DevOps

Ubuntu 26.04 LTS replaces the 44-year-old C sudo with sudo-rs, a Rust rewrite. Learn what changes, why it matters for security, and what else ships.

The quality-cost tradeoff in DevOps is real but misunderstood. Learn why cutting quality to reduce cost usually increases total cost, and how to find.

Quality and safety are not the same thing in software engineering. Learn when to prioritize safety over quality, how to build guardrails without slowing.

High throughput and high quality are not mutually exclusive in DevOps. Learn how to increase deployment frequency without sacrificing reliability.

Platform engineering and DevOps solve different problems. Learn how platform teams build internal developer platforms, where DevOps still applies.

Golden paths give developers a paved road through infrastructure complexity. Learn how to design golden paths for your internal developer platform.

Spotify Backstage is the most popular open-source developer portal. Learn how to set it up, create software templates, build a service catalog, and integrate.

OpenTofu forked Terraform after the BSL license change. Compare features, compatibility, licensing, and ecosystem to decide which IaC tool fits your team.

Podman and Docker both run containers but differ in architecture. Compare rootless containers, daemon requirements, Compose support, and Kubernetes.

Build an internal developer platform that developers actually use. Learn the five layers of an IDP, common mistakes, build vs buy decisions.

Kubernetes clusters are often 60-70% over-provisioned. Learn practical cost optimization strategies: right-sizing, spot instances, autoscaling, namespace.

Ansible and Terraform solve different infrastructure problems. Learn when to use each, when to use both together, and how they complement each other.

Most DevOps dashboards track the wrong things. Learn which metrics actually predict engineering performance: DORA metrics, SLOs, and the metrics that drive.

Crossplane lets you manage cloud infrastructure using Kubernetes custom resources. Learn how it works, how it compares to Terraform, and when to choose.

Manage persistent data in Docker with named volumes and bind mounts. Backup strategies, restore procedures, and container data sharing.

Expose Kubernetes workloads with ClusterIP, NodePort, LoadBalancer services and Ingress controllers. Practical examples.

Master Ansible inventory in INI and YAML formats. Learn host groups, variables, dynamic inventory plugins for AWS and Azure, and patterns for scaling.

Cilium replaces kube-proxy and sidecar service meshes with eBPF. Learn how Cilium handles networking, observability, and security in Kubernetes.

Automate Terraform with GitHub Actions. Plan on PR, apply on merge, remote state locking, and secure secrets for IaC pipelines.

Essential kubectl commands for pods, deployments, services, logs, and debugging Kubernetes clusters. Copy-paste ready DevOps reference.

Nix creates reproducible development environments that work the same on every machine. Learn how to use Nix for DevOps: dev shells, Docker images, CI.

Use Terraform workspaces for dev, staging, and production. Practical patterns, trade-offs, and best practices for multi-env IaC.

Talos Linux is a minimal, immutable OS designed exclusively for running Kubernetes. Learn why it exists, how it works, and when to use it instead of Ubuntu.

Automate Docker installation on Ubuntu and RHEL with an Ansible playbook. Includes Compose plugin and post-install steps.

Debug Kubernetes pods systematically. Fix CrashLoopBackOff, ImagePullBackOff, pending pods, and OOMKilled with diagnostic commands.

Start learning Ansible for free with hands-on examples. Master playbooks, inventory, modules, and roles to automate infrastructure.

WebAssembly (Wasm) runs serverless functions on Kubernetes with sub-millisecond cold starts. Learn how Fermyon Spin and SpinKube bring Wasm workloads to your.

FinOps is not just for finance teams. Learn how engineers can reduce cloud costs with resource tagging, right-sizing, committed use discounts, and automated.

Hands-on Terraform AWS exercises from beginner to advanced. Practice EC2, S3, VPC, RDS provisioning with real infrastructure.

Learn Ansible Vault to encrypt passwords, API keys, and variables. Covers vault create, edit, encrypt_string, and CI/CD usage.

Dagger lets you write CI/CD pipelines in real programming languages instead of YAML. Learn how Dagger works, how it compares to GitHub Actions.

Complete Docker tutorial for beginners. Learn containers, images, Dockerfiles, volumes, networking, and Docker Compose step by step.

Use Ansible as your Infrastructure as Code tool. Learn how playbooks define, version, and automate your entire infrastructure.

OpenTelemetry is the standard for observability instrumentation. Learn how to add traces, metrics, and logs to your applications with OTel SDKs.

