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Setup Development Environment

Install the operator-sdk

Follow the instructions in the Quick Start section of https://github.com/operator-framework/operator-sdk to check out and install the operator-sdk tools.

With minikube

  1. Install and launch minikube

    https://kubernetes.io/docs/setup/minikube/

  2. Create a namespace to host the operator

    kubectl create namespace metal3

  3. Install operator-sdk

    eval $(go env)
mkdir -p $GOPATH/src/github.com/metal3-io
cd $GOPATH/src/github.com/metal3-io
git clone https://github.com/metal3-io/baremetal-operator.git
cd baremetal-operator
kubectl apply -f deploy/service_account.yaml -n metal3
kubectl apply -f deploy/role.yaml -n metal3
kubectl apply -f deploy/role_binding.yaml
kubectl apply -f deploy/crds/metal3.io_baremetalhosts_crd.yaml

  4. Launch the operator locally

    export OPERATOR_NAME=baremetal-operator
export DEPLOY_KERNEL_URL=http://172.22.0.1/images/ironic-python-agent.kernel
export DEPLOY_RAMDISK_URL=http://172.22.0.1/images/ironic-python-agent.initramfs
export IRONIC_ENDPOINT=http://localhost:6385/v1/
export IRONIC_INSPECTOR_ENDPOINT=http://localhost:5050/v1
operator-sdk up local --namespace=metal3

  5. Create the CR

    kubectl apply -f deploy/crds/example-host.yaml -n metal3

Running without Ironic

In environments where Ironic is not available, and the only real need is to be able to have some test data, use the test fixture provisioner instead of the real Ironic provisioner by passing -test-mode to the operator when launching it.

operator-sdk up local --operator-flags "-test-mode"

Running a local instance of Ironic

There is a script available that will run a set of containers locally using podman to stand up Ironic for development and testing.

See tools/run_local_ironic.sh.

Note that this script may need customizations to some of the podman run commands, to include environment variables that configure the containers for your environment.

Using libvirt VMs with Ironic

In order to use VMs as hosts, they need to be connected to vbmc and the bootMACAddress field needs to be set to the MAC address of the network interface that will PXE boot.

For example:

apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  name: worker-0
spec:
  online: true
  bmc:
    address: libvirt://192.168.122.1:6233/
    credentialsName: worker-0-bmc-secret
  bootMACAddress: 00:73:49:3a:76:8e

The make-virt-host utility can be used to generate a YAML file for registering a host. It takes as input the name of the virsh domain and produces as output the basic YAML to register that host properly, with the boot MAC address and BMC address filled in.

$ go run cmd/make-virt-host/main.go openshift_worker_1
---
apiVersion: v1
kind: Secret
metadata:
  name: openshift-worker-1-bmc-secret
type: Opaque
data:
  username: YWRtaW4=
  password: cGFzc3dvcmQ=

---
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  name: openshift-worker-1
spec:
  online: true
  bmc:
    address: libvirt://192.168.122.1:6234/
    credentialsName: openshift-worker-1-bmc-secret
  bootMACAddress: 00:1a:74:74:e5:cf

The output can be passed directly to kubectl apply like this:

go run cmd/make-virt-host/main.go openshift_worker_1 | kubectl apply -f -

When the host is a master, include the -consumer and -consumer-namespace options to associate the host with the existing Machine object.

$ go run cmd/make-virt-host/main.go -consumer ostest-master-1 \
  -consumer-namespace openshift-machine-api  openshift_master_1
---
apiVersion: v1
kind: Secret
metadata:
  name: openshift-master-1-bmc-secret
type: Opaque
data:
  username: YWRtaW4=
  password: cGFzc3dvcmQ=

---
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  name: openshift-master-1
spec:
  online: true
  bmc:
    address: libvirt://192.168.122.1:6231/
    credentialsName: openshift-master-1-bmc-secret
  bootMACAddress: 00:c9:a0:f2:e0:59
  consumerRef:
    name: ostest-master-1
    namespace: openshift-machine-api

Using Bare Metal Hosts

The make-bm-worker tool may be a more convenient way of creating YAML definitions for workers than editing the files directly.

$ go run cmd/make-bm-worker/main.go -address 1.2.3.4 \
  -password password -user admin worker-99
---
apiVersion: v1
kind: Secret
metadata:
  name: worker-99-bmc-secret
type: Opaque
data:
  username: YWRtaW4=
  password: cGFzc3dvcmQ=

---
apiVersion: metal3.io/v1alpha1
kind: BareMetalHost
metadata:
  name: worker-99
spec:
  online: true
  bmc:
    address: 1.2.3.4
    credentialsName: worker-99-bmc-secret