update kuber to working

2025-06-24 20:47:06 +03:30
parent a028612669
commit b0cf699d74
10 changed files with 265 additions and 172 deletions
--- a/Orchestration/Kubernetes/3-Commands.md
+++ b/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).

+