From 688e6c35d3e4b98b3ec33f80d7902a976ba518b0 Mon Sep 17 00:00:00 2001
From: mirsal <mirsal@mirsal.fr>
Date: Tue, 10 Aug 2021 01:06:41 +0000
Subject: [PATCH] prometheus: Enable collection of traefik metrics

---
 .env.sample                           | 4 ++++
 abra.sh                               | 2 +-
 compose.yml                           | 3 ++-
 prometheus.yml => prometheus.yml.tmpl | 4 +++-
 4 files changed, 10 insertions(+), 3 deletions(-)
 rename prometheus.yml => prometheus.yml.tmpl (92%)

diff --git a/.env.sample b/.env.sample
index 025b2a3..0dea8bc 100644
--- a/.env.sample
+++ b/.env.sample
@@ -5,6 +5,10 @@ PROMETHEUS_DOMAIN=prometheus.example.com
 
 LETS_ENCRYPT_ENV=production
 
+# Edit this in order to allow collection of traefik metrics
+#TRAEFIK_METRICS_ENABLED=1
+#TRAEFIK_SERVICE_NAME=traefik_app
+
 # grafana SMTP configuration (optional)
 #GF_SMTP_HOST=changeme
 #GF_SMTP_ENABLED=1
diff --git a/abra.sh b/abra.sh
index 9a14054..2011d6b 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1,4 +1,4 @@
-export PROMETHEUS_YML_VERSION=v1
+export PROMETHEUS_YML_VERSION=v2
 export PROMTAIL_YML_VERSION=v1
 export LOKI_YML_VERSION=v1
 export NODE_EXPORTER_ENTRYPOINT_VERSION=v1
diff --git a/compose.yml b/compose.yml
index 0f99ae1..5b12154 100644
--- a/compose.yml
+++ b/compose.yml
@@ -145,8 +145,9 @@ services:
 
 configs:
   prometheus_yml:
+    template_driver: golang
     name: ${STACK_NAME}_prometheus_yml_${PROMETHEUS_YML_VERSION}
-    file: prometheus.yml
+    file: prometheus.yml.tmpl
   promtail_yml:
     name: ${STACK_NAME}_promtail_yml_${PROMTAIL_YML_VERSION}
     file: promtail.yml
diff --git a/prometheus.yml b/prometheus.yml.tmpl
similarity index 92%
rename from prometheus.yml
rename to prometheus.yml.tmpl
index ad4e77d..2547b27 100644
--- a/prometheus.yml
+++ b/prometheus.yml.tmpl
@@ -46,11 +46,13 @@ scrape_configs:
       type: 'A'
       port: 8080
 
+{{ if eq (env "TRAEFIK_METRICS_ENABLED") "1" }}
   - job_name: 'traefik'
     scrape_interval: 30s
     metrics_path: '/metrics'
     dns_sd_configs:
     - names:
-      - 'tasks.traefik_app'
+      - 'tasks.{{ (env "TRAEFIK_SERVICE_NAME") }}'
       type: 'A'
       port: 8082
+{{ end }}