package kube

import "encoding/yaml"

configMap prometheus: {
	apiVersion: "v1"
	kind:       "ConfigMap"
	data: {
		"alert.rules": yaml.Marshal(_cue_alert_rules)
		_cue_alert_rules = {
			groups: [{
				name: "rules.yaml"
				rules: [{
					alert: "InstanceDown"
					expr:  "up == 0"
					for:   "30s"
					labels severity: "page"
					annotations: {
						description: "{{$labels.app}} of job {{ $labels.job }} has been down for more than 30 seconds."

						summary: "Instance {{$labels.app}} down"
					}
				}, {
					alert: "InsufficientPeers"
					expr:  "count(up{job=\"etcd\"} == 0) > (count(up{job=\"etcd\"}) / 2 - 1)"
					for:   "3m"
					labels severity: "page"
					annotations: {
						description: "If one more etcd peer goes down the cluster will be unavailable"
						summary:     "etcd cluster small"
					}
				}, {
					alert: "EtcdNoMaster"
					expr:  "sum(etcd_server_has_leader{app=\"etcd\"}) == 0"
					for:   "1s"
					labels severity:     "page"
					annotations summary: "No ETCD master elected."
				}, {
					alert: "PodRestart"
					expr:  "(max_over_time(pod_container_status_restarts_total[5m]) - min_over_time(pod_container_status_restarts_total[5m])) > 2"
					for:   "1m"
					labels severity: "page"
					annotations: {
						description: "{{$labels.app}} {{ $labels.container }} resturted {{ $value }} times in 5m."
						summary:     "Pod for {{$labels.container}} restarts too often"
					}
				}]
			}]
		}

		"prometheus.yml": yaml.Marshal(_cue_prometheus_yml)
		_cue_prometheus_yml = {
			global scrape_interval: "15s"
			rule_files: [
				"/etc/prometheus/alert.rules",
			]
			alerting alertmanagers: [{
				scheme: "http"
				static_configs: [{
					targets: [
						"alertmanager:9093",
					]
				}]
			}]
			scrape_configs: [{
				job_name: "kubernetes-apiservers"

				kubernetes_sd_configs: [{
					role: "endpoints"
				}]

				// Default to scraping over https. If required, just disable this or change to
				// `http`.
				scheme: "https"

				// This TLS & bearer token file config is used to connect to the actual scrape
				// endpoints for cluster components. This is separate to discovery auth
				// configuration because discovery & scraping are two separate concerns in
				// Prometheus. The discovery auth config is automatic if Prometheus runs inside
				// the cluster. Otherwise, more config options have to be provided within the
				// <kubernetes_sd_config>.
				tls_config ca_file: "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"
				// If your node certificates are self-signed or use a different CA to the
				// master CA, then disable certificate verification below. Note that
				// certificate verification is an integral part of a secure infrastructure
				// so this should only be disabled in a controlled environment. You can
				// disable certificate verification by uncommenting the line below.
				//
				// insecure_skip_verify: true
				bearer_token_file: "/var/run/secrets/kubernetes.io/serviceaccount/token"

				// Keep only the default/kubernetes service endpoints for the https port. This
				// will add targets for each API server which Kubernetes adds an endpoint to
				// the default/kubernetes service.
				relabel_configs: [{
					source_labels: ["__meta_kubernetes_namespace", "__meta_kubernetes_service_name", "__meta_kubernetes_endpoint_port_name"]
					action: "keep"
					regex:  "default;kubernetes;https"
				}]
			}, {
				// Scrape config for nodes (kubelet).
				//
				// Rather than connecting directly to the node, the scrape is proxied though the
				// Kubernetes apiserver.  This means it will work if Prometheus is running out of
				// cluster, or can't connect to nodes for some other reason (e.g. because of
				// firewalling).
				job_name: "kubernetes-nodes"

				// Default to scraping over https. If required, just disable this or change to
				// `http`.
				scheme: "https"

