support auto reload for config and scrape config (#61)

* support auto reload for config and scrape config

* f

charts/tencentcloud-exporter/Chart.yaml

@@ -15,13 +15,13 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.1.0
+version: 0.2.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
 appVersion: "v2.8.0"
-home: https://github.com/tencentyun/tencentcloud-exporter
+home: https://github.com/douban/tencentcloud-exporter
 maintainers:
   - name: LeoQuote

charts/tencentcloud-exporter/templates/deployment.yaml

@@ -13,10 +13,11 @@ spec:
       {{- include "tencentcloud-exporter.selectorLabels" . | nindent 6 }}
   template:
     metadata:
-      {{- with .Values.podAnnotations }}
       annotations:
-        {{- toYaml . | nindent 8 }}
-      {{- end }}
+        checksum/config: {{ .Values.extraConfigs | toString| sha256sum  }}
+        {{- if .Values.podAnnotations -}}
+        {{ toYaml .Values.podAnnotations | nindent 8 }}
+        {{- end }}
       labels:
         {{- include "tencentcloud-exporter.selectorLabels" . | nindent 8 }}
     spec:

charts/tencentcloud-exporter/templates/scrapeconfig.yaml

@@ -0,0 +1,23 @@
+{{- if .Values.scrapeConfig.enabled }}
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ScrapeConfig
+metadata:
+  labels:
+{{ include "tencentcloud-exporter.labels" . | indent 4 }}
+  name: {{ template "tencentcloud-exporter.fullname" . }}
+spec:
+  staticConfigs:
+  - targets:
+    - {{ include "tencentcloud-exporter.fullname" . }}.{{ .Release.Namespace }}:{{ .Values.service.port }}
+  metricsPath: {{ .Values.scrapeConfig.telemetryPath }}
+{{- if .Values.scrapeConfig.relabelings }}
+  relabelings:
+{{ toYaml .Values.scrapeConfig.relabelings | indent 4 }}
+{{- end }}
+{{- if .Values.scrapeConfig.metricRelabelings }}
+  metricRelabelings:
+{{ toYaml .Values.scrapeConfig.metricRelabelings | indent 4 }}
+{{- end }}
+  scrapeInterval: {{ .Values.scrapeConfig.interval }}
+  scrapeTimeout: {{ .Values.scrapeConfig.timeout }}
+{{- end }}

charts/tencentcloud-exporter/values.yaml

@@ -114,6 +114,22 @@ serviceMonitor:
   # targetLabels: []
   # metricRelabelings: []
 
+scrapeConfig:
+  # Use https://prometheus-operator.dev/docs/user-guides/scrapeconfig/ to congfigure scrapeConfig
+  # It is advbised to use scrapeConfig instead of servicemonitor, as it is more flexible
+  # ServiceMonitor and scrapeConfig can be enabled at the same time, but it is not recommended
+  # When set true then use a ScrapeConfig to configure scraping
+  enabled: false
+  timeout: 10s
+  interval: 1m
+  telemetryPath: /metrics
+  relabelings:
+  - regex: 'container|endpoint|pod|service|instance'
+    action: "labeldrop"
+  metricRelabelings:
+  - regex: 'instance'
+    action: "labeldrop"
+
 ## Custom PrometheusRules to be defined
 ## The value is evaluated as a template, so, for example, the value can depend on .Release or .Chart
 ## ref: https://github.com/coreos/prometheus-operator#customresourcedefinitions