DevOps Beginner
Infrastructure as Code Principles¶
IaCInfrastructureAutomation 3 min read
Zakladni principy IaC. Proc, jak a best practices.
Proc IaC?¶
- Opakovatelnost - stejny kod = stejna infra
- Version control - historie v gitu
- Review - PR pro infra zmeny
- DR - obnova z kodu
Principley¶
- Vse v gitu
- Idempotence
- Immutable infrastructure
- Modularita
- Testovani
Tools and Best Practices¶
Terraform is the de facto standard for multi-cloud IaC with a declarative approach — you describe the desired state and Terraform ensures convergence. Pulumi allows writing infrastructure in regular programming languages (Python, TypeScript, Go). Ansible focuses on configuring existing servers.
Key rules: store the state file securely (S3 + DynamoDB lock for Terraform), use modules for reusable components, test infrastructure before deployment (terraform plan, Terratest, Checkov for security scanning), and never modify infrastructure manually (no ClickOps). Remote state and state locking prevent conflicts during parallel changes. Infrastructure drift detection regularly compares actual state with declared state and alerts on discrepancies.
Shrnuti¶
IaC = infrastruktura se softwarovymi praktikami. Zadne vymluvy pro ClickOps.
Need Help with Implementation?¶
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