DevOps Troubleshooting & Fix Guides

Container Orchestration

Open-source container orchestration platform for automating deployment, scaling, and management of containerized applications. The de facto standard for running production workloads at scale.

Cloud Platforms

Amazon Web Services — the world's most comprehensive cloud platform with 200+ services including EC2, EKS, Lambda, S3, RDS, and a vast ecosystem for compute, storage, and networking.

Monitoring

Open-source monitoring and alerting toolkit. Pull-based metrics collection with a powerful query language (PromQL), built-in alerting, and native Kubernetes service discovery.

Infrastructure as Code

Infrastructure as Code tool by HashiCorp that lets you define cloud and on-premises resources in human-readable configuration files. Supports 3,000+ providers across every major cloud.

Networking

High-performance web server, reverse proxy, and load balancer. In Kubernetes, the Nginx Ingress Controller is the most widely deployed ingress solution for routing external traffic.

Containers

Platform for building, shipping, and running applications in containers. Docker pioneered the container revolution and remains the most popular container toolchain for development workflows.

Security

Secrets management and data protection platform. Vault secures, stores, and tightly controls access to tokens, passwords, certificates, and encryption keys with dynamic secrets and audit logging.

Configuration Management

Agentless IT automation platform by Red Hat. Define infrastructure, configuration, and application deployment using simple YAML playbooks. No agents needed — communicates over SSH.

Service Mesh

Open-source service mesh that provides traffic management, security, and observability for microservices. Built on Envoy proxy, Istio handles mTLS, canary deployments, circuit breaking, and distributed tracing.

CI/CD

The most widely adopted open-source automation server. Jenkins provides hundreds of plugins to support building, deploying, and automating any project with declarative and scripted pipelines.

Web Servers

The world's most used web server software. Apache httpd powers millions of websites with modules for URL rewriting, SSL/TLS, reverse proxying, authentication, and virtual hosting.

Observability

Open-source analytics and visualization platform. Create dashboards from Prometheus, Loki, Elasticsearch, and 150+ data sources. The standard for infrastructure observability.

Networking

Reliable, high-performance TCP/HTTP load balancer used by some of the world's highest-traffic websites. Provides advanced health checking, rate limiting, SSL termination, and connection management.

Cloud Platforms

Microsoft's cloud computing platform offering AKS, Azure DevOps, Functions, App Service, and deep integration with Active Directory, .NET, and hybrid cloud scenarios.

Cloud Platforms

Google's cloud platform excelling in data analytics (BigQuery), Kubernetes (GKE was the first managed K8s), machine learning, and serverless (Cloud Run, Cloud Functions).

CI/CD

CI/CD platform integrated directly into GitHub. Automate builds, tests, and deployments with YAML workflows triggered by repository events.

Kubernetes Packaging

The package manager for Kubernetes. Helm charts define, install, and upgrade Kubernetes applications with templated manifests, dependency management, and release tracking.

Artifact Management

Universal artifact repository manager by Sonatype. Store and manage Docker images, npm packages, Maven artifacts, PyPI packages, and more in a single platform with proxy and hosted repositories.

Networking

High-performance edge and service proxy designed for cloud-native applications. Originally built at Lyft, Envoy powers service meshes like Istio and provides advanced load balancing, observability, and traffic management.

GitOps

Declarative GitOps continuous delivery tool for Kubernetes. ArgoCD continuously monitors Git repositories and automatically syncs the desired application state to your clusters.

Networking

Linux-based high availability solution using VRRP (Virtual Router Redundancy Protocol). Provides failover for load balancers, virtual IPs, and health checking for real-server pools.

Artifact Management

Universal artifact management platform supporting 30+ package types. Enterprise-grade binary repository with build integration, access control, replication, and full DevOps pipeline support.

Cloud Platforms

Asia's largest cloud provider with global reach. Offers ACK (managed Kubernetes), ECS, Function Compute, and specialized services for e-commerce, fintech, and high-traffic workloads.

Linux Distributions

Enterprise-grade Linux distribution with commercial support, certification ecosystem, and 10-year lifecycle. The standard for regulated industries, with derivatives like Rocky Linux and AlmaLinux.

Security

Comprehensive open-source security scanner by Aqua Security. Scans container images, file systems, Git repos, and Kubernetes clusters for vulnerabilities, misconfigurations, and secrets.

Linux Distributions

The most popular Linux distribution for servers and cloud. Based on Debian with LTS releases, snap packages, and excellent community support. Powers most cloud instances worldwide.

Linux Distributions

Enterprise Linux platform with strong Kubernetes integration (Rancher). Known for YaST administration, transactional updates, and SAP HANA optimization. Popular in European enterprises.

Platform Engineering

Open-source developer portal by Spotify. Backstage provides a unified frontend for infrastructure tooling, services catalog, docs, and software templates.

Observability

Vendor-neutral observability framework for generating, collecting, and exporting telemetry data (traces, metrics, logs). CNCF project unifying instrumentation across languages and platforms.

Linux Distributions

Community-driven enterprise Linux designed as a 1:1 RHEL-compatible replacement after CentOS Stream. Founded by CentOS co-founder Gregory Kurtzer.

Linux Distributions

Lightweight, security-oriented Linux distribution. The default base image for minimal Docker containers due to its tiny footprint (~5MB). Uses musl libc and busybox.

Infrastructure as Code

Infrastructure as Code platform that lets you use general-purpose programming languages (TypeScript, Python, Go, C#, Java) to define and manage cloud infrastructure.

CI/CD

Built-in CI/CD platform in GitLab with pipeline-as-code, auto DevOps, and integrated security scanning. Single platform for source control, CI/CD, and DevSecOps.

Infrastructure as Code

Open-source framework for building cloud-native control planes. Extends Kubernetes to manage any infrastructure or managed service using custom resources and compositions.