ramirocastillo93 · ramirocastillo93 · Feb 23, 2023 · Feb 24, 2023 · Feb 25, 2023 · Feb 25, 2023
diff --git a/app/config.py b/app/config.py
diff --git a/app/database.ini b/app/database.ini
diff --git a/app/deployment/dev.tfvars b/app/deployment/dev.tfvars
@@ -0,0 +1,5 @@
+env = "dev"
+k8s_secret_name = "gcr-json-key"
+k8s_secret_password = "key.json"
+k8s_secret_server = "gcr.io"
+k8s_secret_username = "_json_key"
diff --git a/app/deployment/helm/Chart.yaml b/app/deployment/helm/Chart.yaml
@@ -0,0 +1,5 @@
+apiVersion: v2
+name: flask-api-chart
+description: A Helm chart for deploying Flash application to GKE
+version: 1.0.0
+appVersion: 0.0.1
diff --git a/app/deployment/helm/templates/deployment.yaml b/app/deployment/helm/templates/deployment.yaml
@@ -0,0 +1,38 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Values.app.name }}
+  namespace: {{ .Values.app.namespace }}
+  labels:
+    app: {{ .Values.app.name }}
+spec:
+  replicas: {{ .Values.app.replicas }}
+  selector:
+    matchLabels:
+      app: {{ .Values.app.name }}
+  template:
+    metadata:
+      labels:
+        app: {{ .Values.app.name }}
+    spec:
+      imagePullSecrets:
+        - name: {{ .Values.imagePullSecrets.name }}
+      containers:
+      - name: {{ .Values.app.name }}
+        image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        env:
+          - name: POSTGRES_USER
+            value: "{{ .Values.database.user }}"
+          - name: POSTGRES_PASSWORD
+            value: "{{ .Values.database.password }}"
+          - name: POSTGRES_HOST
+            value: "{{ .Values.database.host }}"
+          - name: POSTGRES_DB
+            value: "{{ .Values.database.dbname }}"
+          - name: POSTGRES_PORT
+            value: "{{ .Values.database.port }}"
+        resources:
+          limits:
+            cpu: "{{ .Values.app.resources.cpu }}"
+            memory: "{{ .Values.app.resources.memory }}"
diff --git a/app/deployment/helm/templates/hpa.yaml b/app/deployment/helm/templates/hpa.yaml
@@ -0,0 +1,21 @@
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ .Values.hpa.name }}
+  namespace: {{ .Values.hpa.namespace }}
+  labels:
+    app: {{ .Values.app.name }}
+spec:
+  scaleTargetRef:
+    kind: {{ .Values.hpa.targetKind }}
+    name: {{ .Values.hpa.targetName }}
+    apiVersion: {{ .Values.hpa.targetAPIVersion }}
+  minReplicas: {{ .Values.hpa.minReplicas }}
+  maxReplicas: {{ .Values.hpa.maxReplicas }}
+  metrics:
+  - type: Resource
+    resource:
+      name: {{ .Values.hpa.metricName }}
+      target:
+        type: {{ .Values.hpa.metricType }}
+        averageValue: {{ .Values.hpa.metricAverageValue }}
diff --git a/app/deployment/helm/templates/service.yaml b/app/deployment/helm/templates/service.yaml
@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Values.service.name }}
+  namespace: {{ .Values.service.namespace }}
+  labels:
+    app: {{ .Values.app.name }}
+spec:
+  selector:
+    app: {{ .Values.app.name }}
+  type: {{ .Values.service.type }}
+  ports:
+    - name: tcp
+      protocol: TCP
+      port: {{ .Values.service.tcpPort }}
+      targetPort: {{ .Values.service.targetPort }}
+    - name: http
+      port: {{ .Values.service.httpPort }}
+      targetPort: {{ .Values.service.targetPort }}
diff --git a/app/deployment/helm/values.yaml b/app/deployment/helm/values.yaml
@@ -0,0 +1,42 @@
+app:
+  name: flask-api
+  namespace: default
+  replicas: 3
+  resources:
+    cpu: "0.1"
+    memory: "64Mi"
+
+image:
+  repository: gcr.io/developing-stuff/flask-api
+  tag: v0.0.2
+  pullPolicy: Always
+
+database:
+  user: admin
+  password: admin
+  host: 10.30.244.110
+  port: "5432"
+  dbname: databesos
+
+imagePullSecrets:
+  name: gcr-json-key
+
+service:
+  name: flask-api-service
+  namespace: default
+  type: LoadBalancer
+  tcpPort: 25443
+  httpPort: 80
+  targetPort: 5000
+
+hpa:
+  name: flask-api-hpa
+  namespace: default
+  targetKind: Deployment
+  targetName: flask-api
+  targetAPIVersion: apps/v1
