Kubernetes Pods, Deployments & Services Explained

The Pod as the atomic unit, Deployments for replica management and rollouts, and Services (ClusterIP/NodePort/LoadBalancer) for stable networking.

Terraform State Management & Remote Backends

Why state exists, the danger of local state on a team, S3 + DynamoDB remote backends with state locking, and recovering from state drift.

How ATS Resume Screening Actually Works

What an Applicant Tracking System parses, why tables/columns/images break parsing, keyword matching mechanics, and how to format around it.

DevOps Resume: Structure, Keywords & Examples

Section order for a DevOps/SRE resume, which tools and metrics recruiters scan for first, and a before/after bullet-point rewrite.

Wazuh: SIEM Architecture, Agents & Detection Rules

Wazuh manager/indexer/dashboard architecture, agent deployment, custom detection rules, alert tuning, and the operational dashboard workflow.

OWASP Top 10: Vulnerabilities, Exploits & Fixes

SQL injection, XSS, CSRF, RCE, and the rest of the OWASP Top 10 — with vulnerable/fixed code examples and the security headers that stop them.

Bitbucket: Repositories, Pipelines & Deployments

Repository setup, Bitbucket Pipelines YAML, branching permissions, pull requests, and deployment stages to servers and cloud targets.

Nagios Monitoring: NRPE, Checks & Alerting

Nagios Core installation, NRPE agent setup, host and service checks, notification/escalation rules, and the commands you'll run daily.

Ansible Automation: Inventory, Playbooks & Roles

Inventory files, playbooks, variables, roles, handlers, Ansible Vault, and real-world playbooks for hardening and deploying servers at scale.

Jenkins CI/CD: Pipelines, Agents & Deployments

Installation, declarative pipelines, agents, credentials, GitHub/Bitbucket webhooks, deployment stages, and pipeline troubleshooting.