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pawan-mehta-dt authored Sep 23, 2024
2 parents 808945e + e269fe6 commit 9230e35
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22 changes: 22 additions & 0 deletions charts/calert/.helmignore
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# Patterns to ignore when building packages.
# This supports shell glob matching, relative path matching, and
# negation (prefixed with !). Only one pattern per line.
.DS_Store
# Common VCS dirs
.git/
.gitignore
.bzr/
.bzrignore
.hg/
.hgignore
.svn/
# Common backup files
*.swp
*.bak
*.tmp
*~
# Various IDEs
.project
.idea/
*.tmproj
.vscode/
19 changes: 19 additions & 0 deletions charts/calert/Chart.yaml
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apiVersion: v2
name: calert
version: 0.0.1
description: A Helm chart for the calert which uses Alertmanager webhook receiver to receive alerts payload, and pushes this data to Google Chat webhook endpoint.
type: application
keywords:
- monitoring
- alerting
- prometheus
- alertmanager
- alertmanager-webhook
- google-chat
home: https://github.com/mr-karan/calert
sources:
- https://github.com/mr-karan/calert
maintainers:
- name: Devtron Devops team
email: [email protected]
appVersion: 0.0.1
61 changes: 61 additions & 0 deletions charts/calert/README.md
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# calert

![Version: 2.0.3](https://img.shields.io/badge/Version-2.0.3-informational?style=flat-square) ![AppVersion: 2.0.2](https://img.shields.io/badge/AppVersion-2.0.2-informational?style=flat-square)

A Helm chart for the calert which uses Alertmanager webhook receiver to receive alerts payload, and pushes this data to Google Chat webhook endpoint.

**Source Code:** <https://github.com/mr-karan/calert>

# Alertmanager Integration

The Alertmanager helm chart can be found [here](https://github.com/prometheus-community/helm-charts/tree/main/charts/alertmanager). You can refer to the following config block to route webhook alerts to `calert`:

```yml
config:
receivers:
- name: 'calert'
webhook_configs:
- url: 'http://calert:6000/dispatch'

route:
receiver: 'calert'
group_wait: 30s
group_interval: 60s
repeat_interval: 3h
group_by: ['alertname']
```
# Parameters
The following tables lists the configurable parameters of the chart and their default values.
Change the values according to the need of the environment in ``contrib/helm/calert/values.yaml`` file.
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| app.address | string | `"0.0.0.0:6000"` | |
| app.server_timeout | string | `"60s"` | |
| app.enable_request_logs | bool | `true` | |
| app.log | string | `"info"` | |
| providers | object | `{}` | |
| templates | object | `{}` | |
| replicaCount | int | `1` | |
| image.repository | string | `"ghcr.io/mr-karan/calert"` | |
| image.tag | string | `"v2.0.2"` | |
| image.pullPolicy | string | `"Always"` | |
| args[0] | string | `"--config=/app/static/config.toml"` | |
| nameOverride | string | `""` | |
| fullnameOverride | string | `""` | |
| service.type | string | `"ClusterIP"` | |
| service.port | int | `6000` | |
| ingress.enabled | bool | `false` | |
| resources.limits.cpu | string | `"20m"` | |
| resources.limits.memory | string | `"48Mi"` | |
| resources.requests.cpu | string | `"5m"` | |
| resources.requests.memory | string | `"24Mi"` | |
| priorityClassName | string | `""` | |
| nodeSelector | object | `{}` | |
| tolerations | list | `[]` | |
| affinity | object | `{}` | |
| topologySpreadConstraints | list | `[]` | |
| podAnnotations | object | `{}` | |
15 changes: 15 additions & 0 deletions charts/calert/templates/NOTES.txt
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1. Get the application URL by running these commands:
{{- if contains "NodePort" .Values.service.type }}
export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "calert.fullname" . }})
export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
echo http://$NODE_IP:$NODE_PORT
{{- else if contains "LoadBalancer" .Values.service.type }}
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "calert.fullname" . }}'
export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "calert.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
echo http://$SERVICE_IP:{{ .Values.service.port }}
{{- else if contains "ClusterIP" .Values.service.type }}
export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "calert.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
echo "Visit http://127.0.0.1:{{ .Values.service.port }} to use your application"
kubectl port-forward $POD_NAME {{ .Values.service.port }}:{{ .Values.service.port }}
{{- end }}
45 changes: 45 additions & 0 deletions charts/calert/templates/_helpers.tpl
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{{/* vim: set filetype=mustache: */}}
{{/*
Expand the name of the chart.
*/}}
{{- define "calert.name" -}}
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
{{- end -}}

{{/*
Create a default fully qualified app name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
If release name contains chart name it will be used as a full name.
*/}}
{{- define "calert.fullname" -}}
{{- if .Values.fullnameOverride -}}
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}

