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Containerization-Orchestration/Kubernetes/workloads/02-Pod.md

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+# 🌐 Kubernetes Pod Management Guide
+
+A concise guide for managing Kubernetes Pods using `kubectl` and YAML manifests.
+
+---
+
+## 📋 Listing Pods
+
+### 🔹 Default Namespace
+
+List all Pods in the **default** namespace:
+
+```bash
+kubectl get pods
+```
+
+### 🔹 Wide Output (More Info)
+
+List Pods with extended details (e.g., IP, node, etc.):
+
+```bash
+kubectl get pods -o wide
+```
+
+### 🔹 Specific Namespace
+
+List Pods in a specific namespace:
+
+```bash
+kubectl get pods -o wide -n <namespace-name>
+```
+
+---
+
+## 🚀 Running a Pod
+
+> **Note:** `kubectl run` is ideal for quick tests or running **single** Pods. For production workloads, use **YAML manifests** or **Deployments**.
+
+### 🔹 Run a Pod in Default Namespace
+
+```bash
+kubectl run <pod-name> --image=<image-name>
+```
+
+### 🔹 Run a Pod in a Specific Namespace
+
+```bash
+kubectl run <pod-name> --image=<image-name> -n <namespace>
+```
+
+---
+
+## ❌ Deleting Pods
+
+### 🔹 Standard Delete
+
+```bash
+kubectl delete pod <pod-name> -n <namespace-name>
+```
+
+### 🔹 Force Delete
+
+```bash
+kubectl delete pod <pod-name> -n <namespace-name> --force
+```
+
+### 🔹 Immediate Force Delete (No Grace Period)
+
+```bash
+kubectl delete pod <pod-name> -n <namespace-name> --force --grace-period=0
+```
+
+---
+
+## ✏️ Editing a Pod
+
+> **Warning:** Pods are **not directly editable**. Attempting to edit a running pod will result in a temporary patch but not persistent changes.
+
+```bash
+kubectl edit pod -n <namespace> <pod-name>
+```
+
+---
+
+## 🔧 Executing into a Pod
+
+Use this to start a shell or run commands inside a container:
+
+```bash
+kubectl exec -it -n <namespace> <pod-name> -- <command>
+```
+
+Example for a shell:
+
+```bash
+kubectl exec -it -n dev my-pod -- /bin/bash
+```
+
+---
+
+## 🧾 Example Pod YAML Manifest
+
+A multi-container Pod with resource limits and node selector:
+
+```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
+```
+