DevOps Engineer

Terraform Basics

Vì sao: You manage remote state and split a stack safely, so two engineers applying at once or a manual console edit does not corrupt the environment.

Configuration Management

Vì sao: You write idempotent playbooks and detect drift, so a server patched by hand during an incident is brought back to the declared state instead of staying a snowflake.

Docker Fundamentals

Vì sao: You build small images with sensible volumes and networks and compose a local stack, so a service behaves the same on a laptop and in the cluster.

Container Security

Vì sao: You scan images, drop root and keep secrets out of layers, so a vulnerable base image found in a scan is fixed before it reaches production.

Metrics & Dashboards

Vì sao: You expose service metrics and build a RED dashboard, so you can see error rate and latency rising after a deploy rather than hearing about it from users.

Log Aggregation

Vì sao: You ship structured logs to a central store, so during an outage you search one place by request id instead of logging into each host.