update kuber to working

Containerization & Orchestration/Kubernetes/1-Information.md

@@ -79,4 +79,5 @@ The **Control Plane** is the core management component of a Kubernetes cluster.
 - **Worker (none)**  
   These nodes run application workloads and do not participate in control decisions.
 
----
+
+image pull policy in kubernetes:

Containerization & Orchestration/Kubernetes/3-Commands.md

@@ -2,34 +2,6 @@
 
 This guide provides a concise reference for common `kubectl` commands used to manage Kubernetes clusters. Whether you’re managing nodes, namespaces, pods, deployments, or autoscaling, the examples below will help you perform everyday tasks with confidence.
 
----
-
-## Table of Contents
-
-- [Kubernetes Command Reference](#kubernetes-command-reference)
-  - [Table of Contents](#table-of-contents)
-  - [General Commands](#general-commands)
-  - [Node Management](#node-management)
-    - [Listing Nodes](#listing-nodes)
-    - [Labeling Nodes](#labeling-nodes)
-    - [Node Maintenance (Cordon/Drain)](#node-maintenance-cordondrain)
-  - [Namespace Management](#namespace-management)
-  - [Pod Management](#pod-management)
-    - [Listing Pods](#listing-pods)
-    - [Running a Pod](#running-a-pod)
-    - [Deleting a Pod](#deleting-a-pod)
-  - [API Resources \& Documentation](#api-resources--documentation)
-  - [Logs \& Pod Information](#logs--pod-information)
-  - [Applying YAML Files](#applying-yaml-files)
-  - [Viewing Cluster Resources](#viewing-cluster-resources)
-  - [ReplicaSet \& Deployment Management](#replicaset--deployment-management)
-    - [Scaling and Rollouts](#scaling-and-rollouts)
-    - [Autoscaling](#autoscaling)
-  - [Port Forwarding](#port-forwarding)
-  - [Additional Information](#additional-information)
-
----
-
 ## General Commands
 
 - **List API Resources**  
@@ -40,136 +12,6 @@ This guide provides a concise reference for common `kubectl` commands used to ma
   ```
 
 ---
-
-## Node Management
-
-### Listing Nodes
-
-- **Show All Nodes**
-
-  ```bash
-  kubectl get nodes
-  ```
-
-### Labeling Nodes
-
-- **Set a Custom Label on a Node**
-
-  ```bash
-  kubectl label node <node-name> kubernetes.io/<label-key>=<label-value>
-  ```
-
-  > **Note:** Replace `<node-name>`, `<label-key>`, and `<label-value>` with your desired values.
-
-### Node Maintenance (Cordon/Drain)
-
-- **Cordon a Node**  
-  Prevent new pods from being scheduled on the node.
-
-  ```bash
-  kubectl cordon <node-name>
-  ```
-
-- **Uncordon a Node**  
-  Mark the node as schedulable again.
-
-  ```bash
-  kubectl uncordon <node-name>
-  ```
-
-- **Drain a Node**  
-  Evict all pods from the node (excluding those managed by DaemonSets).
-
-  ```bash
-  kubectl drain <node-name> --ignore-daemonsets --delete-local-data
-  ```
-
-  > **Warning:** Draining a node will evict running pods. Ensure that you plan this action to avoid service disruption.
-
----
-
-## Namespace Management
-
-- **List All Namespaces**
-
-  ```bash
-  kubectl get namespaces
-  # Or the shorthand:
-  kubectl get ns
-  ```
-
-- **Create a New Namespace**
-
-  ```bash
-  kubectl create namespace <namespace-name>
-  ```
-
----
-
-## 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.
-
-- **Basic Example:**
-
-  ```bash
-  kubectl run <pod-name> --image=<image-name> --port=<port-number> -n <namespace-name>
-  ```
-
-- **Advanced Example with Multiple Options:**
-
-  ```bash
-  kubectl run mypod --image=nginx --port=80 -n mynamespace \
-    --env="ENV_VAR_NAME=VALUE" --command -- nginx -g "daemon off;" \
-    --restart=Always --dry-run=client \
-    --labels="app=myapp,env=prod" \
-    --limits=cpu=100m,memory=256Mi --requests=cpu=50m,memory=128Mi
-  ```
-
-  **Common Options Explained:**
-
-  - `--image`: Container image to use.
-  - `--port`: Port exposed by the container.
-  - `-n` or `--namespace`: Namespace in which to run the pod.
-  - `--env`: Set environment variables.
-  - `--command`: Treat the following arguments as the command to run.
-  - `--restart`: Pod restart policy (`Always`, `OnFailure`, or `Never`).
-  - `--labels`: Assign labels to the pod.
-  - `--dry-run`: Validate the command without creating the pod.
-  - `--limits` and `--requests`: Define resource limits and requests for the container.
-
-### Deleting a Pod
-
-- **Delete a Pod in a Specific Namespace**
-
-  ```bash
-  kubectl delete pod <pod-name> -n <namespace-name>
-  ```
-
----
-
 ## API Resources & Documentation
 
 - **Get Detailed Documentation for an API Resource**
@@ -184,21 +26,10 @@ This guide provides a concise reference for common `kubectl` commands used to ma
   kubectl explain pod
   ```
 
