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Er. Bhupendra
Er. Bhupendra

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K8s YAML file Kind features

#tutorial #beginners #kubernetes #devops

🧠 Short Answer

👉 kind batata hai ki tum Kubernetes me kis type ka object bana rahe ho

kind: Pod
kind: Deployment
kind: Service
kind: ConfigMap
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👉 Har kind = alag resource / object type

🔥 Simple analogy 

Kubernetes = City 🏙️
kind = building type 🏢
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  • Pod = ghar 🏠
  • Service = road 🚗
  • Deployment = manager 🧑‍💼
  • ConfigMap = settings file ⚙️

👉 Tum YAML me decide karte ho → kaunsa “building” banana hai

🚀 Most Important kind (interview + real use)

1️⃣ Pod (basic unit) 

kind: Pod
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👉 Sabse chhota unit
👉 Container yahi run hota hai

❌ Direct use kam hota hai (production me)

2️⃣ Deployment (most used 🔥) 

kind: Deployment
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👉 Ye Pods ko manage karta hai:

  • scaling
  • auto-restart
  • rolling update

✔ Real-world me mostly Deployment hi use hota hai

3️⃣ ReplicaSet 

kind: ReplicaSet
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👉 Ye ensure karta hai:

"Itne number of pods hamesha chalne chahiye"

⚠️ Direct use rare hai
👉 Deployment internally ReplicaSet use karta hai

4️⃣ Service 

kind: Service
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👉 Pods ko expose karta hai

  • stable IP
  • load balancing

5️⃣ ConfigMap 

kind: ConfigMap
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👉 Configuration store karne ke liye

Example:

  • DB URL
  • API keys (non-secret)

6️⃣ Secret 

kind: Secret
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👉 Sensitive data:

  • password
  • tokens

7️⃣ Namespace 

kind: Namespace
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👉 Resources ko group karta hai (dev/prod)

8️⃣ Ingress 

kind: Ingress
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👉 HTTP routing (NGINX ke saath)

🔥 Ye sab kyu alag-alag kind hai?

👉 Kubernetes ek modular system hai

Har cheez ka alag responsibility:

Problem Kind
container run Pod
scaling/manage Deployment
networking Service
config ConfigMap
secret Secret

👉 Isliye multiple kinds hain

📊 Kitne kinds hote hain?

👉 Bohot zyada 😄 (50+)

Common categories:

🔹 Workload

  • Pod
  • Deployment
  • ReplicaSet
  • StatefulSet
  • DaemonSet
  • Job / CronJob

🔹 Networking

  • Service
  • Ingress

🔹 Config

  • ConfigMap
  • Secret

🔹 Cluster

  • Namespace
  • Node

🔍 Kaise dekhe saare kinds? 

kubectl api-resources
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👉 Ye command:
✔ Saare available kinds dikha dega

🔥 Example full YAML 

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
spec:
  replicas: 2
  template:
    spec:
      containers:
        - name: nginx
          image: nginx
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👉 Yaha:

  • kind: Deployment → define karta hai object type
  • Kubernetes samajh jata hai kya create karna hai

🎯 Important clarity

👉 kind change karoge → pura behavior change ho jayega

Example:

kind: Pod         ❌ no scaling
kind: Deployment  ✅ scaling + auto-healing
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🚀 Interview one-liner

👉
"kind in Kubernetes YAML defines the type of resource being created, such as Pod, Deployment, Service, or ConfigMap, each serving a specific role in the cluster."

🧠 Ek line me yaad rakh

👉 kind = Kubernetes object ka type

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