Practice Ansible with hands-on exercises. From basic playbooks to roles and Vault, build real automation skills step by step.

Terraform CDK lets you write infrastructure in TypeScript, Python, or Go instead of HCL. Compare CDKTF and HCL for real-world use cases and learn when each.

Karpenter provisions the right Kubernetes nodes in seconds, not minutes. Learn how it replaces Cluster Autoscaler with faster, smarter node provisioning.

Combine Terraform, Ansible, and Kubernetes for complete DevOps infrastructure. Provision, configure, and deploy end to end.

Falco detects runtime threats in Kubernetes using eBPF. Learn how to set up Falco for container security monitoring, write custom rules, and integrate.

Level up Terraform skills with expert patterns. Dynamic blocks, for_each, moved blocks, validation, and production workflows.

Red Hat Ansible Automation Platform explained. Compare AAP vs open-source Ansible, learn Controller, Hub, and EE architecture.

Pulumi lets you write infrastructure in TypeScript, Python, Go, or C# with full programming language features. Learn how Pulumi works, how it compares.

Flux is a GitOps tool that continuously reconciles your Kubernetes cluster with a Git repository. Learn how to set up Flux, manage Helm releases, and handle.

What a Terraform course teaches you. Skills, exercises, AWS provisioning, and career benefits of learning Terraform for IaC.

Master Docker Compose for local development. Multi-service stacks with databases, caching, and hot reload in one command.

Tekton runs CI/CD pipelines as Kubernetes custom resources. Learn how Tekton works, how to build pipelines with Tasks and Pipelines, and when to choose it.

Apply Root Cause Analysis to DevOps incidents. The 5 Whys, fishbone diagrams, blameless postmortems, and automated RCA tooling.

Sigstore provides keyless signing for container images and software artifacts. Learn how to sign images with Cosign, verify signatures in Kubernetes.

KEDA scales Kubernetes workloads based on external events like queue depth, HTTP requests, or cron schedules. Learn how to set up KEDA scalers and scale.

Learn how successful DevOps teams use value stream mapping to cut lead time. Real-world outcomes, bottleneck fixes, and automation strategies.

Istio adds mTLS, traffic management, and observability to your Kubernetes services without code changes. Learn the core concepts, installation, and practical.

Velero backs up and restores Kubernetes resources and persistent volumes. Learn how to set up Velero, schedule backups, and recover from cluster disasters.

Argo Workflows runs complex DAG-based workflows on Kubernetes. Learn how to build multi-step pipelines for data processing, ML training, CI/CD.

Quick reference for essential SELinux commands on RHEL 9/10. Modes, contexts, labels, booleans, logs, and troubleshooting in one page.

Properly label writable upload directories for Apache with SELinux. Use httpd_sys_rw_content_t to allow writes without disabling security.

Trivy scans container images, filesystems, and IaC for vulnerabilities and misconfigurations. Learn how to integrate Trivy into your CI/CD pipeline.

Configure Apache with PHP-FPM over TCP on RHEL with SELinux enforcing. Diagnose and fix name_connect denials using the correct SELinux boolean and audit tools.

Terragrunt eliminates copy-paste in multi-environment Terraform setups. Learn how to use Terragrunt for DRY configuration, remote state management.

Cloud Native Buildpacks automatically detect and build your app without a Dockerfile. Compare Buildpacks and Dockerfiles for build speed, security.

Use sesearch to query SELinux policy rules. Learn to inspect what httpd_t is allowed to do and verify policy before making changes.

Run effective blameless postmortems with our ready-to-use template. Learn the structured process and turn production incidents into lasting system improvements.

Step-by-step guide to fix SELinux 403 Forbidden errors when using a custom Apache DocumentRoot like /srv/webroot on RHEL.

OPA Gatekeeper enforces custom policies in Kubernetes at admission time. Learn how to write ConstraintTemplates, enforce security standards, and prevent.

SELinux booleans let you toggle common service behaviors without writing custom policy. Learn getsebool, setsebool, and the most useful httpd booleans.

Build a complete CI/CD pipeline from scratch with GitHub Actions. Lint, test, build, and deploy your application — fully automated on every push to your.

Sealed Secrets encrypts Kubernetes secrets so you can store them safely in Git. Learn how to install Sealed Secrets, encrypt secrets, and manage key rotation.

