configuration secrets.md

Configure environment and secrets for Echo

Summary

Configuration and secrets for a Echo app on Ample. Verified on Echo: an --env value delivered encrypted and reported as present without being echoed (secret=set). Build and start: CGO_ENABLED=0 go build -o app ./... then ./app on the ubuntu-24.04 template (go.sum committed for a reproducible build).

Infrastructure requirements

Compute: verified (Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.)

Prerequisites

A Echo project (CGO_ENABLED=0 go build -o app ./... then ./app on the ubuntu-24.04 template (go.sum committed for a reproducible build))
An Ample account token with servers:write

Exact tested configuration

template: ubuntu-24.04
runtime: go
size: s-1vcpu-1gb
build: CGO_ENABLED=0 go build -o app ./...
start: ./app

Steps

Build and start. CGO_ENABLED=0 go build -o app ./... then ./app on the ubuntu-24.04 template (go.sum committed for a reproducible build); the server must bind 0.0.0.0 on PORT.
Pass values on deploy. Use --env KEY=value (repeatable) or --env-file; values are encrypted at rest and reused on redeploys. Declare names only in ample.toml.
```
ample deploy . --name <app-name> --public --env MY_SECRET=...
```
Verify. Fetch the live URL and /p/configuration-secrets on the example; on failure read the build and runtime logs.
```
ample logs <deployment_id> --kind build
```

Tested examples

Echo pattern fixture (tests/deploy-canaries/echo-patterns): Verified configuration and secrets on Echo.

Success checks

app responds on its public URL (/ on the live URL, expect ample canary echo patterns)
configuration-secrets check from the example (/p/configuration-secrets on the live URL, expect see the pattern fixture checks)

Limitations

Verified on the ubuntu-24.04 template at s-1vcpu-1gb; other sizes and Echo major versions are not verified.
Region, compliance attestations and request-duration limits are unknown and not claimed.

Cost estimate

Estimated 5.00 USD per month (size prices from pricing.toml at build revision a1b8c38919e59cd035ebabaced73cf84ece24371).

app server x1 s-1vcpu-1gb: 5.00 USD

Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

Verification evidence

canary_run on 2026-09-21T02:34:39Z at revision 1d28ae0-dirty (CLI 0.1.21): Echo pattern fixture deployed on Ample (CGO_ENABLED=0 go build -o app ./... then ./app on the ubuntu-24.04 template (go.sum committed for a reproducible build)); for this guide: an --env value delivered encrypted and reported as present without being echoed (secret=set). (expires 2027-03-20T02:34:39Z)

Last verified: 2026-09-21T02:34:39Z

Execution binding

MCP tool ample_deploy (registry mcp:ample_deploy), schema hash 876465fce906da0c observed 2026-09-21T03:19:59.461917+00:00 at revision 49962bcade4f, binding state current, required scopes: servers:write.