kube-prometheus: Convert to jsonnet

jsonnet/prometheus/prometheus-k8s.libsonnet

@@ -0,0 +1,43 @@
+local k = import "ksonnet.beta.3/k.libsonnet";
+
+local container = k.core.v1.pod.mixin.spec.containersType;
+local resourceRequirements = container.mixin.resourcesType;
+local selector = k.apps.v1beta2.deployment.mixin.spec.selectorType;
+
+local resources = resourceRequirements.new() +
+  resourceRequirements.withRequests({memory: "400Mi"});
+
+{
+    new(namespace)::
+        {
+          apiVersion: "monitoring.coreos.com/v1",
+          kind: "Prometheus",
+          metadata: {
+            name: "k8s",
+            namespace: namespace,
+            labels: {
+              prometheus: "k8s",
+            },
+          },
+          spec: {
+            replicas: 2,
+            version: "v2.2.1",
+            serviceAccountName: "prometheus-k8s",
+            serviceMonitorSelector: selector.withMatchExpressions({key: "k8s-app", operator: "Exists"}),
+            ruleSelector: selector.withMatchLabels({
+              role: "alert-rules",
+              prometheus: "k8s",
+            }),
+            resources: resources,
+            alerting: {
+              alertmanagers: [
+                {
+                  namespace: "monitoring",
+                  name: "alertmanager-main",
+                  port: "web",
+                },
+              ],
+            },
+          },
+        }
+}