Learn to read SELinux AVC denial logs, use ausearch and sealert, and follow a systematic troubleshooting workflow for RHEL systems.

Kaniko builds container images inside Kubernetes without Docker daemon or root access. Learn how to use Kaniko in CI/CD pipelines, Tekton, and GitHub Actions.

apt, dnf, pacman, zypper, apk — every major Linux package manager explained with examples. Know which one your distro uses and why.

Get started with Prometheus monitoring. Metrics collection, PromQL queries, Grafana dashboards, and alert configuration step by step.

Master SELinux file labeling with semanage fcontext and restorecon. The persistent labeling workflow every sysadmin needs to know.

The definitive guide to choosing a Linux distribution in 2026. Ranked by use case: beginner, developer, server, gaming, privacy, and old hardware.

Alpine Linux produces the smallest Docker images. Learn why it's the go-to base for containers and when to use it vs Debian-slim.

Grafana Loki indexes log metadata instead of full text, making it cost-effective for Kubernetes log aggregation. Learn how to deploy Loki, query with LogQL.

Kali Linux, Parrot OS, and Tails — security-focused Linux distributions for penetration testing, privacy, and digital forensics explained.

Understand the difference between Discretionary and Mandatory Access Control. Learn why MAC stops attacks that DAC cannot prevent.

Compare Ansible, Terraform, and Puppet for infrastructure automation. Understand when to use each tool and how they complement each other in modern DevOps.

KDE Plasma 6 is the most customizable Linux desktop available. What's new, which distros ship it best, and why power users love it.

Ubuntu and Fedora are the two most popular Linux desktop distros. A practical comparison to help you decide which fits your workflow.

SELinux enforces mandatory access control on Linux. Learn what it is, why 87% of enterprises need it, and how it stops real attacks like Log4Shell.

Kubebuilder scaffolds Kubernetes operators in Go. Learn how to create custom controllers, define CRDs, and build operators that automate complex application.

Revive old laptops and desktops with lightweight Linux distributions. Lubuntu, antiX, Puppy Linux, and more — tested on low-spec hardware.

Linux gaming has never been better. Proton, Steam Deck, and native ports make Linux a viable gaming platform. Here's the current state.

Podman vs Docker in 2026: rootless containers, daemonless architecture, native pod support, and when to choose each runtime.

Fedora Atomic desktops (Silverblue, Kinoite) bring immutable OS images and container-based workflows. The future of Linux desktops explained.

Comparing Manjaro and EndeavourOS — two popular Arch-based distros that make Arch Linux accessible. Which one is right for you?

Atlantis automates Terraform plan and apply through pull request comments. Learn how to set up Atlantis for team-based infrastructure changes with automated.

Master YAML syntax for DevOps tools. Scalars, lists, maps, anchors, multi-line strings, and common gotchas with pipeline examples.

Linkerd is the lightest Kubernetes service mesh with automatic mTLS, golden metrics, and zero-config retries. Learn how Linkerd compares to Istio and when its.

NixOS uses declarative configuration and the Nix package manager to create fully reproducible systems. Learn what makes it unique and who it's for.

A practical comparison of Rocky Linux and AlmaLinux — the two leading RHEL-compatible distributions. Which CentOS successor should you choose?

Set up SSH keys and harden your server. Key generation, agent forwarding, config file management, and security tips for remote access.

Comparing the top Linux distributions for server deployments in 2026: Debian, Ubuntu Server, RHEL, Rocky Linux, and Alpine. Which one fits your needs?

Earthly combines Dockerfiles and Makefiles into reproducible, containerized builds. Learn how Earthly works, how to write Earthfiles, and when it replaces.

System76's Pop!_OS with the new COSMIC desktop built in Rust delivers a polished tiling workflow. What's new and is it ready for daily use?

Arch Linux gives you complete control over every package and configuration. Learn what makes Arch unique and whether it's right for you in 2026.

KubeVirt runs virtual machines alongside containers on Kubernetes. Learn how to deploy VMs as pods, migrate legacy workloads, and manage hybrid container-VM.

Compare Nginx, Caddy, and Traefik as reverse proxies. Auto-HTTPS, config complexity, performance, and container integration.

openSUSE Tumbleweed combines rolling-release freshness with automated testing. The safest way to run bleeding-edge Linux in 2026.

Cert-manager automates TLS certificate management in Kubernetes with Let's Encrypt. Learn how to install cert-manager, configure issuers, and secure your.