{{/*
Create chart name and version as used by the chart label.
*/}}
{{- define "calert.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
{{- end -}}

{{/*
Common labels
*/}}
{{- define "calert.labels" -}}
app.kubernetes.io/name: {{ include "calert.name" . }}
helm.sh/chart: {{ include "calert.chart" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- if .Chart.AppVersion }}
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
{{- end }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
{{- end -}}
34 changes: 34 additions & 0 deletions charts/calert/templates/configmap.yaml
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apiVersion: v1
kind: ConfigMap
metadata:
name: {{ template "calert.fullname" . }}-config
labels:
app: {{ template "calert.name" . }}
chart: {{ template "calert.chart" . }}
heritage: {{ .Release.Service }}
release: {{ .Release.Name }}
data:
{{- range $key, $value := .Values.templates }}
{{ $key }}: |-
{{- $value | nindent 4 }}
{{- end }}
config.toml: |
# All timeouts and durations are in milliseconds.
[app]
address = {{ .Values.app.address | quote }}
server_timeout = {{ .Values.app.server_timeout | quote }}
enable_request_logs = {{ .Values.app.enable_request_logs | quote }}
log = {{ .Values.app.log | quote }}
{{- range $key, $value := .Values.providers }}
[providers.{{ $key }}]
type = {{ $value.type | default "google_chat" | quote }}
endpoint = {{ required "setting a endpoint for providers is requiered" $value.endpoint | quote }}
max_idle_conns = {{ $value.max_idle_conns | default "50" }}
timeout = {{ $value.timeout | default "30s" | quote }}
proxy_url = {{ $value.proxy_url | default "" | quote }}
template = {{ $value.template | default "static/message.tmpl" | quote }}
thread_ttl = {{ $value.thread_ttl | default "12h" | quote }}
dry_run = {{ $value.dry_run | default "false" | quote }}
{{- end }}
106 changes: 106 additions & 0 deletions charts/calert/templates/deployment.yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ include "calert.fullname" . }}
labels:
{{ include "calert.labels" . | indent 4 }}
spec:
replicas: {{ .Values.replicaCount }}
selector:
matchLabels:
app.kubernetes.io/name: {{ include "calert.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
template:
metadata:
annotations:
# https://helm.sh/docs/howto/charts_tips_and_tricks/#automatically-roll-deployments
checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
{{- range $key, $value := .Values.podAnnotations }}
{{ $key }}: {{ $value | quote }}
{{- end }}
labels:
app.kubernetes.io/name: {{ include "calert.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
spec:
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.priorityClassName }}
priorityClassName: {{ . }}
{{- end }}
{{- if .Values.securityContext.enabled }}
{{- with omit .Values.securityContext "enabled" }}
securityContext:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- end }}
containers:
- name: {{ .Chart.Name }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
args:
{{- range .Values.args }}
- {{ . | quote }}
{{- end }}
{{- if .Values.securityContext.enabled }}
{{- with omit .Values.securityContext "enabled" "runAsGroup" "runAsUser" "runAsNonRoot" "windowsOptions" }}
securityContext:
{{- toYaml . | nindent 12 }}
{{- end }}
{{- end }}
ports:
- containerPort: {{ .Values.service.port }}
protocol: TCP
volumeMounts:
- mountPath: /app/static/
name: config-dir
livenessProbe:
httpGet:
httpHeaders:
- name: X-Causation-ID
value: kube-health
path: "/ping"
port: {{ .Values.service.port }}
initialDelaySeconds: 10
periodSeconds: 60
timeoutSeconds: 3
readinessProbe:
httpGet:
httpHeaders:
- name: X-Causation-ID
value: kube-health
path: "/ping"
port: {{ .Values.service.port }}
initialDelaySeconds: 10
periodSeconds: 60
timeoutSeconds: 3
resources:
{{- toYaml .Values.resources | nindent 12 }}
volumes:
- name: config-dir
configMap:
name: {{ template "calert.fullname" . }}-config
items:
- key: config.toml
path: config.toml
{{- range $key, $value := .Values.templates }}
- key: {{ $key }}
path: {{ $key }}
{{- end }}
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.topologySpreadConstraints }}
topologySpreadConstraints:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.tolerations }}
tolerations:
{{- toYaml . | nindent 8 }}
{{- end }}
15 changes: 15 additions & 0 deletions charts/calert/templates/service.yaml
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apiVersion: v1
kind: Service
metadata:
name: {{ include "calert.fullname" . }}
labels:
{{ include "calert.labels" . | indent 4 }}
spec:
type: {{ .Values.service.type }}
ports:
- port: {{ .Values.service.port }}
targetPort: {{ .Values.service.port }}
protocol: TCP
selector:
app.kubernetes.io/name: {{ include "calert.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
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