Create README.md

Author: DevOpsWithDheeraj

16_Hands-on_Projects/README.md

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+## 🚀 **16. Hands-on Projects (Python for DevOps)**
+
+These projects combine all the concepts learned throughout the course — from Python fundamentals to DevOps-specific automation.
+Each project focuses on **real-world DevOps automation**, helping you practice working with AWS, Docker, Kubernetes, monitoring, and CI/CD systems.
+
+---
+
+### ✅ **1. Automate AWS EC2 Instance Start/Stop using boto3**
+
+**Goal:**
+Automatically start or stop EC2 instances based on time or load conditions.
+
+**Skills Covered:**
+AWS automation, boto3, IAM permissions, scheduling.
+
+**Example Code:**
+
+```python
+import boto3
+
+ec2 = boto3.client('ec2')
+
+def start_instances():
+    ec2.start_instances(InstanceIds=['i-0abcd1234ef567890'])
+    print("✅ EC2 instance started")
+
+def stop_instances():
+    ec2.stop_instances(InstanceIds=['i-0abcd1234ef567890'])
+    print("🛑 EC2 instance stopped")
+
+# Call the function manually or via cron/scheduler
+start_instances()
+```
+
+---
+
+### ✅ **2. Log File Analyzer Script**
+
+**Goal:**
+Parse and analyze log files (e.g., `/var/log/syslog`, Nginx logs) to extract errors, warnings, and statistics.
+
+**Skills Covered:**
+File handling, regex (`re`), automation, reporting.
+
+**Example Code:**
+
+```python
+import re
+
+error_count = 0
+with open("/var/log/syslog", "r") as log:
+    for line in log:
+        if re.search(r"error|failed|critical", line, re.IGNORECASE):
+            error_count += 1
+
+print(f"⚠️ Total errors found: {error_count}")
+```
+
+---
+
+### ✅ **3. Automated Backup using Python**
+
+**Goal:**
+Backup important files or directories to a remote server or S3 bucket automatically.
+
+**Skills Covered:**
+File handling, `shutil`, `boto3`, `paramiko`.
+
+**Example Code:**
+
+```python
+import shutil, datetime, boto3
+
+# Create local backup
+backup_file = f"/tmp/backup_{datetime.date.today()}.zip"
+shutil.make_archive("/tmp/backup", "zip", "/etc")
+
+# Upload to S3
+s3 = boto3.client('s3')
+s3.upload_file(backup_file, "devops-backup-bucket", "backup.zip")
+print("✅ Backup completed and uploaded to S3.")
+```
+
+---
+
+### ✅ **4. CI/CD Pipeline Trigger via Python Script**
+
+**Goal:**
+Trigger Jenkins or GitLab CI/CD pipelines programmatically using REST APIs.
+
+**Skills Covered:**
+REST API, `requests`, authentication, DevOps integration.
+
+**Example Code (Jenkins Example):**
+
+```python
+import requests
+
+jenkins_url = "http://jenkins-server:8080/job/deploy/build"
+response = requests.post(jenkins_url, auth=('admin', 'password'))
+print("✅ CI/CD Pipeline Triggered:", response.status_code)
+```
+
+---
+
+### ✅ **5. Docker Image Cleaner Automation**
+
+**Goal:**
+Automatically delete old or unused Docker images to save disk space.
+
+**Skills Covered:**
+Docker SDK, automation, system monitoring.
+
+**Example Code:**
+
+```python
+import docker
+
+client = docker.from_env()
+for image in client.images.list():
+    if "<none>" in image.tags:
+        client.images.remove(image.id, force=True)
+        print(f"🧹 Removed dangling image: {image.id}")
+```
+
+---
+
+### ✅ **6. Kubernetes Pod Status Checker**
+
+**Goal:**
+Monitor the status of pods in a Kubernetes cluster and report failed pods.
+
+**Skills Covered:**
+Kubernetes Python client, automation, alerting.
+
+**Example Code:**
+
+```python
+from kubernetes import client, config
+
+config.load_kube_config()
+v1 = client.CoreV1Api()
+pods = v1.list_pod_for_all_namespaces()
+
+for pod in pods.items:
+    if pod.status.phase != "Running":
+        print(f"⚠️ Pod {pod.metadata.name} in {pod.metadata.namespace} is {pod.status.phase}")
+```
+
+---
+
+### ✅ **7. Server Health Monitoring Tool**
+
+**Goal:**
+Monitor CPU, memory, and disk usage, and trigger alerts if thresholds are crossed.
+
+**Skills Covered:**
+`psutil`, alerting, system monitoring, automation.
+
+**Example Code:**
+
+```python
+import psutil, smtplib
+
+cpu = psutil.cpu_percent()
+memory = psutil.virtual_memory().percent
+
+if cpu > 80 or memory > 80:
+    print("⚠️ High usage detected!")
+else:
+    print(f"✅ CPU: {cpu}% | Memory: {memory}%")
+```
+
+---
+
+## 🧠 **Learning Outcomes**
+
+By completing these projects, you’ll gain hands-on experience in:
+
+* Automating cloud (AWS) operations
+* Managing infrastructure with Docker & Kubernetes
+* Integrating Python with DevOps CI/CD pipelines
+* Building monitoring and backup scripts
+* Applying automation in real-world DevOps workflows
+
+---