Debian 13 Trixie brings stability and reliability that enterprise servers demand. Learn why Debian remains the foundation of the Linux ecosystem.

Get started with Helm charts for Kubernetes. Install community charts, create custom charts, manage values files, and handle releases.

Ubuntu 24.04 LTS offers five years of support, the largest ecosystem, and unmatched hardware compatibility. Why it remains the safest mainstream Linux choice.

Secure containers in production. Image scanning, rootless, read-only filesystems, secrets management, and runtime security.

Fedora 43 delivers cutting-edge packages with GNOME 48, Wayland by default, and a polished developer experience for desktop Linux.

Why Linux Mint 22 Zena is the top Linux distribution for newcomers in 2026. Easy setup, familiar desktop, and long-term support until 2029.

Run production PostgreSQL on Kubernetes with CloudNativePG or Zalando Postgres Operator. Learn automated failover, backup, and high availability for stateful.

Testkube runs tests natively on Kubernetes using any testing framework. Learn how to run integration tests, load tests, and API tests inside your cluster.

Snyk finds and fixes vulnerabilities in code, dependencies, containers, and infrastructure as code. Learn how to integrate Snyk into your development workflow.

Write systemd service files. Unit configuration, restart policies, dependency ordering, timer units, and debugging Linux services.

Argo Rollouts adds canary releases and blue-green deployments to Kubernetes with automated analysis and rollback. Learn how to set up progressive delivery.

PostgreSQL for DevOps teams. Backup and restore, streaming replication, performance monitoring, PgBouncer, and Ansible automation.

Understand AWS IAM roles, policies, and best practices for secure cloud access. Least privilege principles, role assumption, and Terraform IAM automation.

Skupper connects Kubernetes services across clusters without VPNs or special networking. Learn how to set up multi-cluster communication with Skupper.

Backstage's software catalog gives you a single inventory of all services, APIs, and infrastructure. Learn how to register components, define system models.

Build a complete monitoring stack. Prometheus for metrics, Grafana for dashboards, Loki for logs, and Alertmanager for alerting.

Grafana Tempo stores distributed traces at scale with object storage. Learn how Tempo compares to Jaeger, how to deploy it on Kubernetes, and how to correlate.

Use Makefiles as your DevOps command runner. Targets for Docker builds, Terraform plans, test suites, and developer onboarding.

Wolfi is a Linux undistro designed for containers with zero CVEs. Learn how Wolfi and Chainguard Images reduce your container attack surface compared.

Kubernetes RBAC from scratch. Roles, ClusterRoles, RoleBindings, ServiceAccounts, and practical examples for access control.

Thanos extends Prometheus with unlimited retention, global querying across clusters, and downsampling. Learn how to deploy Thanos Sidecar and Store Gateway.

Harbor is an open-source container registry with vulnerability scanning, RBAC, image signing, and replication. Learn how to deploy Harbor on Kubernetes.

Configure Kubernetes HPA autoscaling. CPU and memory scaling, custom metrics, and practical YAML examples for production workloads.

Headlamp is a modern Kubernetes dashboard that replaces the official Kubernetes Dashboard. Learn how to install Headlamp, manage clusters, and extend it.

Master Terraform state management. Remote backends, state locking, import commands, state moves, and disaster recovery procedures.

Reduce Docker image size by up to 90%. Multi-stage builds, layer caching, distroless base images, and build-time best practices.

Kyverno validates, mutates, and generates Kubernetes resources using YAML policies instead of Rego. Learn how to enforce security standards, set defaults.

Everything you need to know to start using Terraform for Infrastructure as Code. From installation to your first deployment on AWS.

Master Jinja2 templates in Ansible for dynamic configuration. Variables, filters, loops, conditionals, and real-world config file generation examples.

Learn Docker fundamentals from scratch — containers, images, Dockerfiles, and real-world workflows. No prior experience needed.

Understand Infrastructure as Code (IaC) — what it is, why it matters, and how tools like Terraform are transforming cloud infrastructure management.

Tailscale creates a WireGuard mesh network for zero trust access to servers, Kubernetes clusters, and databases. Learn how Tailscale replaces VPNs.

A beginner-friendly introduction to Ansible — what it is, how it works, and how to write your first playbook to automate server configuration.

Integrate security into CI/CD. SAST, dependency scanning, container scanning, secrets detection, and compliance as code.

