10. Kubernetes Essentials 🚀 kubectl, YAML, Deployments Tips
🚀 Want to master Kubernetes basics quickly? In this tutorial, we cover essential Kubernetes concepts like kubectl commands, required YAML fields, Deployments, Services, ConfigMaps, and real-world best practices for smarter DevOps workflows!
✔️ Learn how kubectl talks to the Kubernetes API
🔥 Understand must-know YAML fields for production
🎯 Explore Deployments, Services, and scaling
💡 Follow real-world Kubernetes best practices for security, resource limits, and monitoring!
📂 Commands & YAML Files Used in This Video:
🔹 Essential kubectl Commands:
$ kubectl get pods # List all pods
$ kubectl get svc # List all services
$ kubectl describe pod mypod # Show pod details
$ kubectl apply -f file.yaml # Apply config
$ kubectl get pods -n development
$ kubectl get nodes
$ kubectl get nodes -o wide
💡 YAML EXAMPLES:
✔️example-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: demo-pod
namespace: default
labels:
app: nginx
spec:
containers:
name: nginx-container
image: nginx:latest
ports:
containerPort: 80
✔️example-deployment.yaml
apiVersion: apps/v1
kind: Deployment
spec:
replicas: 3
template:
spec:
containers:
name: app
image: nginx:1.14
✔️example-service.yaml
apiVersion: v1
kind: Service
spec:
type: LoadBalancer
selector:
app: myapp
ports:
port: 80
✔️example-configmap.yaml
apiVersion: v1
kind: ConfigMap
data:
DB_HOST: mysql
API_URL: http://api
MODE: production
Best Practices Examples:
✔️ Security - NetworkPolicy
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
spec:
podSelector: {}
policyTypes:
Ingress
Egress
✔️ Resource Requests and Limits
resources:
limits:
cpu: "500m"
memory: "512Mi"
requests:
cpu: "200m"
✔️ Monitoring - Liveness Probe
livenessProbe:
httpGet:
path: /health
port: 8080
periodSeconds: 30
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📚 Chapters
0:00 - 👋 Intro & Kubectl Basics
1:14 - 🚀 Essential Kubectl Commands
1:59 - 🤔 Understanding kubectl get nodes
3:04 - 💾 Node Data & Output Explained
4:47 - 🤖 Kubelet & Mandatory Fields
6:47 - 📦 Common App Deployment Objects
7:49 - ✨ Kubernetes Best Practices Overview
8:02 - 🏷️ Organization & Security Tips
8:51 - ⚙️ Automation & Testing
9:24 - 🔄 Final Recap & Next Steps
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