Discourse Prometheus

Plugin
,
1
:discourse2: Summary Discourse Prometheus is the official Prometheus exporter for Discourse
:hammer_and_wrench: Repository Link https://github.com/discourse/discourse-prometheus
:open_book: Install Guide How to install plugins in Discourse

The Discourse Prometheus plugin collects key metrics from Discourse and exposes them in the /metrics path so prometheus can consume them.

These metrics can be used to Graph all sorts of data like:

image
image948×806 47.9 KB

Median and 99th percentile times for topic / categories / top and latest pages. Breaking down execution time between SQL/Redis and App.

image
image956×430 59.4 KB

Page view tracking

image
image952×394 34 KB

Error tracking

image
image958×453 34.9 KB

Ruby object space tracking including allocation rate, heaps and so on.

image
image954×449 34.9 KB

Hosted V8 memory statistics

image
image953×582 51.5 KB

Scheduled Job Queue and Sidekiq job durations and executions.

To see a full list of metrics available, install the plugin and visit SITENAME/metrics as an admin.

Out of the box we allow the metrics route to admins and private ips.

Discourse Prometheus is smart enough to aggregate data for all forked unicorn processes and present it as cohesive metrics on a single endpoint. We use it internally to keep track of our sites.

Sample dashboard at:

Discourse global setting called prometheus_trusted_ip_allowlist_regex (env: DISCOURSE_PROMETHEUS_TRUSTED_IP_ALLOWLIST_REGEX) is allowing to set Prometheus’s trusted IP addresses. The setting accepts regular expression to set advanced IP ranges. This is useful in a case when Prometheus IP address is dynamic.

51 curtidas
99

Estou gerenciando o Discourse no Kubernetes, executando em múltiplos pods de app e sidekiq. Tenho algumas perguntas sobre o plugin:

  1. O plugin agrega métricas de todos os pods de app? Assumo que ele agrega métricas para processos unicorn em execução em uma única instância/pod.
  2. Estou curioso sobre o motivo de observar tempos apenas para algumas ações do controlador. Esta consulta está relacionada ao código em discourse-prometheus/lib/collector.rb at main · discourse/discourse-prometheus · GitHub.
102

Olá,

Onde posso encontrar a configuração prometheus_trusted_ip_allowlist_regex? :crying_cat_face:

image
image2040×854 35.1 KB

Estou usando o Discourse v3.4.0.beta3-dev

103

Você precisa definir DISCOURSE_PROMETHEUS_TRUSTED_IP_ALLOWIST_REGEX em app.yml.

1 curtida
104

Não tenho certeza do que está acontecendo, mas esta integração não está mais funcionando. Não consegui fazer o painel no Grafana exibir nada… o /metrics retorna algo, mas qualquer coisa além disso não funciona realmente.

Muitos erros como o abaixo

Started GET "/metrics/api/v1/label/instance/values?limit=40000&start=1760980620&end=1760982480&match[]=discourse_page_views" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
Started GET "/metrics/api/v1/label/job/values?limit=40000&start=1760980620&end=1760982480&match[]=discourse_page_views%7B%7D" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
  Rendered layout layouts/no_ember.html.erb (Duration: 21.1ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 26.0ms | GC: 0.0ms)
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
  Rendered layout layouts/no_ember.html.erb (Duration: 19.8ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 28.2ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 34.6ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 44.4ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 41.7ms | GC: 0.0ms)
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:07 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:08 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:08 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:08 +0000
  Rendered layout layouts/no_ember.html.erb (Duration: 23.6ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 24.9ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 19.9ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 21.6ms | GC: 0.0ms)
Started GET "/metrics/api/v1/label/job/values?limit=40000&start=1760980620&end=1760982480&match[]=discourse_page_views%7B%7D" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
Started GET "/metrics/api/v1/label/instance/values?limit=40000&start=1760980620&end=1760982480&match[]=discourse_page_views" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
  Rendered layout layouts/no_ember.html.erb (Duration: 19.5ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 20.9ms | GC: 0.0ms)
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
Started POST "/metrics/api/v1/query_range" for 16.63.57.20 at 2025-10-20 17:47:37 +0000
  Rendered layout layouts/no_ember.html.erb (Duration: 22.4ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 22.0ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 40.0ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 37.0ms | GC: 0.0ms)
  Rendered layout layouts/no_ember.html.erb (Duration: 24.8ms | GC: 1.6ms)
105

Postando novamente, pois encontrei uma solução que funcionou para mim Discourse Prometheus 404 metrics for Grafana - #2 by DevTeVe