Issue KN-767 feat: Added Terraform scripts and Helmcharts for one click installation

knowlg-automation/LICENSE

+MIT License
+
+Copyright (c) 2022 Sunbird Obsrv
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

knowlg-automation/README.md

+# sunbird-infra-provision
+
+Infra provision on Azure
+
+Pre-requisites:
+Install azure cli(az) tool on local machine and login to azure account with "az login" command.
+Create a azure service account to be used for the infra provision.
+Copy the ingestion spec to any folder and share the path in variables
+Replace the default values in infra-provision/azure/vars.tf .
+
+Steps:
+Run create shell script and provide option input as "azure" .
+
+
+Destroy infra on Azure
+Steps:
+Run destroy shell script with option as "azure" and append --auto-approve to continue without confirmation.
+
+
+Infra provision on local
+
+Pre-requisites:
+For local provision, kind provider is used to provision the cluster.
+Steps:
+Run shell script and provide option as "local"
+
+Destroy infra on local
+Steps:
+Run destroy shell script and provide option as "local" append --auto-approve to continue without confirmation.

knowlg-automation/helm_charts/cassandra/Chart.yaml

+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for Kubernetes
+name: cassandra
+version: 0.1.0
\ No newline at end of file

knowlg-automation/helm_charts/cassandra/templates/deployment.yaml

+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Chart.Name }}
+  namespace: {{ .Values.namespace }}
+spec: 
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Chart.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ .Chart.Name }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: cassandra:3.11.11
+          ports:
+            - containerPort: {{ .Values.network.port }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Chart.Name }}-db
+  namespace: {{ .Values.namespace }}
+  labels:
+    app: {{ .Chart.Name }}
+spec:
+  ports:
+    - port: {{ .Values.network.port }}
+  selector:
+    app: {{ .Chart.Name }}
\ No newline at end of file

knowlg-automation/helm_charts/cassandra/values.yaml

+namespace: knowlg-db
+replicaCount: 1
+network:
+  port: 9042
\ No newline at end of file

knowlg-automation/helm_charts/druid-cluster/.helmignore

+# 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/
\ No newline at end of file

knowlg-automation/helm_charts/druid-cluster/Chart.yaml

+name: druid-cluster
+version: 0.1.0
+appVersion: 0.21.1
+description: Helm chart to deploy a druid cluster on Kubernetes
+keywords:
+- druid
+- zookeeper
+- postgres
+maintainers:
+- name: druid-operator-maintainers
+sources:
+- https://github.com/druid-io/druid-operator
+engine: gotpl
+home: https://github.com/druid-io/druid-operator
+dependencies:
+- name: zookeeper
+  version: 10.0.0
+  repository: https://charts.bitnami.com/bitnami
+  condition: zookeeper.enabled

knowlg-automation/helm_charts/druid-cluster/templates/_helpers.tpl

+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "druid-cluster.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "name" -}}
+{{- default .Release.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 "druid-cluster.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 "druid-cluster.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+App config names
+*/}}
+{{- define "druid-cluster.appConfigName" -}}
+{{- $.Release.Name -}}
+{{- end -}}
+
+{{/*
+Selector labels
+*/}}
+{{- define "druid-cluster.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "druid-cluster.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}

knowlg-automation/helm_charts/druid-cluster/templates/historical_hpa.yaml

+# apiVersion: autoscaling/v2beta2
+# kind: HorizontalPodAutoscaler
+# metadata:
+#   name: "{{ .Release.Namespace }}-historicals"
+#   namespace: {{ .Values.namespace }} 
+# spec:
+#   scaleTargetRef:
+#     apiVersion: apps/v1
+#     kind: StatefulSet
+#     name: "{{ .Release.Namespace }}-{{ .Values.druid_env }}-historicals"
+#   # behavior:
+#   #   scaleUp:
+#   #     stabilizationWindowSeconds: 10
+#   #   scaleDown:
+#   #     stabilizationWindowSeconds: 20
+#   minReplicas: 1
+#   maxReplicas: 2
+#   metrics:
+#   - type: Object
+#     object:
+#       metric:
+#         name: pv_used_percentage
+#       describedObject:
+#         apiVersion: v1
+#         kind: persistentvolumeclaim
+#         name: "historical-volume-{{ .Release.Namespace }}-{{ .Values.druid_env }}-historicals-0"
+#       target:
+#         type: Utilization
+#         averageValue: 20

knowlg-automation/helm_charts/druid-operator/Chart.yaml

+apiVersion: v2
+name: druid-operator
+description: Druid Kubernetes Operator
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+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: 0.1.1
+
+# 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.
+appVersion: 0.0.7

knowlg-automation/helm_charts/druid-operator/templates/NOTES.txt

+Refer to https://github.com/druid-io/druid-operator/blob/master/docs/README.md to get started.

