Add DigitalOcean provisioner

.gitignore

@@ -68,3 +68,9 @@ flycheck_*.el
 
 # cinder binary
 /openstack/standalone-cinder/cinder-provisioner
+
+# digitalocean binaries
+/digitalocean/digitalocean-flexplugin
+/digitalocean/deploy/docker/digitalocean-flexplugin
+/digitalocean/digitalocean-provisioner
+/digitalocean/deploy/docker/digitalocean-provisioner

digitalocean/Makefile

@@ -0,0 +1,48 @@
+# Copyright 2016 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+REGISTRY = quay.io/kubernetes_incubator
+IMAGE_FLEXPLUGIN = $(REGISTRY)/digitalocean-flexplugin
+IMAGE_PROVISONER = $(REGISTRY)/digitalocean-provisioner
+
+VERSION := latest
+
+all build:
+	GOOS=linux go install -v ./cmd/digitalocean-flexplugin
+	CGO_ENABLED=0 GOOS=linux go build ./cmd/digitalocean-flexplugin
+	GOOS=linux go install -v ./cmd/digitalocean-provisioner
+	CGO_ENABLED=0 GOOS=linux go build ./cmd/digitalocean-provisioner
+.PHONY: all build
+
+container: build quick-container
+.PHONY: container
+
+quick-container:
+	cp digitalocean-flexplugin deploy/docker/digitalocean-flexplugin
+	docker build -t $(IMAGE_FLEXPLUGIN):$(VERSION) -f deploy/docker/Dockerfile.flexplugin deploy/docker
+	cp digitalocean-provisioner deploy/docker/digitalocean-provisioner
+	docker build -t $(IMAGE_PROVISONER):$(VERSION) -f deploy/docker/Dockerfile.provisioner deploy/docker
+.PHONY: quick-container
+
+push: container
+	docker push $(IMAGE_FLEXPLUGIN):$(VERSION)
+	docker push $(IMAGE_PROVISONER):$(VERSION)
+.PHONY: push
+
+clean:
+	rm -f digitalocean-flexplugin
+	rm -f deploy/docker/digitalocean-flexplugin
+	rm -f digitalocean-provisioner
+	rm -f deploy/docker/digitalocean-provisioner
+.PHONY: clean

digitalocean/OWNERS

@@ -0,0 +1,2 @@
+approvers:
+  - klausenbusk

digitalocean/README.md

@@ -0,0 +1,25 @@
+# Kubernetes DigitalOcean provisioner
+
+This is an simple provisioner for DigitalOcean [Block Storage](https://www.digitalocean.com/products/storage/).
+
+**Deploy**
+
+1. Get a DigitalOcean access-token [here](https://cloud.digitalocean.com/settings/api/tokens).  
+   `base64` the token and insert it into [manifests/digitalocean-secret.yaml](manifests/digitalocean-secret.yaml).  
+   Create the secret: `kubectl create -f manifests/digitalocean-secret.yaml`
+2. Deploy the provisioner: `kubectl create -f manifests/digitalocean-provisioner.yaml`
+3. Adjust the `hostPath` in [manifests/digitalocean-flex-plugin-deploy.yaml](manifests/digitalocean-flex-plugin-deploy.yaml)  
+   Deploy the flex plugin "installer": `kubectl create -f manifests/digitalocean-flex-plugin-deploy.yaml`
+4. Modify the zone in [manifests/sc.yaml](manifests/sc.yaml)  
+   Deploy the default `StorageClass`: `kubectl create -f manifests/sc.yaml`
+5. (**optional**) Try it out with the example pod and PVC
+   ```
+   kubectl create -f examples/pvc.yaml
+   kubectl create -f examples/pod-application.yaml
+   ```
+
+**TODO**
+ - [ ] Support multi zones
+ - [x] Rewrite flexvolume plugin in Go
+ - [ ] Prevent k8s from scheduling more than 5 disks to a single droplet
+ - [ ] Improve documentation