add karma chart (#6)

charts/karma/.helmignore

@@ -0,0 +1,21 @@
+# 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

charts/karma/Chart.yaml

@@ -0,0 +1,16 @@
+apiVersion: v2
+description: A Helm chart for Karma - an UI for Prometheus Alertmanager
+name: karma
+home: https://github.com/prymitive/karma
+sources:
+  - https://github.com/wiremind/wiremind-helm-charts/tree/main/charts/karma
+  - https://github.com/prymitive/karma
+version: 1.8.1
+appVersion: "0.85"
+maintainers:
+  - name: desaintmartin
+    email: [email protected]
+  - name: machine424
+    email: [email protected]
+  - name: francoisminaud
+    email: [email protected]

charts/karma/README.md

@@ -0,0 +1,102 @@
+# Karma
+
+Karma is an ASL2 licensed alert dashboard for Prometheus Alertmanager.
+
+## Introduction
+
+This chart deploys karma to your cluster via a Deployment and Service.
+Optionally you can also enable ingress.
+
+# Prerequisites
+
+- Kubernetes 1.9+
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`, run:
+
+```bash
+$ helm repo add wiremind https://wiremind.github.io/wiremind-helm-charts
+$ helm install --name my-release wiremind/karma
+```
+
+After a few seconds, you should see service statuses being written to the configured output.
+
+> **Tip**: List all releases using `helm list`
+
+## Uninstalling the Chart
+
+To uninstall/delete the `my-release` deployment:
+
+```bash
+$ helm delete my-release
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+The values.yaml lists the configurable parameters of the karma chart and their default values.
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
+
+```bash
+$ helm install --name my-release \
+    stable/karma
+```
+
+Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,
+
+```bash
+$ helm install --name my-release -f values.yaml stable/karma
+```
+
+> **Tip**: You will have to define the URL to alertmanager in env-settings in [values.yaml](values.yaml), under key ALERTMANAGER_URI .
+
+### Secure configuration
+
+If you have sensitive information in your Karma config you can wrap it in a Kubernetes Secret and then just point to the name of the Secret.
+
+The structure of the Secret must follow the same pattern defined in `configMap.rawConfig`, here's an example on how to generate this Secret
+with your Karma configuration:
+
+```sh
+# create a temporary file that contains your Karma configuration
+cat > karma.conf <<EOL
+alertmanager:
+  interval: 60s
+  servers:
+    - name: prod-alertmanager
+      uri: https://sensitive:[email protected]
+      timeout: 10s
+      proxy: true
+    - name: client-auth
+      uri: https://localhost:9093
+      timeout: 10s
+      tls:
+        ca: /etc/ssl/certs/ca-bundle.crt
+        cert: /etc/karma/client.pem
+        key: /etc/karma/client.key
+annotations:
+  default:
+    hidden: false
+  hidden:
+    - help
+  visible: []
+EOL
+
+# create a Secret from this file with the key `karma.conf`
+kubectl create secret generic sensitive-karma-config \
+    --from-file=karma.conf=./karma.conf
+```
+
+Next, point to the secret in your values file
+
+```yml
+# values.yaml
+existingSecretConfig:
+  enabled: true
+  secretName: sensitive-karma-config
+```
+
+**NOTE:** you can either use `existingSecretConfig` or `configMap`, it cannot be both.

charts/karma/ci/test-values.yaml

@@ -0,0 +1,3 @@
+env:
+- name: ALERTMANAGER_URI
+  value: http://monitoring-prometheus-alertmanager

charts/karma/templates/NOTES.txt

@@ -0,0 +1,19 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range .Values.ingress.hosts }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ . }}{{ $.Values.ingress.path }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "karma.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get svc -w {{ include "karma.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "karma.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 "karma.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl port-forward $POD_NAME 8080:80
+{{- end }}

charts/karma/templates/_helpers.tpl

@@ -0,0 +1,43 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "karma.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 "karma.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 "karma.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "karma.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+    {{ default (include "karma.fullname" .) .Values.serviceAccount.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceAccount.name }}
+{{- end -}}
+{{- end -}}

