Module @libp2p/prometheus-metrics

Configure your libp2p node with Prometheus metrics:

import { createLibp2p } from 'libp2p'
import { prometheusMetrics } from '@libp2p/prometheus-metrics'

const node = await createLibp2p({
  metrics: prometheusMetrics()
})
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Then use the prom-client module to supply metrics to the Prometheus/Graphana client using your http framework:

import client from 'prom-client'

async function handler (request, h) {
  return h.response(await client.register.metrics())
    .type(client.register.contentType)
}
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All Prometheus metrics are global so there's no other work required to extract them.

Queries

Some useful queries are:

Data sent/received

rate(libp2p_data_transfer_bytes_total[30s])
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CPU usage

rate(process_cpu_user_seconds_total[30s]) * 100
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Memory usage

nodejs_memory_usage_bytes
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DHT query time

libp2p_kad_dht_wan_query_time_seconds
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or

libp2p_kad_dht_lan_query_time_seconds
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TCP transport dialer errors

rate(libp2p_tcp_dialer_errors_total[30s])
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