Packer automates machine image creation for AWS AMIs, Azure images, Docker, and Vagrant. Learn how to build immutable infrastructure images with Packer.

Master HashiCorp Configuration Language (HCL) — the syntax behind every Terraform configuration. Blocks, arguments, expressions, and functions.

Kubescape scans Kubernetes clusters against NSA, MITRE, and CIS benchmarks. Learn how to audit cluster security, fix misconfigurations, and integrate.

Write reusable Terraform modules. Structure, variables, outputs, semantic versioning, automated testing, and registry publishing.

Understand Terraform state — how it tracks resources, why it's critical, and best practices for remote state, locking, and team workflows.

Master Ansible inventory management with static and dynamic inventories, host groups, variables, patterns, and seamless cloud provider integration.

Kubecost shows real-time cost allocation per namespace, deployment, and label in Kubernetes. Learn how to install Kubecost, identify waste, and set budgets.

Learn how to create and use Terraform modules to organize, share, and reuse infrastructure code across projects and teams.

External Secrets Operator syncs secrets from AWS Secrets Manager, HashiCorp Vault, and Azure Key Vault into Kubernetes Secrets. Learn how to stop committing.

Manage Kubernetes configuration with ConfigMaps and Secrets. Environment variables, volume mounts, external operators, and rotation.

Step-by-step guide to provisioning real AWS resources with Terraform — VPCs, EC2 instances, security groups, and S3 buckets.

MinIO provides S3-compatible object storage you can self-host anywhere. Learn how to deploy MinIO on Kubernetes for backups, artifacts, ML datasets.

Implement SRE golden signals. Latency, traffic, errors, and saturation dashboards with Prometheus queries and Grafana visualizations.

Secure your Terraform workflows — manage secrets, control access, encrypt state, and implement policy-as-code for safe infrastructure deployments.

Cosign signs and verifies container images using keyless signing with Sigstore. Learn how to sign images in CI/CD, verify signatures before deployment.

Kubernetes multi-tenancy with namespaces. Resource quotas, limit ranges, network policies, and RBAC for isolating teams.

Compare the top Infrastructure as Code tools — Terraform, AWS CloudFormation, and Pulumi. Understand their strengths, weaknesses, and ideal use cases.

Build effective Grafana dashboards for monitoring. Layout patterns, template variables, alert integration, and dashboard-as-code.

Telepresence connects your local machine to a remote Kubernetes cluster for fast development. Learn how to intercept traffic, debug services locally, and skip.

Build CI/CD pipelines for Terraform using GitHub Actions. Automate plan, apply, and destroy workflows with safety checks.

Master Linux cron jobs for scheduling. Crontab syntax, common patterns, error handling, output logging, and systemd timer alternatives.

Spacelift orchestrates Terraform, OpenTofu, and Pulumi with policies, drift detection, and approval workflows. Learn how Spacelift compares to Terraform Cloud.

Master Terraform lifecycle rules — prevent_destroy, create_before_destroy, ignore_changes, and replace_triggered_by for safe infrastructure updates.

Checkov scans Terraform, CloudFormation, Kubernetes, and Dockerfile for security misconfigurations with 1000+ built-in policies. Learn how to integrate.

Keycloak provides SSO, OIDC, and SAML authentication for applications and APIs. Learn how to deploy Keycloak on Kubernetes, configure realms, and integrate.

Manage secrets with HashiCorp Vault. KV engine, dynamic credentials, auth methods, policies, and Kubernetes integration patterns.

Argo Events triggers Kubernetes workflows from webhooks, message queues, S3 uploads, and cron schedules. Learn how to build event-driven automation pipelines.

Advanced GitHub Actions for CI/CD. Matrix builds, reusable workflows, dependency caching, artifacts, environments, and self-hosted runners.

Structure Ansible automation with roles for reusability. Directory layout, defaults, handlers, Galaxy integration, and testing with Molecule.

Traefik is a cloud-native reverse proxy and ingress controller for Kubernetes. Learn how to configure routing, TLS termination, middlewares, and canary.

Grafana Alloy is a programmable OpenTelemetry collector that replaces Prometheus Agent, Grafana Agent, and OTel Collector. Learn how to collect metrics, logs.

Configure Kubernetes Ingress for HTTP routing. Nginx controller setup, TLS termination, path-based routing, and rate limiting.

Essential Bash scripting skills for DevOps engineers. Variables, conditionals, loops, functions, error handling, and practical automation scripts for daily.

