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## Issue Addressed Closes #3514 ## Proposed Changes - Change default monitoring endpoint frequency to 120 seconds to fit with 30k requests/month limit. - Allow configuration of the monitoring endpoint frequency using `--monitoring-endpoint-frequency N` where `N` is a value in seconds.
87 lines
2.7 KiB
Markdown
87 lines
2.7 KiB
Markdown
# Prometheus Metrics
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Lighthouse provides an extensive suite of metrics and monitoring in the
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[Prometheus](https://prometheus.io/docs/introduction/overview/) export format
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via a HTTP server built into Lighthouse.
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These metrics are generally consumed by a Prometheus server and displayed via a
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Grafana dashboard. These components are available in a docker-compose format at
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[sigp/lighthouse-metrics](https://github.com/sigp/lighthouse-metrics).
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## Beacon Node Metrics
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By default, these metrics are disabled but can be enabled with the `--metrics`
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flag. Use the `--metrics-address`, `--metrics-port` and
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`--metrics-allow-origin` flags to customize the metrics server.
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### Example
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Start a beacon node with the metrics server enabled:
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```bash
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lighthouse bn --metrics
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```
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Check to ensure that the metrics are available on the default port:
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```bash
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curl localhost:5054/metrics
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```
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## Validator Client Metrics
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By default, these metrics are disabled but can be enabled with the `--metrics`
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flag. Use the `--metrics-address`, `--metrics-port` and
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`--metrics-allow-origin` flags to customize the metrics server.
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### Example
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Start a validator client with the metrics server enabled:
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```bash
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lighthouse vc --metrics
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```
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Check to ensure that the metrics are available on the default port:
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```bash
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curl localhost:5064/metrics
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```
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## Remote Monitoring
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Lighthouse has the ability to send a subset of metrics to a remote server for collection. Presently
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the main server offering remote monitoring is beaconcha.in. Instructions for setting this up
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can be found in beaconcha.in's docs:
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- <https://kb.beaconcha.in/beaconcha.in-explorer/mobile-app-less-than-greater-than-beacon-node>
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The Lighthouse flag for setting the monitoring URL is `--monitoring-endpoint`.
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When sending metrics to a remote server you should be conscious of security:
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- Only use a monitoring service that you trust: you are sending detailed information about
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your validators and beacon node to this service which could be used to track you.
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- Always use an HTTPS URL to prevent the traffic being intercepted in transit.
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The specification for the monitoring endpoint can be found here:
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- <https://github.com/gobitfly/eth2-client-metrics>
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_Note: the similarly named [Validator Monitor](./validator-monitoring.md) feature is entirely
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independent of remote metric monitoring_.
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### Update Period
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You can adjust the frequency at which Lighthouse sends metrics to the remote server using the
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`--monitoring-endpoint-period` flag. It takes an integer value in seconds, defaulting to 60
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seconds.
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```
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lighthouse bn --monitoring-endpoint-period 60 --monitoring-endpoint "https://url"
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```
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Increasing the monitoring period between can be useful if you are running into rate limits when
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posting large amounts of data for multiple nodes.
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