charts/karma/templates/configmap.yaml

@@ -0,0 +1,18 @@
+{{ if .Values.configMap.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  labels:
+    app: "{{ template "karma.fullname" . }}"
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    heritage: "{{ .Release.Service }}"
+    release: "{{ .Release.Name }}"
+{{- with .Values.configMap.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+  name: "{{ .Release.Name }}-config"
+data:
+  karma.conf: |
+{{ toYaml .Values.configMap.rawConfig | indent 4 }}
+{{- end }}

charts/karma/templates/deployment.yaml

@@ -0,0 +1,114 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "karma.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "karma.name" . }}
+    helm.sh/chart: {{ include "karma.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- with .Values.deployment.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "karma.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ include "karma.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+        {{- if .Values.podLabels -}}
+        {{ toYaml .Values.podLabels | nindent 8 }}
+        {{- end }}
+      {{- if or .Values.configMap.enabled .Values.podAnnotations }}
+      annotations:
+        {{- if .Values.configMap.enabled }}
+        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+        {{- end }}
+        {{- if .Values.podAnnotations -}}
+        {{ toYaml .Values.podAnnotations | nindent 8 }}
+        {{- end }}
+      {{- end }}
+    spec:
+      serviceAccountName: {{ template "karma.serviceAccountName" . }}
+      {{- if .Values.securityContext }}
+      securityContext:
+{{ toYaml .Values.securityContext | indent 8 }}
+      {{- end }}
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 8080
+              protocol: TCP
+          env:
+          {{- if or .Values.configMap.enabled .Values.existingSecretConfig.enabled }}
+          - name: CONFIG_FILE
+            value: /etc/karma/karma.conf
+          {{- end }}
+          {{- with .Values.env }}
+{{ toYaml . | indent 10 }}
+          {{- end }}
+          livenessProbe:
+            httpGet:
+              path: {{ .Values.livenessProbe.path }}
+              port: http
+            initialDelaySeconds: {{ .Values.livenessProbe.delay }}
+            periodSeconds: {{ .Values.livenessProbe.period }}
+          readinessProbe:
+            httpGet:
+              path: {{ .Values.livenessProbe.path }}
+              port: http
+            initialDelaySeconds: {{ .Values.livenessProbe.delay }}
+            periodSeconds: {{ .Values.livenessProbe.period }}
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+          volumeMounts:
+          {{- if or .Values.configMap.enabled .Values.existingSecretConfig.enabled }}
+            - name: karma-config
+              mountPath: /etc/karma
+          {{- end }}
+          {{- range .Values.certSecretNames }}
+            - name: {{ . }}
+              mountPath: /etc/certs/{{ . }}
+              readOnly: true
+          {{- end }}
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+      volumes:
+      {{- if and .Values.configMap.enabled .Values.existingSecretConfig.enabled }}
+      {{- fail "You can either use .Values.configMap or .Values.existingSecretConfig"}}
+      {{- end }}
+      {{- if .Values.configMap.enabled }}
+      - name: karma-config
+        configMap:
+          name: {{ .Release.Name }}-config
+      {{- end }}
+      {{- if .Values.existingSecretConfig.enabled }}
+      - name: karma-config
+        secret:
+          secretName: {{ .Values.existingSecretConfig.secretName }}
+      {{- end }}
+      {{- range .Values.certSecretNames }}
+      - name: {{ . }}
+        secret:
+          defaultMode: 420
+          secretName: {{ . }}
+      {{- end }}

charts/karma/templates/ingress.yaml

@@ -0,0 +1,38 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "karma.fullname" . -}}
+{{- $ingressPath := .Values.ingress.path -}}
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    app.kubernetes.io/name: {{ include "karma.name" . }}
+    helm.sh/chart: {{ include "karma.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- with .Values.ingress.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+{{- if .Values.ingress.tls }}
+  tls:
+  {{- range .Values.ingress.tls }}
+    - hosts:
+      {{- range .hosts }}
+        - {{ . | quote }}
+      {{- end }}
+      secretName: {{ .secretName }}
+  {{- end }}
+{{- end }}
+  rules:
+  {{- range .Values.ingress.hosts }}
+    - host: {{ . | quote }}
+      http:
+        paths:
+          - path: {{ $ingressPath }}
+            backend:
+              serviceName: {{ $fullName }}
+              servicePort: http
+  {{- end }}
+{{- end }}