kubespray/docs/external_storage_provisioners/rbd_provisioner.md

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# RBD Volume Provisioner for Kubernetes 1.5+
`rbd-provisioner` is an out-of-tree dynamic provisioner for Kubernetes 1.5+.
You can use it quickly & easily deploy ceph RBD storage that works almost
anywhere.
It works just like in-tree dynamic provisioner. For more information on how
dynamic provisioning works, see [the docs](https://kubernetes.io/docs/concepts/storage/persistent-volumes/)
or [this blog post](http://blog.kubernetes.io/2016/10/dynamic-provisioning-and-storage-in-kubernetes.html).
## Development
Compile the provisioner
```console
make
```
Make the container image and push to the registry
```console
make push
```
## Test instruction
* Start Kubernetes local cluster
See [Kubernetes](https://kubernetes.io/).
* Create a Ceph admin secret
```bash
ceph auth get client.admin 2>&1 |grep "key = " |awk '{print $3'} |xargs echo -n > /tmp/secret
kubectl create secret generic ceph-admin-secret --from-file=/tmp/secret --namespace=kube-system
```
* Create a Ceph pool and a user secret
```bash
ceph osd pool create kube 8 8
ceph auth add client.kube mon 'allow r' osd 'allow rwx pool=kube'
ceph auth get-key client.kube > /tmp/secret
kubectl create secret generic ceph-secret --from-file=/tmp/secret --namespace=kube-system
```
* Start RBD provisioner
The following example uses `rbd-provisioner-1` as the identity for the instance and assumes kubeconfig is at `/root/.kube`. The identity should remain the same if the provisioner restarts. If there are multiple provisioners, each should have a different identity.
```bash
docker run -ti -v /root/.kube:/kube -v /var/run/kubernetes:/var/run/kubernetes --privileged --net=host quay.io/external_storage/rbd-provisioner /usr/local/bin/rbd-provisioner -master=http://127.0.0.1:8080 -kubeconfig=/kube/config -id=rbd-provisioner-1
```
Alternatively, deploy it in kubernetes, see [deployment](deploy/README.md).
* Create a RBD Storage Class
Replace Ceph monitor's IP in [examples/class.yaml](examples/class.yaml) with your own and create storage class:
```bash
kubectl create -f examples/class.yaml
```
* Create a claim
```bash
kubectl create -f examples/claim.yaml
```
* Create a Pod using the claim
```bash
kubectl create -f examples/test-pod.yaml
```
## Acknowledgements
* This provisioner is extracted from [Kubernetes core](https://github.com/kubernetes/kubernetes) with some modifications for this project.