Every write to the cluster fails and etcd reports a NOSPACE alarm. The disk has plenty of room. Get us writing again.

The disk is not full, the keyspace quota is. Defragmenting without disarming the alarm leaves the cluster read-only, and disarming without compacting puts it back within minutes.

Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

The disk is not full, the keyspace quota is. Defragmenting without disarming the alarm leaves the cluster read-only, and disarming without compacting puts it back within minutes.

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