+  minReplicas: 1
+  maxReplicas: 5
+  metricName: cpu
+  metricType: AverageValue
+  metricAverageValue: 40m
diff --git a/app/deployment/helm/values/dev.yaml b/app/deployment/helm/values/dev.yaml
@@ -0,0 +1,42 @@
+app:
+  name: flask-api
+  namespace: default
+  replicas: 3
+  resources:
+    cpu: "0.1"
+    memory: "64Mi"
+
+image:
+  repository: gcr.io/developing-stuff/flask-api
+  tag: v0.0.2
+  pullPolicy: Always
+
+database:
+  user: admin
+  password: admin
+  host: bitnami-postgresql.default.svc.cluster.local
+  port: "5432"
+  dbname: databesos
+
+imagePullSecrets:
+  name: gcr-json-key
+
+service:
+  name: flask-api-service
+  namespace: default
+  type: LoadBalancer
+  tcpPort: 25443
+  httpPort: 80
+  targetPort: 5000
+
+hpa:
+  name: flask-api-hpa
+  namespace: default
+  targetKind: Deployment
+  targetName: flask-api
+  targetAPIVersion: apps/v1
+  minReplicas: 1
+  maxReplicas: 5
+  metricName: cpu
+  metricType: AverageValue
+  metricAverageValue: 40m
diff --git a/app/deployment/helm/values/prod.yaml b/app/deployment/helm/values/prod.yaml
@@ -0,0 +1,42 @@
+app:
+  name: flask-api
+  namespace: default
+  replicas: 3
+  resources:
+    cpu: "0.1"
+    memory: "64Mi"
+
+image:
+  repository: gcr.io/developing-stuff/flask-api
+  tag: v0.0.2
+  pullPolicy: Always
+
+database:
+  user: admin
+  password: admin
+  host: bitnami-postgresql.default.svc.cluster.local
+  port: "5432"
+  dbname: databesos
+
+imagePullSecrets:
+  name: gcr-json-key
+
+service:
+  name: flask-api-service
+  namespace: default
+  type: LoadBalancer
+  tcpPort: 25443
+  httpPort: 80
+  targetPort: 5000
+
+hpa:
+  name: flask-api-hpa
+  namespace: default
+  targetKind: Deployment
+  targetName: flask-api
+  targetAPIVersion: apps/v1
+  minReplicas: 1
+  maxReplicas: 5
+  metricName: cpu
+  metricType: AverageValue
+  metricAverageValue: 40m
diff --git a/app/deployment/main.tf b/app/deployment/main.tf
@@ -0,0 +1,12 @@
+module "flask-app" {
+  source = "../modules/flask-app"
+  env    = var.env
+}
+
+module "gke_secret" {
+  source              = "../modules/gke-secret"
+  k8s_secret_name     = var.k8s_secret_name
+  k8s_secret_password = var.k8s_secret_password
+  k8s_secret_server   = var.k8s_secret_server
+  k8s_secret_username = var.k8s_secret_username
+}
diff --git a/app/deployment/prod.tfvars b/app/deployment/prod.tfvars
@@ -0,0 +1,5 @@
+env                 = "prod"
+k8s_secret_name     = "gcr-json-key"
+k8s_secret_password = "key.json"
+k8s_secret_server   = "gcr.io"
+k8s_secret_username = "_json_key"
diff --git a/app/deployment/providers.tf b/app/deployment/providers.tf
@@ -0,0 +1,7 @@
+# https://registry.terraform.io/providers/hashicorp/helm/latest/docs
+provider "helm" {
+  kubernetes {
+    config_path = var.kubeconfig_path
+  }
+  alias = "gke"
+}
diff --git a/app/deployment/variables.tf b/app/deployment/variables.tf
@@ -0,0 +1,29 @@
+variable "env" {
+  description = "Environment variable"
+  type        = string
+
+  validation {
+    condition     = contains(["prod", "dev"], var.env)
+    error_message = "Error! \"${var.env}\" not in acceptable values: \"prod\", \"env\""
+  }
+}
+
+variable "k8s_secret_name" {
+  type        = string
+  description = "Kubernetes secret name"
+}
+
+variable "k8s_secret_server" {
+  type        = string
+  description = "Kubernetes server name"
+}
+
+variable "k8s_secret_username" {
+  type        = string
+  description = "Kubernetes username"
+}
+
+variable "k8s_secret_password" {
+  type        = string
+  description = "Kubernetes password"
+}
diff --git a/app/deployment/version.tf b/app/deployment/version.tf
@@ -0,0 +1,14 @@
+# https://www.terraform.io/docs/language/settings/index.html
+terraform {
+  required_version = ">= 1.0.0"
+  required_providers {
+    helm = {
+      source  = "hashicorp/helm"
+      version = "~> 2.3.0"
+    }
+  }
+  backend "gcs" {
+    bucket = "tf-flask-app-v1"
+    prefix = "app_state"
+  }
+}
diff --git a/app/functions.py b/app/functions.py