A Postgres-backed External Node Classifier (ENC) for Puppet, written in Go. It replaces Cobbler as the source of truth for which role a host runs while keeping Puppet's node-classification contract byte-compatible.

Components

Binary	What it is
`encapi`	HTTP server: serves ENC documents + a read/write API. Postgres-backed.
`encapi-cli`	CLI over the API. `encapi-cli classify <host>` is the Puppet ENC.
`encapi-enc`	Thin wrapper (shipped in the RPM) for Puppet's `external_nodes`.

The Terraform provider lives in a sibling repo: terraform-provider-encapi.

Data model

status — a Puppet environment (Cobbler's "status": testing, production…).
role — a class assignment target (roles::infra::storage::vault) with inheritable default_params.
node — a host (certname) pinned to one role + one environment, with optional per-node params (which win over the role defaults).

Foreign keys guarantee a node can only reference a role/status that exists, and a role/status in use cannot be deleted.

ENC output

encapi renders two shapes from the same data:

GET /api/v1/nodes/{certname}/enc — the reshaped document Puppet's exec terminus consumes: classes as a list, environment dropped when it is testing, and parameters carrying enc_role (list) + enc_env. This is what encapi-cli classify prints.
GET /cblr/svc/op/puppet/hostname/{certname} — the cobbler-wire form (classes as a map, environment always present), so the legacy enc_direct_facts.rb fact can be repointed with only a URL change.

See docs/cutover.md for the migration from Cobbler.

API

Reads are open. Writes require Authorization: Bearer $ENCAPI_WRITE_TOKEN (set the token in the server's environment; manage it in Vault).

GET    /healthz
GET    /api/v1/nodes                      list nodes
GET    /api/v1/nodes/{certname}           get node
PUT    /api/v1/nodes/{certname}           upsert node        (token)
DELETE /api/v1/nodes/{certname}           delete node        (token)
GET    /api/v1/nodes/{certname}/enc       reshaped ENC (YAML)
GET    /cblr/svc/op/puppet/hostname/{h}   cobbler-wire ENC (YAML)
GET    /api/v1/roles       ... /roles/{name}      (PUT/DELETE token)
GET    /api/v1/statuses    ... /statuses/{name}   (PUT/DELETE token)

Configuration (server env)

Var	Default	Purpose
`LISTEN_ADDR`	`:8000`	listen address
`DBHOST/DBPORT/DBUSER/DBPASS/DBNAME/DBSSL`	localhost/5432/encapi/encapi/encapi/disable	Postgres
`ENCAPI_WRITE_TOKEN`	(unset)	bearer token for writes; unset = read-only
`ENCAPI_DISTRO_API_URL`	(unset)	optional kickstart/distro API for provisioning params

CLI

export ENCAPI_URL=https://encapi.k8s.syd1.au.unkin.net
export ENCAPI_WRITE_TOKEN=…            # only needed for writes

encapi-cli status set production
encapi-cli role set roles::infra::storage::minio --param 'replicas=4' --param 'epel="9"'
encapi-cli node set ausyd1nxvm2100.main.unkin.net --role roles::infra::storage::minio --env production
encapi-cli classify ausyd1nxvm2100.main.unkin.net

# one-shot migration from the live Cobbler estate:
encapi-cli import-cobbler --dry-run
encapi-cli import-cobbler

Local development

docker compose up -d          # postgres + encapi
make test                     # full suite (Postgres via testcontainers)
make test-short               # skip container-backed DB tests

Releases

encapi server image — tagging vX.Y.Z builds and pushes git.unkin.net/unkin/encapi:{tag,latest} (distroless).
encapi-cli RPM — the same tag builds an RPM (nfpm) and publishes it to the ArtifactAPI rpm-internal repo. Installs encapi-cli, the encapi-enc Puppet wrapper, and /etc/encapi/enc.conf.