Tilt

Tilt — local K8s development with live updates and observability.

DevOpsModerate

Stack Components

ToolTilt 0.x

PlatformKubernetes

Why

Web UI for dev feedback, smart rebuilds, log aggregation across services. Docker is used by 59% of professional developers per the Stack Overflow 2024 survey, and Terraform is used by 65% of organizations for IaC (HashiCorp 2024).

GitOps (ArgoCD, Flux) reduces deployment drift to near-zero by making git the single source of truth.

When

Use for multi-service K8s local dev. Avoid for single-service projects.

How

1. Install tilt 2. Create Tiltfile 3. tilt up to start 4. View UI at localhost:10350 5. Add environment configuration — cp .env.example .env && edit values 6. Run tests — npm test or pnpm test to verify setup 7. Deploy — git push to trigger CI/CD or manual deploy

Example

docker_build('myapp', '.') k8s_yaml('k8s/') k8s_resource('myapp', port_forwards=8080) // Tilt — usage example import { Tilt } from "devops2-tilt"; const result = await tilt({ input: "data" }); console.log(result);

Common Problems

⚠Live update not triggering — check live_update() config
⚠Resource too broad — use k8s_resource to scope
⚠Configuration drift between environments — use infrastructure-as-code (Terraform/Pulumi) to keep dev/staging/prod identical

Best Practices

✓Use live_update for in-place container updates
✓Group related resources with k8s_resource
✓Set up health checks and graceful shutdown — handle SIGTERM to drain in-flight requests before exit

FAQ

What is Tilt and what projects is it for?

Tilt — local K8s development with live updates and observability. It pairs layered technologies for end-to-end type safety and out-of-the-box deploys, fitting everything from MVPs to production SaaS.

How do I spin up a working demo with Tilt in 10 minutes?

Two steps: (1) Install tilt; (2) Create Tiltfile. Get the local dev server running, then wire one real data source to verify the end-to-end loop.

What is the most common pitfall with Tilt and how do I avoid it?

The most common pitfall is: Live update not triggering — check live_update() config. Avoid it by adding the matching checklist to your PR template and running type-check + lint + unit tests in CI — three gates before merge.

What are the best practices for Tilt?

Best practices for Tilt include: Use live_update for in-place container updates; Group related resources with k8s_resource; Set up health checks and graceful shutdown — handle SIGTERM to drain in-flight requests before exit. The first one — "Use live_update for in-place container updates" — should be set up at project init to avoid costly rework later.

When should I NOT choose Tilt?

Pick something else in three cases: (1) the team has zero experience with the core framework and the deadline is tight (learning-curve risk); (2) it's a pure content/marketing site (Astro is lighter); (3) you need very high throughput (>10k RPS) or strict-consistency microservices (Go/Rust). Tilt shines for mid-to-high complexity full-stack and API work — don't over-engineer simple static pages with it.