				// This TLS & bearer token file config is used to connect to the actual scrape
				// endpoints for cluster components. This is separate to discovery auth
				// configuration because discovery & scraping are two separate concerns in
				// Prometheus. The discovery auth config is automatic if Prometheus runs inside
				// the cluster. Otherwise, more config options have to be provided within the
				// <kubernetes_sd_config>.
				tls_config ca_file: "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"
				bearer_token_file: "/var/run/secrets/kubernetes.io/serviceaccount/token"

				kubernetes_sd_configs: [{
					role: "node"
				}]

				relabel_configs: [{
					action: "labelmap"
					regex:  "__meta_kubernetes_node_label_(.+)"
				}, {
					target_label: "__address__"
					replacement:  "kubernetes.default.svc:443"
				}, {
					source_labels: ["__meta_kubernetes_node_name"]
					regex:        "(.+)"
					target_label: "__metrics_path__"
					replacement:  "/api/v1/nodes/${1}/proxy/metrics"
				}]
			}, {
				// Scrape config for Kubelet cAdvisor.
				//
				// This is required for Kubernetes 1.7.3 and later, where cAdvisor metrics
				// (those whose names begin with 'container_') have been removed from the
				// Kubelet metrics endpoint.  This job scrapes the cAdvisor endpoint to
				// retrieve those metrics.
				//
				// In Kubernetes 1.7.0-1.7.2, these metrics are only exposed on the cAdvisor
				// HTTP endpoint; use "replacement: /api/v1/nodes/${1}:4194/proxy/metrics"
				// in that case (and ensure cAdvisor's HTTP server hasn't been disabled with
				// the --cadvisor-port=0 Kubelet flag).
				//
				// This job is not necessary and should be removed in Kubernetes 1.6 and
				// earlier versions, or it will cause the metrics to be scraped twice.
				job_name: "kubernetes-cadvisor"

				// Default to scraping over https. If required, just disable this or change to
				// `http`.
				scheme: "https"

				// This TLS & bearer token file config is used to connect to the actual scrape
				// endpoints for cluster components. This is separate to discovery auth
				// configuration because discovery & scraping are two separate concerns in
				// Prometheus. The discovery auth config is automatic if Prometheus runs inside
				// the cluster. Otherwise, more config options have to be provided within the
				// <kubernetes_sd_config>.
				tls_config ca_file: "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"
				bearer_token_file: "/var/run/secrets/kubernetes.io/serviceaccount/token"

				kubernetes_sd_configs: [{
					role: "node"
				}]

				relabel_configs: [{
					action: "labelmap"
					regex:  "__meta_kubernetes_node_label_(.+)"
				}, {
					target_label: "__address__"
					replacement:  "kubernetes.default.svc:443"
				}, {
					source_labels: ["__meta_kubernetes_node_name"]
					regex:        "(.+)"
					target_label: "__metrics_path__"
					replacement:  "/api/v1/nodes/${1}/proxy/metrics/cadvisor"
				}]
			}, {
				// Scrape config for service endpoints.
				//
				// The relabeling allows the actual service scrape endpoint to be configured
				// via the following annotations:
				//
				// * `prometheus.io/scrape`: Only scrape services that have a value of `true`
				// * `prometheus.io/scheme`: If the metrics endpoint is secured then you will need
				// to set this to `https` & most likely set the `tls_config` of the scrape config.
				// * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
				// * `prometheus.io/port`: If the metrics are exposed on a different port to the
				// service then set this appropriately.
				job_name: "kubernetes-service-endpoints"

				kubernetes_sd_configs: [{
					role: "endpoints"
				}]

				relabel_configs: [{
					source_labels: ["__meta_kubernetes_service_annotation_prometheus_io_scrape"]
					action: "keep"
					regex:  true
				}, {
					source_labels: ["__meta_kubernetes_service_annotation_prometheus_io_scheme"]
					action:       "replace"
					target_label: "__scheme__"
					regex:        "(https?)"
				}, {
					source_labels: ["__meta_kubernetes_service_annotation_prometheus_io_path"]
					action:       "replace"
					target_label: "__metrics_path__"
					regex:        "(.+)"
				}, {
					source_labels: ["__address__", "__meta_kubernetes_service_annotation_prometheus_io_port"]
					action:       "replace"
					target_label: "__address__"
					regex:        "([^:]+)(?::\\d+)?;(\\d+)"
					replacement:  "$1:$2"
				}, {
					action: "labelmap"
					regex:  "__meta_kubernetes_service_label_(.+)"
				}, {
					source_labels: ["__meta_kubernetes_namespace"]
					action:       "replace"
					target_label: "kubernetes_namespace"
				}, {
					source_labels: ["__meta_kubernetes_service_name"]
					action:       "replace"
					target_label: "kubernetes_name"
				}]
			}, {
				// Example scrape config for probing services via the Blackbox Exporter.
				//
				// The relabeling allows the actual service scrape endpoint to be configured
				// via the following annotations:
				//
				// * `prometheus.io/probe`: Only probe services that have a value of `true`
				job_name: "kubernetes-services"

