Cluster Nuke and Recovery

If cluster goes away, can you rebuild? The test.

Test

Cluster nuke recovery is the discipline of testing whether a cluster can be rebuilt from scratch. The exercise reveals gaps in IaC, missing credentials, manual steps that were forgotten. The discipline pays off when real disaster recovery is needed.

What the test looks like:

• Tear down a non-prod cluster.: The team picks a non-production cluster and destroys it. Everything is gone; the cluster does not exist; the team must rebuild from scratch.
• Rebuild from git.: The team's IaC and configuration in git is the source of truth. The rebuild applies these; the cluster comes back; the test verifies whether everything in git is sufficient.
• Time it.: The rebuild's duration is measured. The metric reveals the team's recovery capability; improvements over time are visible; the trend is the program-level signal.
• Compare to RTO commitment.: The team's RTO commitment is the target. If recovery takes longer than RTO, the discipline has gaps; if shorter, the commitment is real.
• Schedule the test.: The test happens on schedule (typically annually). The discipline is sustained; the recovery capability is verified periodically.

The test is the foundation. Without it, recovery capability is theoretical.

Findings

The test reveals gaps. Manual steps that were forgotten; configuration not in IaC; credentials that need manual setup; each finding is an action item that improves future recovery.

• Manual steps.: Steps that were not automated surface during the rebuild. Manual configuration of specific tools; one-off commands; ad-hoc fixes all are revealed.
• Missing IaC.: Some resources exist in production but are not in IaC. The rebuild does not recreate them; the gaps are discovered; remediation captures them in IaC.
• Stale credentials.: Some credentials were set up manually long ago. The rebuild needs them; they are not in git; the team's discipline includes capturing them.
• Each is an action item.: Each finding produces remediation. The team's IaC grows; the manual steps shrink; the discipline strengthens over time.
• Document the findings.: The findings are documented. Future tests build on the documentation; the discipline compounds; the team's progress is visible.

The findings are the value. Each one strengthens the team's recovery capability.

Compound

The discipline compounds. Annual tests reveal new findings; new findings drive remediation; the recovery time improves over time.

• Annual: cluster recovery time should improve.: The metric trends. Year one might be days; year two hours; year three an hour. The improvement is visible; the discipline is reinforced.
• From days to hours over years.: Mature teams reach hour-level recovery. The discipline of capturing everything in IaC, automating everything, eliminating manual steps produces dramatic improvement.
• Track per-stage time.: Beyond total time, per-stage time matters. Cluster bring-up; addon deployment; application deployment; data restoration each are stages; each can be optimized.
• Compare across clusters.: Different clusters have different recovery times. The team's per-cluster comparison reveals which are well-maintained and which have hidden gaps.
• Document the trend.: The trend over time is documented. The progress supports compliance discussions; the discipline is communicated to leadership; the investment is justified.

Cluster nuke recovery is one of those operational disciplines that pays off in disaster recovery scenarios. Nova AI Ops integrates with cluster automation and recovery telemetry, surfaces patterns, and supports the team's recovery improvement over time.