----
-
-## Logs & Pod Information
-
-- **Stream Logs for a Running Pod**
-
   ```bash
-  kubectl logs -f -n <namespace-name> <pod-name>
+  kubectl explain pod.metadata
   ```
 
-- **Get Detailed Information About a Pod**
-
-  ```bash
-  kubectl describe pod <pod-name> -n <namespace-name>
-  ```
 
 ---
 
@@ -296,3 +127,4 @@ kubectl port-forward -n <namespace-name> svc/<service-name> <local-port>:<target
 - **Static Manifest Files**  
   Any YAML files placed in `/etc/kubernetes/manifests/` are automatically loaded when the kubelet starts (for example, after a server reboot).
 
+

Containerization & Orchestration/Kubernetes/4-BasicSetup.md

@@ -0,0 +1,13 @@
+
+```bash
+kubectl complation <shell>
+```
+
+exapmles:
+```bash
+kubectl completion zsh > "${fpath[1]}/_kubectl"
+```
+```bash
+kubectl completion bash > ~/.kube/completion.bash.inc
+```
+

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

@@ -0,0 +1,72 @@
+# 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

@@ -0,0 +1,95 @@
+
+## 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
+```
+

Containerization & Orchestration/Kubernetes/label.md

@@ -0,0 +1,9 @@
+- **Set a Custom Label on a Node**
+
+  ```bash
+  kubectl label node <node-name> kubernetes.io/<label-key>=<label-value>
+  ```
+
+  > **Note:** Replace `<node-name>`, `<label-key>`, and `<label-value>` with your desired values.
+
+

Containerization & Orchestration/Kubernetes/log-debug.md

@@ -0,0 +1,27 @@
+
+- **Stream Logs for a Running Pod**
+
+  ```bash
+  kubectl logs -f -n <namespace-name> <pod-name>
+  ```
+
+
+
+  ```bash
+  kubectl logs -f -n <namespace-name> <pod-name> -c <container-name>
+  ```
+
+
+
+- **Get Detailed Information About a Pod**
+
+  ```bash
+  kubectl describe pod <pod-name> -n <namespace-name>
+  ```
+
+
+in log swith the pod need to be up 
+
+but in describe dont need to pod be up
+
+describe work on all components

Containerization & Orchestration/Kubernetes/node-manage.md

@@ -0,0 +1,44 @@
+
+## Node Management
+
+### Listing Nodes
+
+- **Show All Nodes**
+
+  ```bash
+  kubectl get nodes
+  ```
+
+
+  ```bash
+    kubectl get nodes --show-lables
+  ```
+
+### Node Maintenance (Cordon/Drain)
+
+- **Cordon a Node**  
+  Prevent new pods from being scheduled on the node.
+
+  ```bash
+  kubectl cordon <node-name>
+  ```
+
+- **Uncordon a Node**  
+  Mark the node as schedulable again.
+
+  ```bash
+  kubectl uncordon <node-name>
+  ```
+
+- **Drain a Node**  
+  Evict all pods from the node (excluding those managed by DaemonSets).
+
+  ```bash
+  kubectl drain <node-name> --ignore-daemonsets --delete-local-data
+  ```
+
+  > **Warning:** Draining a node will evict running pods. Ensure that you plan this action to avoid service disruption.
+
+
+---
+

README.md

@@ -12,7 +12,7 @@ A curated collection of scripts, configuration files, and guides for managing an
 
 ### 🐳 Containerization & Orchestration
 - [Docker](./Containerization%20&%20Orchestration/Docker)
-- [Kubernetes](./Containerization%20&%20Orchestration/Kubernetes)
+- [Kubernetes(On Working)](./Containerization%20&%20Orchestration/Kubernetes)
 
 ### 🗄️ Databases
 - [Postgresql](./Databases/Postgresql)