From 41d59d998a096667437ca76321cf024228f2d346 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ji=C5=99=C3=AD=20Vrba?= <jiri@vrba.dev>
Date: Sat, 5 Oct 2024 09:07:25 +0200
Subject: [PATCH] Setup custom prometheus docker image that should be deployed
 to railway

---
 .dockerignore                                 |  4 ++
 .../build-prometheus-docker-image.yml         | 37 +++++++++++++++++++
 docker-compose.yml                            |  2 +-
 prometheus/Dockerfile                         |  3 ++
 .../prometheus-local.yml                      |  0
 prometheus/prometheus-railway.yml             | 16 ++++++++
 6 files changed, 61 insertions(+), 1 deletion(-)
 create mode 100644 .dockerignore
 create mode 100644 .github/workflows/build-prometheus-docker-image.yml
 create mode 100644 prometheus/Dockerfile
 rename docker/prometheus.yml => prometheus/prometheus-local.yml (100%)
 create mode 100644 prometheus/prometheus-railway.yml

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..5de3c8e
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,4 @@
+.idea
+.vscode
+.fleet
+dubs-bot.iml
diff --git a/.github/workflows/build-prometheus-docker-image.yml b/.github/workflows/build-prometheus-docker-image.yml
new file mode 100644
index 0000000..5373a5c
--- /dev/null
+++ b/.github/workflows/build-prometheus-docker-image.yml
@@ -0,0 +1,37 @@
+name: Build Prometheus Docker image
+
+on:
+  push:
+    paths:
+      - prometheus/**
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+        with:
+          install: true
+
+      - name: Login to container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          context: ./prometheus
+          tags: ghcr.io/jirkavrba/dubs-bot/prometheus:latest
diff --git a/docker-compose.yml b/docker-compose.yml
index c38a09f..7caa5b9 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -17,4 +17,4 @@ services:
     ports:
       - "9090:9090"
     volumes:
-      - "./docker/prometheus.yml:/etc/prometheus/prometheus.yml"
+      - "./prometheus/prometheus-local.yml:/etc/prometheus/prometheus.yml"
diff --git a/prometheus/Dockerfile b/prometheus/Dockerfile
new file mode 100644
index 0000000..8515071
--- /dev/null
+++ b/prometheus/Dockerfile
@@ -0,0 +1,3 @@
+FROM prom/prometheus:latest
+
+COPY ./prometheus-railway.yml /etc/prometheus/prometheus.yml
diff --git a/docker/prometheus.yml b/prometheus/prometheus-local.yml
similarity index 100%
rename from docker/prometheus.yml
rename to prometheus/prometheus-local.yml
diff --git a/prometheus/prometheus-railway.yml b/prometheus/prometheus-railway.yml
new file mode 100644
index 0000000..5f9ee7f
--- /dev/null
+++ b/prometheus/prometheus-railway.yml
@@ -0,0 +1,16 @@
+scrape_configs:
+  - job_name: prometheus
+    honor_labels: true
+    static_configs:
+      - targets:
+        - "api.railway.internal"
+    scrape_interval: 30s
+    scrape_timeout: 5s
+    body_size_limit: 10MB
+    sample_limit: 1000
+    target_limit: 35
+    label_limit: 35
+    label_name_length_limit: 210
+    label_value_length_limit: 210
+    metrics_path: /prometheus
+    scheme: http