Troubleshoot Fluentd

When to use this skill

Buffer Saturation (Backpressure): Destination slow/unreachable then buffer
Retry Storm: Output fails repeatedly then exponential backoff then queue never
Memory Bloat / OOM: Ruby memory fragmentation, or memory-backed buffers
Poison Pill Crash Loop: Malformed log line causes parser crash then process
Silent Data Loss: Events dropped due to overflow_action: throw_exception
File Rotation Loss: Improper handling of logrotate copytruncate causes
Any time the user reports a Fluentd service behaving outside its expected envelope (elevated errors, latency, saturation, resource exhaustion, or unexpected restarts).
An on-call engineer is paging on a Netdata alert tied to a Fluentd instance and wants a structured triage path.