Add mixin to strip cpu/memory limits (issue #72)

jsonnet/kube-prometheus/kube-prometheus-strip-limits.libsonnet

@@ -0,0 +1,56 @@
+// Strips spec.containers[].limits for certain containers
+// https://github.com/coreos/kube-prometheus/issues/72
+{
+  nodeExporter+: {
+    daemonset+: {
+      spec+: {
+        template+: {
+          spec+: {
+            local stripLimits(c) =
+                if std.count([
+                    'node-exporter',
+                    'kube-rbac-proxy'
+                ], c.name) > 0
+                then c + {resources+: {limits: {}}}
+                else c,
+            containers: std.map(stripLimits, super.containers),
+          },
+        },
+      },
+    },
+  },
+  prometheusOperator+: {
+    deployment+: {
+      spec+: {
+        template+: {
+          spec+: {
+            local addArgs(c) =
+                if c.name == 'prometheus-operator'
+                then c + {args+: ['--config-reloader-cpu=0']}
+                else c,
+            containers: std.map(addArgs, super.containers),
+          },
+        },
+      },
+    },
+  },
+  kubeStateMetrics+: {
+    deployment+: {
+      spec+: {
+        template+: {
+          spec+: {
+            local stripLimits(c) =
+                if std.count([
+                    'kube-rbac-proxy-main',
+                    'kube-rbac-proxy-self',
+                    'addon-resizer'
+                ], c.name) > 0
+                then c + {resources+: {limits: {}}}
+                else c,
+            containers: std.map(stripLimits, super.containers),
+          },
+        },
+      },
+    },
+  },
+}