[alertmanager] add servicemonitor

Signed-off-by: junot <[email protected]>

charts/alertmanager/Chart.yaml

@@ -6,7 +6,7 @@ icon: https://raw.githubusercontent.com/prometheus/prometheus.github.io/master/a
 sources:
   - https://github.com/prometheus/alertmanager
 type: application
-version: 1.8.2
+version: 1.8.3
 appVersion: v0.26.0
 kubeVersion: ">=1.19.0-0"
 keywords:

charts/alertmanager/templates/_helpers.tpl

@@ -90,3 +90,22 @@ Allow overriding alertmanager namespace
 {{- .Release.Namespace -}}
 {{- end -}}
 {{- end -}}
+
+{{/* Sets default scrape limits for servicemonitor */}}
+{{- define "servicemonitor.scrapeLimits" -}}
+{{- with .sampleLimit }}
+sampleLimit: {{ . }}
+{{- end }}
+{{- with .targetLimit }}
+targetLimit: {{ . }}
+{{- end }}
+{{- with .labelLimit }}
+labelLimit: {{ . }}
+{{- end }}
+{{- with .labelNameLengthLimit }}
+labelNameLengthLimit: {{ . }}
+{{- end }}
+{{- with .labelValueLengthLimit }}
+labelValueLengthLimit: {{ . }}
+{{- end }}
+{{- end }}

charts/alertmanager/templates/servicemonitor.yaml

@@ -0,0 +1,64 @@
+{{- if .Values.prometheus.monitor.enabled }}
+{{- $apiVersion := .Values.prometheus.monitor.apiVersion | default "monitoring.coreos.com/v1" }}
+{{- if .Capabilities.APIVersions.Has (printf "%s/ServiceMonitor" $apiVersion) }}
+apiVersion: {{ $apiVersion }}
+kind: ServiceMonitor
+metadata:
+  name: {{ include "alertmanager.fullname" . }}
+  namespace: {{ include "alertmanager.namespace" . }}
+  labels:
+    {{- include "alertmanager.labels" . | nindent 4 }}
+    {{- with .Values.prometheus.monitor.additionalLabels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+spec:
+  jobLabel: {{ default "app.kubernetes.io/name" .Values.prometheus.monitor.jobLabel }}
+  {{- include "servicemonitor.scrapeLimits" .Values.prometheus.monitor | nindent 2 }}
+  {{- with .Values.prometheus.monitor.podTargetLabels }}
+  podTargetLabels:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  selector:
+    matchLabels:
+    {{- with .Values.prometheus.monitor.selectorOverride }}
+      {{- toYaml . | nindent 6 }}
+    {{- else }}
+      {{- include "alertmanager.selectorLabels" . | nindent 6 }}
+    {{- end }}
+  {{- with .Values.prometheus.monitor.attachMetadata }}
+  attachMetadata:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  endpoints:
+    - port: http
+      scheme: {{ .Values.prometheus.monitor.scheme }}
+      {{- with .Values.prometheus.monitor.basicAuth }}
+      basicAuth:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.bearerTokenFile }}
+      bearerTokenFile: {{ . }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.tlsConfig }}
+      tlsConfig:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.proxyUrl }}
+      proxyUrl: {{ . }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.interval }}
+      interval: {{ . }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.scrapeTimeout }}
+      scrapeTimeout: {{ . }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.relabelings }}
+      relabelings:
+        {{- tpl (toYaml .) $ | nindent 8 }}
+      {{- end }}
+      {{- with .Values.prometheus.monitor.metricRelabelings }}
+      metricRelabelings:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+{{- end }}
+{{- end }}

