rancher-machine-driver-oxide

= Oxide Rancher Machine Driver

This repository contains the Oxide Rancher machine driver, also known as a node
driver in Rancher parlance. Rancher uses this node driver to provision virtual
machines on Oxide that can then be used to deploy Kubernetes clusters.

== Building

Build the binary using `make`.

[source,sh]
----
make
----

== Deploying

The binary name must match the format `docker-machine-driver-*` (e.g.,
`docker-machine-driver-oxide`) otherwise Rancher will error when trying to use
the node driver.

=== Rancher Kubernetes

IMPORTANT: You must deploy the Oxide node driver using
the Kubernetes API rather than the Rancher UI otherwise
Rancher will be unable to use the Oxide node driver. See
https://github.com/oxidecomputer/rancher-machine-driver-oxide/issues/11 for
more information.

. Upload the `docker-machine-driver-oxide` binary somewhere accessible from
Rancher Kubernetes.

. Ensure your `kubectl` context is configured to use your Rancher Kubernetes
cluster.

. Create the following `oxide-nodedriver.yaml` Kubernetes manifest.
+
[source,yaml]
----
---
apiVersion: management.cattle.io/v3
kind: NodeDriver
metadata:
  name: oxide
  annotations:
    privateCredentialFields: token
    publicCredentialFields: host
    nodedriver.cattle.io/file-to-field-aliases: "userDataFile:userDataFile"
  finalizers:
  - controller.cattle.io/node-driver-controller
spec:
  active: true
  addCloudCredential: true
  builtin: false
  checksum: <SHA256SUM_OF_NODE_DRIVER_BINARY>
  description: "Oxide Rancher node driver."
  displayName: oxide
  externalId: ""
  uiUrl: ""
  url: "https://example.com/docker-machine-driver-oxide"
----

. Apply the Kubernetes manifest to create the Oxide Rancher node driver.
+
[source,sh]
----
kubectl apply -f oxide-nodedriver.yaml
----

=== Rancher Machine CLI

. Install https://github.com/rancher/machine[`rancher-machine`].

. Place the `docker-machine-driver-oxide` binary somewhere on `PATH`.

. Use `rancher-machine` to create an Oxide instance.
+
[source,sh]
----
rancher-machine create \
  --driver oxide \
  --oxide-additional-ssh-public-key-ids 529885a0-2919-463a-a588-ac48f100a165 \
  --oxide-boot-disk-image-id feb2c8ee-5a1d-4d66-beeb-289b860561bf \
  --oxide-boot-disk-size "21474836480" \
  --oxide-host https://silo01.oxide.example.com \
  --oxide-memory "4294967296" \
  --oxide-project exampleproject \
  --oxide-ssh-user ubuntu \
  --oxide-subnet "default" \
  --oxide-token oxide-token-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX \
  --oxide-vcpus "2" \
  --oxide-vpc "default" \
  example-oxide-machine
----

== Releasing

This project uses https://goreleaser.com/[GoReleaser] to build binaries and
create GitHub releases. The release process is as follows.

. Determine the version to be released. This could be a new major version or a
minor or patch version (e.g., `v1.0.0`).

. Determine the version control revision to be released (e.g., `1a0acaf`).
Usually this is the latest revision on the default branch for major version
releases but it could be another revision for minor or patch releases.

. Create a Git tag on the version control revision with a name that matches the
version to be released (e.g., `git tag -a v1.0.0 1a0acaf`).

. Push the newly created Git tag to GitHub (e.g., `git push origin v1.0.0`).

. Monitor the latest
https://github.com/oxidecomputer/rancher-machine-driver-oxide/actions/workflows/release.yaml[Release]
GitHub Actions job to ensure it runs successfully.

. Ensure the
https://github.com/oxidecomputer/rancher-machine-driver-oxide/releases[GitHub Releases]
page shows a new release for the desired version.

.. Update the description for the release as necessary.

.. Ensure the release is published, not a draft.