Monitoring: add node tag to node-exporter metrics

prometheus/values.yaml

@@ -38,6 +38,12 @@ grafana:
       - grafana.services.yolokube.de
     ingressClassName: nginx
 prometheus-node-exporter:
+  prometheus:
+    monitor:
+      enabled: true
+      relabelings:
+        - sourceLabels: [__meta_kubernetes_endpoint_node_name]
+          targetLabel: node
   extraArgs:
     - '--collector.filesystem.mount-points-exclude=^/(dev|proc|sys|var/lib/docker/.+|var/lib/kubelet/.+)($|/)'
     - '--collector.filesystem.fs-types-exclude=^(autofs|binfmt_misc|bpf|cgroup2?|configfs|debugfs|devpts|devtmpfs|fusectl|hugetlbfs|iso9660|mqueue|nsfs|overlay|proc|procfs|pstore|rpc_pipefs|securityfs|selinuxfs|squashfs|sysfs|tracefs)$'