions (config file → HSM → MPC → threshold sigs), two-key pattern (withdrawal cold / signing hot), remote signer + active-passive multi-region.
Slashing recap. Two paths to losing stake (slashing vs inactivity), three slashable violations (double / surround / equivocation), slashing-protection DB is local + atomic + persistent.
Upgrade recap. Height-gated chain spec, four activation methods, five-step rollout, four emergency tiers, BFT halt-and-recover.

Worked example + steps

Final quiz: validator operations

The validator ops final check. You'll need this to operate any validator, design L1 economics, or understand why production chains fail.

Summary (3 lines)

Seven questions spanning keys, slashing, and upgrades — the operational triangle for validators.
Get two or more wrong → re-read the relevant lesson before moving on.
Pass → advance to the bootcamp courses for hands-on labs (or to Production Security & Governance for the org-level view).

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Lesson 3 — Hot upgrades and coordinated chain upgrades