# 🔥 DevOps Journey — Week 14: Docker to Kubernetes (Networking, Compose & Scaling)

When learning DevOps, the jump from Docker to Kubernetes can feel huge.
Here’s how I broke it down into 3 clear steps.

---

Step 1: Docker Networking

Containers need to talk to each other.

• Bridge → default, isolated, custom networks possible.

• Host → shares host’s stack.

• Overlay → cross-host communication (for Swarm).

👉 Question to readers: Which network driver do you use most?

---

Step 2: Docker Compose

Compose makes multi-container apps manageable.
Example: Nginx + MySQL in one config file.

docker-compose up -d
docker-compose down
Simple and clean!

Step 3: Kubernetes (K8s)
Here’s where the magic of scaling & automation happens:

Auto-healing

Auto-scaling

Rolling updates

Load balancing

Example:
bash
Copy code
kubectl create deployment web --image=nginx
kubectl scale deployment web --replicas=5
kubectl get pods
✅ Key Insight:
Docker is great for local dev, Compose is great for small apps, but Kubernetes takes you to production scale.
💬 What was your toughest challenge when moving from Docker to Kubernetes?






#docker #kubernetes #devops #hashnode