				metrics_path: "/probe"
				params module: ["http_2xx"]

				kubernetes_sd_configs: [{
					role: "service"
				}]

				relabel_configs: [{
					source_labels: ["__meta_kubernetes_service_annotation_prometheus_io_probe"]
					action: "keep"
					regex:  true
				}, {
					source_labels: ["__address__"]
					target_label: "__param_target"
				}, {
					target_label: "__address__"
					replacement:  "blackbox-exporter.example.com:9115"
				}, {
					source_labels: ["__param_target"]
					target_label: "app"
				}, {
					action: "labelmap"
					regex:  "__meta_kubernetes_service_label_(.+)"
				}, {
					source_labels: ["__meta_kubernetes_namespace"]
					target_label: "kubernetes_namespace"
				}, {
					source_labels: ["__meta_kubernetes_service_name"]
					target_label: "kubernetes_name"
				}]
			}, {
				// Example scrape config for probing ingresses via the Blackbox Exporter.
				//
				// The relabeling allows the actual ingress scrape endpoint to be configured
				// via the following annotations:
				//
				// * `prometheus.io/probe`: Only probe services that have a value of `true`
				job_name: "kubernetes-ingresses"

				metrics_path: "/probe"
				params module: ["http_2xx"]

				kubernetes_sd_configs: [{
					role: "ingress"
				}]

				relabel_configs: [{
					source_labels: ["__meta_kubernetes_ingress_annotation_prometheus_io_probe"]
					action: "keep"
					regex:  true
				}, {
					source_labels: ["__meta_kubernetes_ingress_scheme", "__address__", "__meta_kubernetes_ingress_path"]
					regex:        "(.+);(.+);(.+)"
					replacement:  "${1}://${2}${3}"
					target_label: "__param_target"
				}, {
					target_label: "__address__"
					replacement:  "blackbox-exporter.example.com:9115"
				}, {
					source_labels: ["__param_target"]
					target_label: "app"
				}, {
					action: "labelmap"
					regex:  "__meta_kubernetes_ingress_label_(.+)"
				}, {
					source_labels: ["__meta_kubernetes_namespace"]
					target_label: "kubernetes_namespace"
				}, {
					source_labels: ["__meta_kubernetes_ingress_name"]
					target_label: "kubernetes_name"
				}]
			}, {
				// Example scrape config for pods
				//
				// The relabeling allows the actual pod scrape endpoint to be configured via the
				// following annotations:
				//
				// * `prometheus.io/scrape`: Only scrape pods that have a value of `true`
				// * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
				// * `prometheus.io/port`: Scrape the pod on the indicated port instead of the
				// pod's declared ports (default is a port-free target if none are declared).
				job_name: "kubernetes-pods"

				kubernetes_sd_configs: [{
					role: "pod"
				}]

				relabel_configs: [{
					source_labels: ["__meta_kubernetes_pod_annotation_prometheus_io_scrape"]
					action: "keep"
					regex:  true
				}, {
					source_labels: ["__meta_kubernetes_pod_annotation_prometheus_io_path"]
					action:       "replace"
					target_label: "__metrics_path__"
					regex:        "(.+)"
				}, {
					source_labels: ["__address__", "__meta_kubernetes_pod_annotation_prometheus_io_port"]
					action:       "replace"
					regex:        "([^:]+)(?::\\d+)?;(\\d+)"
					replacement:  "$1:$2"
					target_label: "__address__"
				}, {
					action: "labelmap"
					regex:  "__meta_kubernetes_pod_label_(.+)"
				}, {
					source_labels: ["__meta_kubernetes_namespace"]
					action:       "replace"
					target_label: "kubernetes_namespace"
				}, {
					source_labels: ["__meta_kubernetes_pod_name"]
					action:       "replace"
					target_label: "kubernetes_pod_name"
				}]
			}]
		}
	}
}