Скачать или смотреть 19. Kubernetes ConfigMaps Explained PART-1: Purpose, Examples & Real-Time Deployment Made Easy

In this video, I dive into Kubernetes ConfigMaps, explaining their purpose and how they’re used to manage configuration data separate from application code. I demonstrate how ConfigMaps streamline deployments by allowing you to store key-value pairs, environment variables, and other configuration details that applications can access dynamically.

I provide five practical ConfigMap examples and discuss how they enhance real-time deployments, eliminating the need for manual configurations. Additionally, I cover what deployment setups would look like without ConfigMaps and explain alternatives to ConfigMaps for managing configuration data in Kubernetes.


Here are five practical examples of Kubernetes ConfigMap manifest files to cover various use cases:

1. Basic ConfigMap for Application Properties
apiVersion: v1
kind: ConfigMap
metadata:
name: app-config
data:
APP_MODE: "production"
APP_PORT: "8080"
LOG_LEVEL: "info"

2. ConfigMap with File Contents for Environment Variables

apiVersion: v1
kind: ConfigMap
metadata:
name: env-config
data:
.env: |
DATABASE_URL=postgres://user:pass@db:5432/app
SECRET_KEY=mysecretkey
DEBUG_MODE=false

3. JSON Data in ConfigMap

apiVersion: v1
kind: ConfigMap
metadata:
name: json-config
data:
config.json: |
{
"maxConnections": 100,
"enableCache": true,
"cacheTimeout": 300
}


4. ConfigMap for Nginx Configurations

apiVersion: v1
kind: ConfigMap
metadata:
name: nginx-config
data:
nginx.conf: |
server {
listen 80;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
}


5. Multiple Configuration Files in a Single ConfigMap

5. Multiple Configuration Files in a Single ConfigMap

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