DevOps

Manage environment files in system administration with best practices for secure handling and simple workflows. Practical tips for Linux and DevOps beginners to organize, version, and protect env vars.

Enable teams to integrate development, security, and operations via automated pipelines, shared ownership, continuous feedback, and measurable security controls for faster delivery

Diagram showing Istio service mesh setup: control plane (Pilot, Galley, Mixer), sidecar Envoy proxies injected to app pods, traffic routing, mTLS, telemetry, and policy enforcement

Microservices implementation guide: define bounded contexts, split services, design APIs, use containers & orchestration, enable CI/CD, observability, security, testing, versioning

How to Set Up Log Aggregation with ELK Stack Modern distributed systems

Helm chart overview: Chart.yaml, values.yaml and templates produce Kubernetes manifests; helm install creates versioned releases to deploy, configure and update containerized apps.

Blue-green deployment diagram: two identical production environments (blue and green) with load balancer switching traffic for zero-downtime releases and fast rollback on failures.

Diagram showing continuous testing in DevOps: automated unit, integration, and E2E tests in CI/CD pipeline; test environments, test data management, monitoring, and feedback loops.

Ansible configuration management workflow: set up control node, define inventory, write playbooks & roles, manage variables, secure SSH keys, run idempotent ansible-playbook tests.

GitOps workflow diagram: devs push code to Git; CI builds images; declarative manifests in repo drive automated CD to clusters; monitoring, alerts and Git-based rollback. in GitOps

Prometheus metrics and Grafana dashboard showing application latency, CPU, memory, error rates, custom metrics, alerts, query panels, time ranges and export options for SRE teams.

Jenkins pipeline diagram: checkout, build, test, package, push artifact, containerize, deploy to staging, run smoke tests, promote to production, notify teams, rollback if failure.