knowlg-automation/helm_charts/druid-operator/templates/_helpers.tpl

+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "druid-operator.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 "druid-operator.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 "druid-operator.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "druid-operator.labels" -}}
+helm.sh/chart: {{ include "druid-operator.chart" . }}
+{{ include "druid-operator.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "druid-operator.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "druid-operator.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "druid-operator.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "druid-operator.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

knowlg-automation/helm_charts/druid-operator/templates/deployment.yaml

+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  namespace: {{ .Release.Namespace }}
+  name: {{ include "druid-operator.fullname" . }}
+  labels:
+    {{- include "druid-operator.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "druid-operator.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "druid-operator.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "druid-operator.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          command:
+          - /manager
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            {{- range $key, $value :=  .Values.env }}
+            - name: {{ $key }}
+              value: {{ tpl $value $ | quote }}
+            {{- end }}
+            - name: POD_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

knowlg-automation/helm_charts/druid-operator/templates/role.yaml

+{{- if .Values.rbac.create }}
+apiVersion: rbac.authorization.k8s.io/v1
+{{- if .Values.env.WATCH_NAMESPACE }}
+kind: Role
+{{- else }}
+kind: ClusterRole
+{{- end }}
+metadata:
+{{- if .Values.env.WATCH_NAMESPACE }}
+  namespace: {{ .Values.env.WATCH_NAMESPACE }}
+{{- end }}
+  name: {{ template "druid-operator.fullname" . }}
+  labels:
+    {{- include "druid-operator.labels" . | nindent 4 }}
+rules:
+  - apiGroups:
+      - ""
+    resources:
+      - pods
+      - configmaps
+      - services
+      - persistentvolumeclaims
+    verbs:
+      - list
+      - watch
+      - create
+      - update
+      - delete
+  - apiGroups:
+      - ""
+    resources:
+      - events
+    verbs:
+      - create
+      - patch
+  - apiGroups:
+      - apps
+    resources:
+      - statefulsets
+      - deployments
+    verbs:
+      - list
+      - watch
+      - create
+      - update
+      - delete
+  - apiGroups:
+      - autoscaling
+    resources:
+      - horizontalpodautoscalers
+    verbs:
+      - list
+      - watch
+      - create
+      - update
+      - patch
+  - apiGroups:
+      - policy
+    resources:
+      - poddisruptionbudgets
+    verbs:
+      - list
+      - watch
+      - create
+      - update
+  - apiGroups:
+      - networking.k8s.io
+    resources:
+      - ingresses
+    verbs:
+      - list
+      - watch
+      - create
+      - update
+  - apiGroups:
+      - druid.apache.org
+    resources:
+      - druids
+    verbs:
+      - get
+      - list
+      - watch
+      - create
+      - update
+      - patch
+      - delete
+  - apiGroups:
+      - druid.apache.org
+    resources:
+      - druids/status
+    verbs:
+      - get
+      - update
+      - patch
+{{- end }}

knowlg-automation/helm_charts/druid-operator/templates/role_binding.yaml

+{{- if .Values.rbac.create }}
+apiVersion: rbac.authorization.k8s.io/v1
+{{- if .Values.env.WATCH_NAMESPACE }}
+kind: RoleBinding
+{{- else }}
+kind: ClusterRoleBinding
+{{- end }}
+metadata:
+{{- if .Values.env.WATCH_NAMESPACE }}
+  namespace: {{ .Values.env.WATCH_NAMESPACE }}
+{{- end }}
+  name: {{ template "druid-operator.fullname" . }}
+  labels:
+    {{- include "druid-operator.labels" . | nindent 4 }}
+subjects:
+- kind: ServiceAccount
+  name: {{ include "druid-operator.serviceAccountName" . }}
+  namespace: {{ .Release.Namespace }}
+roleRef:
+  kind: {{ if .Values.env.WATCH_NAMESPACE }} Role {{ else }} ClusterRole {{ end }}
+  name: {{ template "druid-operator.fullname" . }}
+  apiGroup: rbac.authorization.k8s.io
+{{- end }}