[Verse 1]
When controllers start to fail and quorum breaks apart
Three becomes two becomes one, then silence in the heart
Of your KRaft cluster running wild without a guiding hand
Time to learn recovery before you lose command
[Chorus]
Back it up, restore it right, metadata logs secure
Kafka storage script in hand, bootstrap to be sure
Controller quorum lost tonight, but we know what to do
Five disaster steps ahead, we'll pull the cluster through
[Verse 2]
First assess the damage done, how many nodes remain
Check the metadata directory, what's broken, what's retained
Network partitions split the brain, disk space running low
Monitor your dashboard now to see which way to go
[Chorus]
Back it up, restore it right, metadata logs secure
Kafka storage script in hand, bootstrap to be sure
Controller quorum lost tonight, but we know what to do
Five disaster steps ahead, we'll pull the cluster through
[Bridge]
Kafka storage dot S H, format and begin again
Copy snapshots carefully, restore from backup when
Quorum majority is gone, elect new leaders strong
Production grade monitoring shows us what went wrong
[Verse 3]
Simulate the failures first in lab environment safe
Controller loss and partition, full disk scenarios chafe
Practice makes recovery smooth when real disasters strike
Dashboard shows the cluster health, alerts flash red alike
[Chorus]
Back it up, restore it right, metadata logs secure
Kafka storage script in hand, bootstrap to be sure
Controller quorum lost tonight, but we know what to do
Five disaster steps ahead, we'll pull the cluster through
[Outro]
When the smoke clears and nodes align
KRaft cluster back online
Lessons learned from failure's call
Ready now to handle all