From 92a9d51e80480f837e1181c9d74305555e379ac7 Mon Sep 17 00:00:00 2001
From: Jesus Galaz <jesusgalazr@icloud.com>
Date: Fri, 13 Dec 2024 20:26:26 +0100
Subject: [PATCH] feat(kubernetes): complete Kubernetes setup for todo-app with
Minikube
- Added Kubernetes deployment specs for `todo-app` and `mongodb`
- Configured NodePort service for external access
- Verified application functionality using `minikube service`
- Enabled persistent storage for MongoDB using PersistentVolumeClaim
- Removed unused `ingress.yml` file
- Provided compatibility for ARM64 and Linux environments
---
docker-compose.yml | 47 -----------------------------------------
mongodb-deployment.yml | 44 ++++++++++++++++++++++++++++++++++++++
mongodb-service.yml | 10 +++++++++
nginx.conf | 38 ---------------------------------
todo-app-deployment.yml | 25 ++++++++++++++++++++++
todo-app-service.yml | 11 ++++++++++
6 files changed, 90 insertions(+), 85 deletions(-)
delete mode 100644 docker-compose.yml
create mode 100644 mongodb-deployment.yml
create mode 100644 mongodb-service.yml
delete mode 100644 nginx.conf
create mode 100644 todo-app-deployment.yml
create mode 100644 todo-app-service.yml
diff --git a/docker-compose.yml b/docker-compose.yml
deleted file mode 100644
index fc10e49..0000000
--- a/docker-compose.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-services:
- mongodb:
- image: mongo:latest
- container_name: mongodb
- ports:
- - "27017:27017"
- environment:
- - MONGO_INITDB_ROOT_USERNAME=${MONGO_INITDB_ROOT_USERNAME}
- - MONGO_INITDB_ROOT_PASSWORD=${MONGO_INITDB_ROOT_PASSWORD}
- - MONGO_INITDB_DATABASE=todo-app
-
- todo-app-1:
- build:
- context: .
- dockerfile: Dockerfile
- container_name: todo-app-1
- ports:
- - "3001:3000"
- depends_on:
- - mongodb
- environment:
- - MONGO_URI=${MONGO_URI}
- - PORT=3000
-
- todo-app-2:
- build:
- context: .
- dockerfile: Dockerfile
- container_name: todo-app-2
- ports:
- - "3002:3000"
- depends_on:
- - mongodb
- environment:
- - MONGO_URI=${MONGO_URI}
-
- nginx:
- image: nginx:latest
- container_name: nginx
- ports:
- - "80:80"
- depends_on:
- - todo-app-1
- - todo-app-2
- volumes:
- - "./nginx.conf:/etc/nginx/nginx.conf:ro"
- - "/var/log/nginx/access.log:/var/log/nginx/access.log"
diff --git a/mongodb-deployment.yml b/mongodb-deployment.yml
new file mode 100644
index 0000000..58fa9fd
--- /dev/null
+++ b/mongodb-deployment.yml
@@ -0,0 +1,44 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+ name: mongo-pvc
+spec:
+ accessModes:
+ - ReadWriteOnce
+ resources:
+ requests:
+ storage: 1Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+ name: mongodb
+ labels:
+ app: mongodb
+spec:
+ replicas: 1
+ selector:
+ matchLabels:
+ app: mongodb
+ template:
+ metadata:
+ labels:
+ app: mongodb
+ spec:
+ containers:
+ - name: mongodb
+ image: mongo:latest
+ ports:
+ - containerPort: 27017
+ env:
+ - name: MONGO_INITDB_ROOT_USERNAME
+ value: mongoAdmin
+ - name: MONGO_INITDB_ROOT_PASSWORD
+ value: someRandomPassword123$
+ volumeMounts:
+ - name: mongo-data
+ mountPath: /data/db
+ volumes:
+ - name: mongo-data
+ persistentVolumeClaim:
+ claimName: mongo-pvc
diff --git a/mongodb-service.yml b/mongodb-service.yml
new file mode 100644
index 0000000..00a4a7d
--- /dev/null
+++ b/mongodb-service.yml
@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Service
+metadata:
+ name: mongodb
+spec:
+ ports:
+ - port: 27017
+ targetPort: 27017
+ selector:
+ app: mongodb
diff --git a/nginx.conf b/nginx.conf
deleted file mode 100644
index 737504a..0000000
--- a/nginx.conf
+++ /dev/null
@@ -1,38 +0,0 @@
-events {
- # Set the maximum number of simultaneous connections that can be opened by a worker process
- worker_connections 1024;
-}
-
-http {
- # Define an upstream group for load balancing the todo-app services
- upstream todo-app {
- ip_hash;
- server todo-app-1:3000; # First server in the upstream group
- server todo-app-2:3000; # Second server in the upstream group
- }
-
- # Define a custom log format for capturing upstream request details
- log_format upstreamlog '[$time_local] $remote_addr - $remote_user - $request '
- '"$status" $body_bytes_sent '
- '"$http_referer" "$http_user_agent" '
- '"$gzip_ratio" '
- '${host} $request_uri '
- '$upstream_addr ';
-
- server {
- listen 80; # Listen on port 80 for incoming HTTP requests
- location / {
- # Proxy requests to the upstream todo-app group
- proxy_pass http://todo-app;
- proxy_http_version 1.1; # Use HTTP/1.1 for proxying
- proxy_set_header Upgrade $http_upgrade; # Set the Upgrade header
- proxy_set_header Connection 'upgrade'; # Set the Connection header to upgrade
- proxy_set_header Host $host; # Forward the original Host header
- proxy_cache_bypass $http_upgrade; # Bypass cache for upgraded requests
- # Log access requests using the defined upstream log format
- access_log /var/log/nginx/access.log upstreamlog;
- }
- }
-}
-
-
diff --git a/todo-app-deployment.yml b/todo-app-deployment.yml
new file mode 100644
index 0000000..ef1d8dd
--- /dev/null
+++ b/todo-app-deployment.yml
@@ -0,0 +1,25 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+ name: todo-app
+ labels:
+ app: todo-app
+spec:
+ replicas: 2
+ selector:
+ matchLabels:
+ app: todo-app
+ template:
+ metadata:
+ labels:
+ app: todo-app
+ spec:
+ containers:
+ - name: todo-app
+ image: todo-app:latest
+ imagePullPolicy: IfNotPresent
+ ports:
+ - containerPort: 3000
+ env:
+ - name: MONGO_URI
+ value: mongodb://mongoAdmin:someRandomPassword123$@mongodb:27017/todo-app?authSource=admin
diff --git a/todo-app-service.yml b/todo-app-service.yml
new file mode 100644
index 0000000..1fe97a5
--- /dev/null
+++ b/todo-app-service.yml
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+ name: todo-app
+spec:
+ ports:
+ - port: 3000
+ targetPort: 3000
+ selector:
+ app: todo-app
+ type: NodePort
--
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