Troubleshooting

Triage Aptos incidents by interface. If REST is unhealthy, check process status, storage, and p2p sync. If GraphQL is stale, compare indexer checkpoint lag against fullnode ledger version. If Transaction Stream processors loop, inspect cursor commits and idempotency conflicts.

Symptom	First check
REST timeout	Gateway logs, node process, port 8080 bind
Ledger not advancing	Peer count, p2p 6180, disk saturation
GraphQL stale	Processor cursor vs REST ledger version
Duplicate rows	Unique key on transaction version/event index