SIENTIAPDE-1017

Enhance OPC ingestor with Redis authentication and update Helm chart configurations. Improve README for clarity on Docker and Kubernetes setup.
2025-04-25 13:26:42 -03:00
parent da079c6320
commit 9eb483ee92
15 changed files with 522 additions and 27 deletions
--- a/helm/.helmignore
+++ b/helm/.helmignore
@@ -0,0 +1,23 @@
+# 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
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
--- a/helm/Chart.yaml
+++ b/helm/Chart.yaml
@@ -0,0 +1,26 @@
+apiVersion: v2
+name: sientia-module
+description: A generic application helm for Kubernetes. Contains a set of templates
+  that can be used to deploy a generic sientia python module to a Kubernetes cluster,
+  based in some git repository and a generic docker image.
+
+# 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: 0.1.0
+
+# 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: "1.16.0"
--- a/helm/README.md
+++ b/helm/README.md
@@ -0,0 +1,73 @@
+# How to create an image and deploy this helm chart:
+
+## Image creation:
+### Generate your ssh key to Docker
+```
+ssh-keygen -t ed25519 -C "docker-access" -f ~/.ssh/id_ed25519_docker
+```
+
+Add the public key to yout Git SSH keys in your git platform
+
+### Enable Docker BuildKit
+```
+export DOCKER_BUILDKIT=1
+``` 
+or make it permanent:
+```
+echo '{ "features": { "buildkit": true } }' | sudo tee /etc/docker/daemon.json
+sudo systemctl restart docker
+```
+
+### Build and upload image
+```
+make -C docker
+```
+
+## SSH secrets:
+
+### Create secret to your git ssh credentials
+We need a dedicated keypair to access GitHub from a Kubernetes pod without exposing your user credentials or tokens.
+```
+ssh-keygen -t ed25519 -f git_key -C "k8s-deploy-key" -N ""
+```
+- ```-t ed25519```: modern, secure key type
+
+- ```-f git_key```: saves to git_key (private) and git_key.pub (public)
+
+- ```-C "..."```: comment to identify this key
+
+- ```-N ""```: no passphrase (for non-interactive use in pods)
+
+### Add the Public Key to GitHub (Read-Only Deploy Key)
+Deploy keys allow read-only access to a specific repo. This avoids using user tokens or giving broad permissions.
+
+1. Copy your public key:
+```
+cat git_key.pub
+```
+
+2. Go to your GitHub repo → Settings → Deploy Keys
+
+3. Click “Add deploy key”
+
+- Title: K8s ReadOnly
+
+- Key: paste your git_key.pub
+
+- ✅ Check “Allow read access”
+
+- ❌ Do NOT check “Allow write access”
+
+### Create a Kubernetes Secret from the Private Key
+Kubernetes Secrets securely store sensitive data like private keys. This secret will later be mounted into your pod for Git to use.
+```
+kubectl create secret generic git-ssh-key \
+  --namespace sientia-opc \
+  --from-file=ssh-privatekey=git_key \
+  --type=kubernetes.io/ssh-auth
+```
+- ```ssh-privatekey```: required key name for type kubernetes.io/ssh-auth
+
+- Secret is base64-encoded and stored in Kubernetes (not encrypted unless you're using an external secret manager or encryption at rest is enabled)
+
+
--- a/helm/files/github_known_hosts
+++ b/helm/files/github_known_hosts
@@ -0,0 +1,3 @@
+github.com ssh-rsa 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
+github.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg=
+github.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl
--- a/helm/templates/_helpers.tpl
+++ b/helm/templates/_helpers.tpl
@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "sientia-module.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 "sientia-module.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 "sientia-module.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "sientia-module.labels" -}}
+helm.sh/chart: {{ include "sientia-module.chart" . }}
+{{ include "sientia-module.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "sientia-module.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "sientia-module.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "sientia-module.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "sientia-module.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
--- a/helm/templates/deployment.yaml
+++ b/helm/templates/deployment.yaml
@@ -0,0 +1,92 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Values.nameOverride | default (include "sientia-module.fullname" .) }}
+  labels:
+    {{- include "sientia-module.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "sientia-module.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "sientia-module.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "sientia-module.serviceAccountName" . }}
+      {{- with .Values.podSecurityContext }}
+      securityContext:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      containers:
+        - name: {{ .Chart.Name }}
+          {{- with .Values.securityContext }}
+          securityContext:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            {{- toYaml .Values.env | nindent 12 }}
+          {{- with .Values.livenessProbe }}
+          livenessProbe:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          {{- with .Values.readinessProbe }}
+          readinessProbe:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          {{- with .Values.resources }}
+          resources:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          volumeMounts:
+            {{- if .Values.ssh.enabled }}
+            - name: ssh-key
+              mountPath: {{ .Values.ssh.sshPath }}
+              readOnly: true
+            - name: ssh-known-hosts
+              mountPath: {{ .Values.ssh.knownHostsPath }}
+              readOnly: true
+            {{- end }}
+      volumes:
+        {{- if .Values.ssh.enabled }}
+        - name: ssh-key
+          secret:
