fix: update helm chart values for k3s scheduler

- Mount `/vector-data-dir` from host (`/var/lib/vector` via `hostPath`, `DirectoryOrCreate`) so `kubernetes_logs` checkpoints survive pod restarts; resolves conflict with the chart's read-only `/var/lib` default volume
- Enable Vector API on `:8686` and wire HTTP `/health` liveness and readiness probes; add `internal_metrics` source and `prometheus_exporter` sink on `:9090` so the `prom-exporter` service port is actually backed by an exporter
- Set explicit `targetPort` on the `prom-exporter` port to avoid inference mismatches
- Remove the `.message = .message` no-op
- Add `node-role.kubernetes.io/control-plane` toleration alongside the legacy `master` key so the DaemonSet schedules on control-plane nodes regardless of cluster age

plugins/scheduler-k3s/templates/helm-config/vector.yaml

@@ -5,30 +5,61 @@ tolerations:
   - effect: NoSchedule
     key: node-role.kubernetes.io/master
     operator: Exists
+  - effect: NoSchedule
+    key: node-role.kubernetes.io/control-plane
+    operator: Exists
   - effect: NoSchedule
     key: node-role.kubernetes.io/infra
     operator: Exists
 
 service:
   ports:
-  - name: prom-exporter
-    port: 9090
-    protocol: TCP
+    - name: prom-exporter
+      port: 9090
+      protocol: TCP
+      targetPort: 9090
+
+livenessProbe:
+  httpGet:
+    path: /health
+    port: api
+readinessProbe:
+  httpGet:
+    path: /health
+    port: api
+
+extraVolumes:
+  - name: vector-data-dir
+    hostPath:
+      path: /var/lib/vector
+      type: DirectoryOrCreate
+
+extraVolumeMounts:
+  - name: vector-data-dir
+    mountPath: /vector-data-dir
+    readOnly: false
 
 customConfig:
   data_dir: /vector-data-dir
 
+  api:
+    enabled: true
+    address: 0.0.0.0:8686
+    playground: false
+
   sources:
     kubernetes_logs:
       type: kubernetes_logs
 
+    internal_metrics:
+      type: internal_metrics
+
   transforms:
     kubernetes_container_logs:
       type: remap
       inputs:
         - kubernetes_logs
       source: |
-        .message = .message
         .container = .kubernetes.container_name
         .pod = .kubernetes.pod_name
         .namespace = .kubernetes.pod_namespace
@@ -40,3 +71,9 @@ customConfig:
         - kubernetes_container_logs
       encoding:
         codec: json
+
+    prom_exporter:
+      type: prometheus_exporter
+      inputs:
+        - internal_metrics
+      address: 0.0.0.0:9090