charts/alertmanager/values.schema.json

@@ -143,7 +143,11 @@
             "type": "string"
         },
         "global": {
-            "properties": {},
+            "properties": {
+                "imagePullSecrets": {
+                    "type": "array"
+                }
+            },
             "type": "object"
         },
         "hostAliases": {
@@ -338,6 +342,105 @@
         "priorityClassName": {
             "type": "string"
         },
+        "prometheus": {
+            "properties": {
+                "monitor": {
+                    "properties": {
+                        "additionalLabels": {
+                            "properties": {
+                                "app.kubernetes.io/vendor": {
+                                    "type": "string"
+                                }
+                            },
+                            "type": "object"
+                        },
+                        "apiVersion": {
+                            "type": "string"
+                        },
+                        "attachMetadata": {
+                            "properties": {},
+                            "type": "object"
+                        },
+                        "basicAuth": {
+                            "properties": {},
+                            "type": "object"
+                        },
+                        "bearerTokenFile": {
+                            "type": "null"
+                        },
+                        "enabled": {
+                            "type": "boolean"
+                        },
+                        "interval": {
+                            "type": "string"
+                        },
+                        "jobLabel": {
+                            "type": "string"
+                        },
+                        "labelLimit": {
+                            "type": "integer"
+                        },
+                        "labelNameLengthLimit": {
+                            "type": "integer"
+                        },
+                        "labelValueLengthLimit": {
+                            "type": "integer"
+                        },
+                        "metricRelabelings": {
+                            "type": "array"
+                        },
+                        "podTargetLabels": {
+                            "type": "array"
+                        },
+                        "proxyUrl": {
+                            "type": "string"
+                        },
+                        "relabelings": {
+                            "items": {
+                                "properties": {
+                                    "action": {
+                                        "type": "string"
+                                    },
+                                    "regex": {
+                                        "type": "string"
+                                    },
+                                    "sourceLabels": {
+                                        "items": {
+                                            "type": "string"
+                                        },
+                                        "type": "array"
+                                    }
+                                },
+                                "type": "object"
+                            },
+                            "type": "array"
+                        },
+                        "sampleLimit": {
+                            "type": "integer"
+                        },
+                        "scheme": {
+                            "type": "string"
+                        },
+                        "scrapeTimeout": {
+                            "type": "string"
+                        },
+                        "selectorOverride": {
+                            "properties": {},
+                            "type": "object"
+                        },
+                        "targetLimit": {
+                            "type": "integer"
+                        },
+                        "tlsConfig": {
+                            "properties": {},
+                            "type": "object"
+                        }
+                    },
+                    "type": "object"
+                }
+            },
+            "type": "object"
+        },
         "readinessProbe": {
             "properties": {
                 "httpGet": {

charts/alertmanager/values.yaml

@@ -375,3 +375,64 @@ testFramework:
   annotations:
     "helm.sh/hook": test-success
     # "helm.sh/hook-delete-policy": "before-hook-creation,hook-succeeded"
+
+prometheus:
+  monitor:
+    enabled: true
+
+    additionalLabels:
+      app.kubernetes.io/vendor: kubesphere
+
+    jobLabel: ""
+
+    # List of pod labels to add to node exporter metrics
+    # https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#servicemonitor
+    podTargetLabels: []
+
+    scheme: http
+    basicAuth: {}
+    bearerTokenFile:
+    tlsConfig: {}
+
+    ## proxyUrl: URL of a proxy that should be used for scraping.
+    ##
+    proxyUrl: ""
+
+    ## Override serviceMonitor selector
+    ##
+    selectorOverride: {}
+
+    ## Attach node metadata to discovered targets. Requires Prometheus v2.35.0 and above.
+    ##
+    attachMetadata: {}
+
+    relabelings:
+    - sourceLabels:
+      - service
+      regex: '^{{ include "alertmanager.fullname" . }}-headless$'
+      action: keep
+    metricRelabelings: []
+    interval: ""
+    scrapeTimeout: 10s
+    ## prometheus.monitor.apiVersion ApiVersion for the serviceMonitor Resource(defaults to "monitoring.coreos.com/v1")
+    apiVersion: ""
+
+    ## SampleLimit defines per-scrape limit on number of scraped samples that will be accepted.
+    ##
+    sampleLimit: 0
+
+    ## TargetLimit defines a limit on the number of scraped targets that will be accepted.
+    ##
+    targetLimit: 0
+
+    ## Per-scrape limit on number of labels that will be accepted for a sample. Only valid in Prometheus versions 2.27.0 and newer.
+    ##
+    labelLimit: 0
+
+    ## Per-scrape limit on length of labels name that will be accepted for a sample. Only valid in Prometheus versions 2.27.0 and newer.
+    ##
+    labelNameLengthLimit: 0
+
+    ## Per-scrape limit on length of labels value that will be accepted for a sample. Only valid in Prometheus versions 2.27.0 and newer.
+    ##
+    labelValueLengthLimit: 0