kube-prometheus: Use node-exporter metrics for resource metrics API

jsonnet/kube-prometheus/prometheus-adapter/prometheus-adapter.libsonnet

@@ -20,7 +20,7 @@ local k = import 'ksonnet/ksonnet.beta.3/k.libsonnet';
         resourceRules:
           cpu:
             containerQuery: sum(rate(container_cpu_usage_seconds_total{<<.LabelMatchers>>}[1m])) by (<<.GroupBy>>)
-            nodeQuery: sum(rate(container_cpu_usage_seconds_total{<<.LabelMatchers>>, id='/'}[1m])) by (<<.GroupBy>>)
+            nodeQuery: sum(1 - rate(node_cpu_seconds_total{mode="idle"}[1m]) * on(namespace, pod) group_left(node) node_namespace_pod:kube_pod_info:{<<.LabelMatchers>>}) by (<<.GroupBy>>)
             resources:
               overrides:
                 node:
@@ -32,7 +32,7 @@ local k = import 'ksonnet/ksonnet.beta.3/k.libsonnet';
             containerLabel: container_name
           memory:
             containerQuery: sum(container_memory_working_set_bytes{<<.LabelMatchers>>}) by (<<.GroupBy>>)
-            nodeQuery: sum(container_memory_working_set_bytes{<<.LabelMatchers>>,id='/'}) by (<<.GroupBy>>)
+            nodeQuery: sum(node:node_memory_bytes_total:sum{<<.LabelMatchers>>} - node:node_memory_bytes_available:sum{<<.LabelMatchers>>}) by (<<.GroupBy>>)
             resources:
               overrides:
                 node: