Adding envoy port rules (#1315)

* Adding envoy port rules

* Update README.md with readme-generator-for-helm

Signed-off-by: dunefro <dunefro@users.noreply.github.com>

* Added grouping name

* Added grouping name

---------

Signed-off-by: dunefro <dunefro@users.noreply.github.com>
Co-authored-by: dunefro <dunefro@users.noreply.github.com>

Author: dunefro

charts/tfy-prometheus-config/Chart.yaml

@@ -1,4 +1,4 @@
 apiVersion: v2
 name: tfy-prometheus-config
 description: A Helm chart for Prometheus Config
-version: 0.1.16
+version: 0.1.17

charts/tfy-prometheus-config/README.md

@@ -53,6 +53,11 @@ This chart is used to configure prometheus. It is used to configure the scrape c
 | `prometheusRules.kubecostRules.name`         | Name of the prometheus rules         | `tfy-alertmanager-config-kubecost-rules` |
 | `prometheusRules.kubecostRules.labels`       | Labels for the prometheus rules      | `{}`                                     |
 | `prometheusRules.kubecostRules.annotations`  | Annotations for the prometheus rules | `{}`                                     |
+| `prometheusRules.envoyPortRules.enabled`     | Enable prometheus rules for alerts   | `true`                                   |
+| `prometheusRules.envoyPortRules.name`        | Name of the prometheus rules         | `tfy-envoy-port-rules`                   |
+| `prometheusRules.envoyPortRules.labels`      | Labels for the prometheus rules      | `{}`                                     |
+| `prometheusRules.envoyPortRules.annotations` | Annotations for the prometheus rules | `{}`                                     |
+| `prometheusRules.envoyPortRules.portList`    | List of common ports                 | `[]`                                     |
 
 ### serviceMonitors Service monitors for prometheus
 

charts/tfy-prometheus-config/templates/_helpers.tpl

@@ -308,6 +308,33 @@ Container rules annotations
 {{- end }}
 {{- end }}
 
+
+{{/*
+  Container rules labels
+*/}}
+{{- define "envoyPortRules.labels" -}}
+{{- if .Values.prometheusRules.envoyPortRules.labels }}
+{{- toYaml .Values.prometheusRules.envoyPortRules.labels }}
+{{- else if .Values.global.labels }}
+{{- toYaml .Values.global.labels }}
+{{- else }}
+{{- toYaml (dict "release" "prometheus") }}
+{{- end }}
+{{- end }}
+
+{{/*
+Container rules annotations
+*/}}
+{{- define "envoyPortRules.annotations" -}}
+{{- if .Values.prometheusRules.envoyPortRules.annotations }}
+{{- toYaml .Values.prometheusRules.envoyPortRules.annotations }}
+{{- else if .Values.global.annotations }}
+{{- toYaml .Values.global.annotations }}
+{{- else }}
+{}
+{{- end }}
+{{- end }}
+
 {{/*
   Kubecost rules labels
 */}}

charts/tfy-prometheus-config/templates/prometheusRules/envoy-port-rules.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.prometheusRules.envoyPortRules.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: {{ .Values.prometheusRules.envoyPortRules.name }}
+  labels:
+    {{- include "envoyPortRules.labels" . | nindent 4 }}
+  annotations:
+    {{- include "envoyPortRules.annotations" . | nindent 4 }}
+spec:
+  groups:
+    - name: tfy-envoy-port.rules
+      interval: 10s
+      rules:
+{{- range $port := .Values.prometheusRules.envoyPortRules.portList }}
+      - record: envoy_http_inbound_0_0_0_0_{{ $port }}_downstream_rq_total
+        expr: envoy_http_downstream_rq_total{http_conn_manager_prefix="inbound_0.0.0.0_{{ $port }}"}
+{{- end }}
+{{- end }}

charts/tfy-prometheus-config/values.yaml

@@ -159,6 +159,18 @@ prometheusRules:
     labels: {}
     ## @param prometheusRules.kubecostRules.annotations [object] Annotations for the prometheus rules
     annotations: {}
+  # prometheusRules.envoyPortRules Prometheus rules for alerts
+  envoyPortRules:
+    ## @param prometheusRules.envoyPortRules.enabled Enable prometheus rules for alerts
+    enabled: true
+    ## @param prometheusRules.envoyPortRules.name Name of the prometheus rules
+    name: tfy-envoy-port-rules
+    ## @param prometheusRules.envoyPortRules.labels [object] Labels for the prometheus rules
+    labels: {}
+    ## @param prometheusRules.envoyPortRules.annotations [object] Annotations for the prometheus rules
+    annotations: {}
+    ## @param prometheusRules.envoyPortRules.portList [array] List of common ports
+    portList: ["80", "443", "3000", "8000", "8080", "8443", "5000", "6000", "9000", "9090", "10000"]
 ## @section serviceMonitors Service monitors for prometheus
 serviceMonitors:
   ## @param serviceMonitors.enabled Enable service monitors for prometheus