From 0d2047b5cc7f2b8187e3f5111b430dde37b3e82f Mon Sep 17 00:00:00 2001
From: Garry O'Donnell <garry.o'donnell@diamond.ac.uk>
Date: Thu, 14 Mar 2024 09:49:58 +0000
Subject: [PATCH] Setup prometheus for monitoring

---
 charts/data-gateway/Chart.lock  |   6 ++
 charts/data-gateway/Chart.yaml  |   7 +-
 charts/data-gateway/values.yaml | 123 ++++++++++++++++++++++++++++++++
 3 files changed, 135 insertions(+), 1 deletion(-)
 create mode 100644 charts/data-gateway/Chart.lock

diff --git a/charts/data-gateway/Chart.lock b/charts/data-gateway/Chart.lock
new file mode 100644
index 0000000..f64e164
--- /dev/null
+++ b/charts/data-gateway/Chart.lock
@@ -0,0 +1,6 @@
+dependencies:
+- name: prometheus
+  repository: https://prometheus-community.github.io/helm-charts
+  version: 25.17.0
+digest: sha256:1567645f0c8c096eb44cd7eadb5e6a694dc19a01911ae41b75dec83ab0e96d4c
+generated: "2024-03-14T09:36:26.799022195Z"
diff --git a/charts/data-gateway/Chart.yaml b/charts/data-gateway/Chart.yaml
index 9ca9139..9824e64 100644
--- a/charts/data-gateway/Chart.yaml
+++ b/charts/data-gateway/Chart.yaml
@@ -3,5 +3,10 @@ name: data-gateway
 description: A GraphQL router deployment forming the Diamond Data Gateway
 type: application
 
-version: 0.1.0
+version: 0.2.0
 
+dependencies:
+  - name: prometheus
+    repository: https://prometheus-community.github.io/helm-charts
+    version: 25.17.0
+    condition: prometheus.enabled
diff --git a/charts/data-gateway/values.yaml b/charts/data-gateway/values.yaml
index e69de29..2d0a40e 100644
--- a/charts/data-gateway/values.yaml
+++ b/charts/data-gateway/values.yaml
@@ -0,0 +1,123 @@
+prometheus:
+  enabled: true
+  kube-state-metrics:
+    enabled: false
+  prometheus-node-exporter:
+    enabled: false
+  prometheus-pushgateway:
+    enabled: false
+  rbac:
+    create: false
+  configmapReload:
+    prometheus:
+      resources:
+        limits:
+          cpu: 50m
+          memory: 400Mi
+  serviceAccounts:
+    prometheus-node-exporter:
+      create: false
+      name: default-full-access-mounted
+    pushgateway:
+      create: false
+      name: default-full-access-mounted
+    server:
+      create: false
+      name: default-full-access-mounted
+  serverFiles:
+    prometheus.yml:
+      scrape_configs:
+        - job_name: prometheus
+          static_configs:
+            - targets:
+                - localhost:9090
+        - job_name: "kubernetes-service-endpoints"
+          kubernetes_sd_configs:
+            - role: endpoints
+              namespaces:
+                own_namespace: true
+          relabel_configs:
+            - source_labels:
+                [__meta_kubernetes_service_annotation_prometheus_io_scrape]
+              action: keep
+              regex: true
+            - source_labels:
+                [__meta_kubernetes_service_annotation_prometheus_io_scheme]
+              action: replace
+              target_label: __scheme__
+              regex: (https?)
+            - source_labels:
+                [__meta_kubernetes_service_annotation_prometheus_io_path]
+              action: replace
+              target_label: __metrics_path__
+              regex: (.+)
+            - source_labels:
+                [
+                  __address__,
+                  __meta_kubernetes_service_annotation_prometheus_io_port,
+                ]
+              action: replace
+              target_label: __address__
+              regex: (.+?)(?::\d+)?;(\d+)
+              replacement: $1:$2
+            - action: labelmap
+              regex: __meta_kubernetes_service_annotation_prometheus_io_param_(.+)
+              replacement: __param_$1
+            - action: labelmap
+              regex: __meta_kubernetes_service_label_(.+)
+            - source_labels: [__meta_kubernetes_namespace]
+              action: replace
+              target_label: namespace
+            - source_labels: [__meta_kubernetes_service_name]
+              action: replace
+              target_label: service
+            - source_labels: [__meta_kubernetes_pod_node_name]
+              action: replace
+              target_label: node
+        - job_name: "kubernetes-pods"
+          kubernetes_sd_configs:
+            - role: pod
+              namespaces:
+                own_namespace: true
+          relabel_configs:
+            - source_labels:
+                [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
+              action: keep
+              regex: true
+            - source_labels:
+                [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
+              action: keep
+              regex: true
+            - source_labels:
+                [__meta_kubernetes_pod_annotation_prometheus_io_scheme]
+              action: replace
+              regex: (https?)
+              target_label: __scheme__
+            - source_labels:
+                [__meta_kubernetes_pod_annotation_prometheus_io_path]
+              action: replace
+              target_label: __metrics_path__
+              regex: (.+)
+            - source_labels:
+                [
+                  __address__,
+                  __meta_kubernetes_pod_annotation_prometheus_io_port,
+                ]
+              action: replace
+              regex: ([^:]+)(?::\d+)?;(\d+)
+              replacement: $1:$2
+              target_label: __address__
+            - action: labelmap
+              regex: __meta_kubernetes_pod_annotation_prometheus_io_param_(.+)
+              replacement: __param_$1
+            - action: labelmap
+              regex: __meta_kubernetes_pod_label_(.+)
+            - source_labels: [__meta_kubernetes_namespace]
+              action: replace
+              target_label: namespace
+            - source_labels: [__meta_kubernetes_pod_name]
+              action: replace
+              target_label: pod
+            - source_labels: [__meta_kubernetes_pod_phase]
+              regex: Pending|Succeeded|Failed|Completed
+              action: drop