fix(infrastructure): prometheus

tofu/modules/maxscale/charts/maxscale-helm/templates/config.yaml

@@ -54,6 +54,12 @@ spec:
 
     metrics:
       enabled: true
+      serviceMonitor:
+        enabled: true
+        interval: 30s
+        scrapeTimeout: 10s
+        prometheusRelease: kube-prometheus-stack
+        jobLabel: mariadb-monitoring
 
     tls:
       enabled: true
@@ -106,7 +112,17 @@ spec:
       key: dsn
 
   affinity:
-    antiAffinityEnabled: true
+    podAntiAffinity:
+      preferredDuringSchedulingIgnoredDuringExecution:
+        - weight: 100
+          podAffinityTerm:
+            labelSelector:
+              matchExpressions:
+                - key: app.kubernetes.io/name
+                  operator: In
+                  values:
+                    - mariadb-repl
+            topologyKey: kubernetes.io/hostname
 
   tolerations:
     - key: "k8s.mariadb.com/ha"
@@ -149,6 +165,12 @@ spec:
 
   metrics:
     enabled: true
+    serviceMonitor:
+      enabled: true
+      interval: 30s
+      scrapeTimeout: 10s
+      prometheusRelease: kube-prometheus-stack
+      jobLabel: mariadb-monitoring
 
   tls:
     enabled: true