SOPS encrypts secret values in YAML, JSON, and dotenv files while keeping keys readable. Learn how to use SOPS with age, AWS KMS, or GCP KMS.

Devtron provides a complete CI/CD platform for Kubernetes with a web UI, Helm chart management, and GitOps. Learn how Devtron simplifies application.

Kubernetes troubleshooting checklist. Pod failures, CrashLoopBackOff, networking issues, DNS resolution, and storage fixes.

Benthos (now Redpanda Connect) is a declarative stream processor for ETL, data transformation, and message routing. Learn how to build data pipelines.

Production-ready Docker Compose patterns. Health checks, resource limits, structured logging, secrets management, and multi-environment configs.

Coder provisions cloud development environments on Kubernetes, AWS, or any infrastructure. Learn how Coder replaces local dev setups with consistent, powerful.

Terraform variables and outputs. Types, validation rules, locals, sensitive values, tfvars files, and cross-module dependencies.

Kubernetes Pod Security Standards for workload hardening. Privileged, Baseline, and Restricted profiles with YAML and migration tips.

Steampipe lets you query AWS, Azure, GCP, Kubernetes, and GitHub using SQL. Learn how to audit cloud resources, check compliance, and build dashboards.

Handle errors gracefully in Ansible playbooks. Learn ignore_errors, rescue blocks, retries, assertions, and proven recovery patterns for reliable automation.

Chainguard Enforce validates container supply chain integrity in Kubernetes using SLSA provenance, SBOMs, and image signatures. Learn how to enforce supply.

Linux networking for DevOps. IP configuration, DNS, firewall rules, routing tables, packet capture with tcpdump, and troubleshooting.

Woodpecker CI is a lightweight, container-native CI/CD system you can self-host. Learn how Woodpecker compares to Drone, GitHub Actions, and GitLab CI.

Infracost shows cloud cost estimates for Terraform changes before you apply. Learn how to add cost visibility to pull requests and catch expensive.

Terraform providers for multi-cloud. Configuration, version pinning, aliases for multi-region, and debugging provider issues.

Kubernetes persistent storage explained: PVs, PVCs, StorageClasses, dynamic provisioning, StatefulSets, and backup strategies.

Rook deploys Ceph distributed storage on Kubernetes for block, file, and object storage. Learn how to set up Rook-Ceph for persistent volumes, shared.

K3s is a lightweight Kubernetes distribution that runs on edge devices, Raspberry Pis, and VMs with a single binary. Learn how to install K3s, add agents.

Docker networking for DevOps engineers. Bridge, host, and overlay networks, DNS discovery, port mapping, and container communication.

Flux v2 uses GitOps Toolkit controllers for source management, Kustomize, Helm, and notifications. Learn how to structure a Flux GitOps repository.

Run batch workloads in Kubernetes with Jobs and CronJobs. Parallelism, backoff policies, TTL cleanup, and scheduling best practices.

Taskfile is a modern alternative to Makefiles for task automation. Learn how to use Task for build scripts, development workflows, and CI/CD tasks with YAML.

HashiCorp Boundary provides identity-based access to infrastructure without VPNs or SSH keys. Learn how Boundary replaces bastion hosts and VPNs.

Use Helm hooks for database migrations, post-deploy verification, and rollback safety. Plus helm test and CI pipeline strategies.

Longhorn is a lightweight distributed storage system for Kubernetes. Learn how Longhorn provides replicated block storage, snapshots, and backups.

Terraform loops and conditionals. count, for_each, for expressions, dynamic blocks, and advanced patterns for DRY config code.

Dex is a federated OpenID Connect provider that integrates with LDAP, SAML, GitHub, and Google. Learn how to deploy Dex for Kubernetes authentication.

The three pillars of observability. Metrics, logs, and distributed traces with OpenTelemetry, Prometheus, Grafana, and Jaeger.

Encrypt secrets with Ansible Vault for secure automation. Cover file encryption, string-level vaulting, multi-password setups, and CI/CD pipeline integration.

Tilt automates the build-push-deploy loop for Kubernetes development. Learn how Tilt watches code changes, rebuilds containers, and updates deployments.

Configure Kubernetes liveness, readiness, and startup probes. HTTP, TCP, exec checks with proper timing and misconfiguration fixes.

Terratest lets you write automated tests for Terraform infrastructure using Go. Learn how to test Terraform modules, validate cloud resources, and integrate.

