update kuber to working

Containerization & Orchestration/Kubernetes/components/1-NameSpace.md

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+# Kubernetes Namespaces Guide
+
+Kubernetes **namespaces** allow you to organize and isolate resources within your cluster.
+
+---
+
+## 🧾 Listing Namespaces
+
+To list all namespaces:
+
+```bash
+kubectl get namespaces
+```
+
+or the shorthand:
+
+```bash
+kubectl get ns
+```
+
+---
+
+## 🛠️ Creating a Namespace
+
+Create a new namespace:
+
+```bash
+kubectl create namespace <namespace-name>
+```
+
+or:
+
+```bash
+kubectl create ns <namespace-name>
+```
+
+---
+
+## 🗑️ Deleting a Namespace
+
+Delete a namespace:
+
+```bash
+kubectl delete ns <namespace-name>
+```
+
+---
+
+## ⚠️ Best Practices & Notes
+
+* **Namespaces are isolated**, but they **can still communicate** with each other by default.
+* It is **not recommended to create namespaces that start with `kube-`**, as those are typically reserved for system components.
+
+---
+
+## 📄 Creating a Namespace with a Manifest
+
+You can define a namespace using a YAML manifest:
+
+```yaml
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: namespace-test
+```
+
+Apply it using:
+
+```bash
+kubectl apply -f namespace.yaml
+```
+

Containerization & Orchestration/Kubernetes/components/2-Pod.md

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+
+## Pod Management
+
+### Listing Pods
+
+- **List Pods in the Default Namespace**
+
+  ```bash
+  kubectl get pods
+  ```
+
+- **List Pods with Detailed Information (Wide Output)**
+
+  ```bash
+  kubectl get pods -o wide
+  ```
+
+- **List Pods in a Specific Namespace**
+
+  ```bash
+  kubectl get pods -o wide -n <namespace-name>
+  ```
+
+### Running a Pod
+
+> **Note:** The `kubectl run` command is best suited for running single pods. For more complex deployments, consider using YAML manifests.
+
+
+```bash
+kubectl run <pod-name> --image=<image-name>
+```
+
+```bash
+kubectl run <pod-name> --image=<image-name> -n <namespace>
+```
+
+
+```bash
+kubectl delete pod <pod-name> -n <namespace-name>
+```
+
+
+```bash
+kubectl delete pod <pod-name> -n <namespace-name> --force
+```
+
+
+```bash
+kubectl delete pod <pod-name> -n <namespace-name> --force --grace-period 0
+```
+
+```bash
+kubectl edit pod -n <namepsace> <podname>
+```
+Pod Can not been edit (not editable)
+
+
+```bash
+kubectl exec -it -n <namespace> <podname> -- <command or shell>
+```
+
+```yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  namespace: dev
+  name: pod-1
+  labels:
+    label1: test
+    label2: test2
+    app.kubernetes.io/label3: test3
+    app.kubernetes.io/label4: test4
+spec:
+  containers:
+    - name: nginx-server
+      image: nginx
+    
+    - name: nginx-exporter
+      image: nginx-exporter
+
+    - name: ubuntu-c0
+      image: ubuntu
+      command: ["/bin/bash","-c","while true; do echo hello-world; sleep 5; done"]
+      resources:
+        limits:
+          memory: "256Mi"
+          cpu: "250m"
+        requests:
+          memory: "128Mi"
+          cpu: "125m"
+  nodeSelector:
+    hostname: k3s
+    app.kubernetes.io/disk: ssd
+```
+