+            secretName: {{ .Values.ssh.secretName }}
+            items:
+              - key: ssh-privatekey
+                path: id_ed25519
+        - name: ssh-known-hosts
+          configMap:
+            name: {{ include "sientia-module.fullname" . }}-ssh-known-hosts
+            items:
+              - key: known_hosts
+                path: known_hosts
+        {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
--- a/helm/templates/hpa.yaml
+++ b/helm/templates/hpa.yaml
@@ -0,0 +1,32 @@
+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "sientia-module.fullname" . }}
+  labels:
+    {{- include "sientia-module.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "sientia-module.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}
--- a/helm/templates/know-hosts-configmap.yaml
+++ b/helm/templates/know-hosts-configmap.yaml
@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "sientia-module.fullname" . }}-ssh-known-hosts
+data:
+  known_hosts: |
+{{ .Files.Get "files/github_known_hosts" | indent 4 }}
--- a/helm/templates/service.yaml
+++ b/helm/templates/service.yaml
@@ -0,0 +1,14 @@
+{{- if .Values.service.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: "{{ .Values.nameOverride }}-service"
+  namespace: "{{ .Values.namespace }}"
+spec:
+  selector:
+    app: "{{ .Values.nameOverride }}"
+  ports:
+  - port: {{ .Values.service.port | int }}
+    targetPort: {{ .Values.service.targetPort | int }}
+  type: "{{ .Values.service.type }}"
+{{- end }}
--- a/helm/templates/serviceaccount.yaml
+++ b/helm/templates/serviceaccount.yaml
@@ -0,0 +1,13 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "sientia-module.serviceAccountName" . }}
+  labels:
+    {{- include "sientia-module.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+automountServiceAccountToken: {{ .Values.serviceAccount.automount }}
+{{- end }}
--- a/helm/values.yaml
+++ b/helm/values.yaml
@@ -0,0 +1,145 @@
+# Default values for sientia-module.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+# This will set the replicaset count more information can be found here: https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/
+replicaCount: 1
+
+# This sets the container image more information can be found here: https://kubernetes.io/docs/concepts/containers/images/
+image:
+  repository: aignosi.azurecr.io/sientia-module
+  # This sets the pull policy for images.
+  pullPolicy: Always
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: "0.0.1"
+
+# This is for the secrets for pulling an image from a private repository more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+imagePullSecrets:
+- name: docker-hub-secret
+# This is to override the chart name.
+nameOverride: "sientia-opc-ingestor"
+fullnameOverride: "sientia-opc-ingestor"
+namespace: sientia-opc
+
+# This section builds out the service account more information can be found here: https://kubernetes.io/docs/concepts/security/service-accounts/
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: true
+  # Automatically mount a ServiceAccount's API credentials?
+  automount: true
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: "sientia-opc-ingestor"
+
+# This is for setting Kubernetes Annotations to a Pod.
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+podAnnotations: {}
+# This is for setting Kubernetes Labels to a Pod.
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
+podLabels: {}
+
+podSecurityContext: {}
+  # fsGroup: 2000
+
+securityContext: {}
+  # capabilities:
+  #   drop:
+  #   - ALL
+  # readOnlyRootFilesystem: true
+  # runAsNonRoot: true
+  # runAsUser: 1000
+
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+# This is to setup the liveness and readiness probes more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
+livenessProbe:
+  tcpSocket:
+    port: 4840
+  initialDelaySeconds: 150
+  periodSeconds: 15
+
+readinessProbe:
+  tcpSocket:
+    port: 4840
+  initialDelaySeconds: 120
+  periodSeconds: 10
+
+# This section is for setting up autoscaling more information can be found here: https://kubernetes.io/docs/concepts/workloads/autoscaling/
+autoscaling:
+  enabled: false
+  minReplicas: 1
+  maxReplicas: 100
+  targetCPUUtilizationPercentage: 80
+  # targetMemoryUtilizationPercentage: 80
+
+# Additional volumes on the output Deployment definition.
+volumes: []
+# - name: foo
+#   secret:
+#     secretName: mysecret
+#     optional: false
+
+# Additional volumeMounts on the output Deployment definition.
+volumeMounts: []
+# - name: foo
+#   mountPath: "/etc/foo"
+#   readOnly: true
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+service:
+  enabled: false
+  type: ClusterIP
+  port: 4840
+  targetPort: 4840
+  
+
+env:
+  # Entrypoint variables 
+  - name: GITHUB_REPO_URL
+    value: git@github.com:Aignosi/sientia-dataops-opc-ingestor.git
+  - name: GITHUB_BRANCH
+    value: SIENTIAPDE-988-criar-ingestor-opc
+  - name: PYTHON_APP
+    value: ingestor.app
+
+  # Application variables
+  - name: KAFKA_SERVERS
+    value: kafka.kafka.svc.cluster.local:9092
+  - name: REDIS_HOST
+    value: redis-master.redis.svc.cluster.local
+  - name: REDIS_PORT
+    value: "6379"
+  - name: LEASE_TTL
+    value: 10
+  - name: HEARTBEAT_TTL
+    value: 20
+  - name: POLL_INTERVAL
+    value: 5
+
+
+ssh:
+  enabled: true
+  secretName: git-ssh-key-temp
+  sshPath: /mnt/.ssh
+  knownHostsPath: /mnt/known_hosts
+
+# kubectl create secret docker-registry docker-hub-secret --namespace sientia-opc --docker-server=http://aignosi.azurecr.io --docker-username=aignosi --docker-password=5I5zpQ6sRaHqX1hD3dr+2mo647yO3FRc359/wu6gsP+ACRDRz5mp
+# helm upgrade --install sientia-dataops-opc-simulator ./sientia-module -n sientia-opc --create-namespace