devops-school

Linux + MySQL/MariaDB: “Who’s eating CPU/RAM?” — Handy Commands

Below is a compact, copy-pasteable cheat-sheet to find which process, user, or application is consuming the most CPU and memory, plus MySQL/MariaDB commands to pinpoint hot databases and queries.

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🧠 Quick System Snapshots

# Top CPU processes (non-interactive)

devops-school

#!/bin/bash

# === Variables ===
DB_NAME="artifactory"
DB_USER="artifactory"
DB_PASS="StrongPassword123!"
ARTIFACTORY_VERSION="7.117.7"

echo "=== JFrog Artifactory $ARTIFACTORY_VERSION Installation Started ==="

devops-school

AWS Load Balancer Controller for Kubernetes: A Comprehensive Guide

Table of Contents

1. Introduction
   • What is the AWS Load Balancer Controller?
   • How It Works
   • Key Concepts
2. Prerequisites
   • Kubernetes Cluster Requirements

• AWS IAM Permissions

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The AWS Load Balancer Controller is a critical component for running Kubernetes workloads on AWS, enabling seamless integration with AWS Elastic Load Balancers (ELB). This comprehensive tutorial will guide you from fundamental concepts to advanced configurations, ensuring you can effectively manage external traffic to your Kubernetes applications.

Table of Contents

1. Introduction to AWS Load Balancer Controller
   • What is it?
   • How it works
   • Key Concepts (Ingress, Service, ALB, NLB, Target Groups, Annotations)
2. Prerequisites
3. Installation

devops-school

stages:
  - plan
  - approval
  - deploy

variables:
  SERVICENOW_INSTANCE: "https://your-instance.service-now.com"
  CHANGE_REQUEST_ID_FILE: "change_request_id.txt"

# Step 1: Create a Change Request in ServiceNow

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# =============================
# 🎯 Pipeline Execution Policy YAML
# Enforces: SAST, Secret Detection, Custom Job
# =============================
type: pipeline
name: enforce-secure-pipeline
enabled: true
rules:
  - type: pipeline
    branches:

devops-school

🧪 GitLab Code Section – Student Lab Manual (v18.0)

Welcome to the GitLab Lab Manual for the Code section. This hands-on guide will walk you through using essential version control and collaboration tools available under a GitLab project’s Code tab.

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🎯 Objective

By the end of this lab, you will be able to:

devops-school

🛠️ DevOpsSchool Markdown Reference

Welcome to DevOpsSchool – your one-stop platform for mastering DevOps and Cloud skills. Below is a demonstration of Markdown language features while introducing our top certifications and frameworks.

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📚 DevOps Certifications Offered

Here is a categorized list of certifications you can pursue at DevOpsSchool:

devops-school

stages:
  - microservice_build

build_service_a:
  stage: microservice_build
  script:
    - echo "Building microservice A..."

build_service_b:
  stage: microservice_build

devops-school

localhost:
  nodename: local-1
  hostname: localhost
  osVersion: 26~22.04.1-Ubuntu
  osFamily: Linux
  osArch: amd64
  description: Rundeck server node
  osName: Linux
  username: ubuntu
  tags: ''