Add prom exporter to minecraft

badhouseplants/values/values.minecraft.yaml

@@ -1,3 +1,4 @@
+---
 resources:
   requests:
     memory: 512Mi
@@ -9,11 +10,48 @@ minecraftServer:
   hardcore: true
   version: 1.19.2
   type: "PAPER"
-  paperDownloadUrl: "https://api.papermc.io/v2/projects/paper/versions/1.19.2/builds/307/downloads/paper-1.19.2-307.jar"
+  paperDownloadUrl: >
+    https://api.papermc.io/v2/projects/paper/versions/1.19.2/builds/307/downloads/paper-1.19.2-307.jar
   gameMode: survival
   pvp: true
   memory: 4096M
+  extraPorts:
+    - name: metrics
+      containerPort: 9225
+      protocol: TCP
+      service:
+        enabled: true
+        embedded: false
+        annotations:
+          prometheus.io/port: "9225"
+          prometheus.io/scrape: "true"
+        type: ClusterIP
+        port: 9925
+      ingress:
+        enabled: false
 persistence:
   dataDir:
     enabled: true
     Size: 8Gi
+initContainers:
+  - name: install-prometheus-exporter
+    image: alpine/curl
+    command:
+      - curl
+      - -L
+      - "https://github.com/sladkoff/minecraft-prometheus-exporter/releases/download/v2.5.0/minecraft-prometheus-exporter-2.5.0.jar"
+      - -o
+      - /data/plugins/prometheus-exporter.jar
+    volumeMounts:
+      - name: plugins
+        mountPath: /data/plugins
+        readOnly: false
+extraVolumes:
+  - volumeMounts:
+      - name: plugins
+        mountPath: /data/plugins
+        readOnly: false
+    volumes:
+      - name: plugins
+        emptyDir:
+          sizeLimit: 500Mi