Grafana Mimir stores Prometheus metrics at massive scale using object storage. Learn how Mimir compares to Thanos and Cortex, and how to deploy it.

Manage environments with Terraform workspaces. CLI workspaces, Terraform Cloud workspaces, directory isolation, and trade-offs.

Werf is a CNCF tool that combines building, publishing, and deploying to Kubernetes into a single workflow. Learn how werf handles Dockerfiles, Helm charts.

Set Kubernetes CPU and memory requests and limits correctly. QoS classes, OOMKilled troubleshooting, and VPA right-sizing.

Kustomize customizes Kubernetes manifests without templates using overlays and patches. Learn how to manage multiple environments, merge configurations.

Manage Linux processes. ps, top, kill signals, background jobs, nice priorities, systemd services, and zombie process cleanup.

Configure Nginx as a production reverse proxy. Upstream pools, load balancing, SSL termination, caching, and rate limiting.

Secure Kubernetes clusters with network policies. Default deny rules, namespace isolation, pod-level controls, and CNI compatibility.

Use Ansible Galaxy to find, install, and manage reusable roles and collections. Learn requirements files, version pinning, and publishing your own content.

Import existing infrastructure into Terraform. Import blocks, auto-generated config, state manipulation, and migration strategies.

Deploy safely with Kubernetes strategies. Rolling updates, blue-green, canary releases, recreate mode, and automated rollback.

Master Linux file permissions. chmod, chown, umask, SUID, SGID, sticky bit, and ACLs with practical examples for system security.

Shrink Docker images with multi-stage builds. Separate build and runtime stages using distroless bases for Go, Node.js, Python, and Java.

Harden SSH servers for production. Key-based auth, disable root login, fail2ban, jump host architecture, and certificate-based auth.

Kubernetes service types explained. ClusterIP, NodePort, LoadBalancer, ExternalName, and headless services with YAML examples.

Master YAML for DevOps configuration. Scalars, lists, maps, anchors, multi-line strings, and common pitfalls to avoid in pipelines.

Kubernetes Operators for DevOps teams. CRDs, the controller pattern, popular community operators, and when to build your own.

Configure Terraform remote backends. S3 with DynamoDB locking, Azure Blob, GCS, Terraform Cloud, and state migration steps.

Master Ansible handlers for triggered actions. Learn to restart services, flush handlers, use handler chains, and implement idempotent notification patterns.

Secure container runtimes in production. Non-root users, read-only filesystems, seccomp profiles, AppArmor, and automated vulnerability scanning.

Write Prometheus alerting rules for production. PromQL expressions, severity levels, Alertmanager routing, and notification channels.

Get started with GitOps using ArgoCD on Kubernetes. Install ArgoCD, create applications, configure sync, and automate deployments.

Manage Linux disks with LVM. Physical volumes, volume groups, logical volumes, online resizing, snapshots, and migration strategies.

Handle Docker secrets safely. Environment variables, Swarm secrets, mounted config files, build secrets, and Vault integration patterns.

Back up and restore Kubernetes etcd. Snapshot procedures, automated schedules, restore workflows, and cluster health verification.

Use Makefiles to streamline container workflows. Build, test, push, deploy targets with environment variables and CI integration.

Prepare your infrastructure for quantum computing threats with post-quantum cryptography migration strategies and practical implementation steps.

Understand confidential computing with TEEs, secure enclaves, and practical deployment patterns for protecting sensitive workloads in cloud environments.

Implement data sovereignty with multi-region cloud infrastructure, GDPR compliance patterns, and geopatriation strategies for regulated workloads.

Shift from reactive to preemptive cybersecurity with automated threat detection, predictive vulnerability management, and proactive defense strategies.

Deploy and manage autonomous industrial systems with IIoT platforms, digital twins, predictive maintenance, and industrial DevOps practices.

Understand quantum computing fundamentals and their practical implications for DevOps engineers including cryptography, optimization, and infrastructure.

Assess and evolve your platform engineering practice with a maturity model covering self-service, golden paths, developer experience, and governance.

Build sustainable AI infrastructure with energy-efficient GPU scheduling, green computing practices, carbon-aware workloads, and cooling optimization.

Protect your platforms from AI-generated disinformation with content verification, bot detection, deepfake defense, and automated moderation pipelines.

Secure your software supply chain with SBOM generation, dependency verification, artifact signing, and SLSA framework compliance for CI/CD pipelines.