Install Rook/Ceph with Rancher deployed cluster

gistfile1.txt

- In Rancher, edit cluster, then edit Cluster Options as yaml and change the kubelet section as follows if needed:

```
  kubelet: 
    extra_args: 
      volume-plugin-dir: "/usr/libexec/kubernetes/kubelet-plugins/volume/exec"
    extra_binds: 
      - "/usr/libexec/kubernetes/kubelet-plugins/volume/exec:/usr/libexec/kubernetes/kubelet-plugins/volume/exec"
    fail_swap_on: false
```

- Clone repo

```
git clone https://github.com/rook/rook
cd rook/cluster/examples/kubernetes/ceph
```

- Check latest release and checkout that branch

```
git branch -r
git checkout -b release-0.9
```

- Install

Edit cluster.yaml and uncomment these lines:

```
storage:
    directories:
    - path: /var/lib/rook
```

**Also set allowMultiplePerNode to false before saving**.

Create resources:

```
kubectl create -f common.yaml
kubectl create -f operator.yaml
kubectl create -f cluster.yaml
kubectl create -f storageclass.yaml
kubectl create -f toolbox.yaml
kubectl create -f dashboard-ingress-https.yaml

watch kubectl -n rook-ceph get all => wait until mgr, mons, and osds are running. It may take a while especially for the OSDs
```

- Move rook-ceph namespace to Default project
- Set rook-ceph-block storage class as the default
- Change credentials for dashboard access

```
kubectl -n rook-ceph exec -it $(kubectl -n rook-ceph get pod -l "app=rook-ceph-tools" -o jsonpath='{.items[0].metadata.name}') bash
ceph dashboard set-login-credentials <username> <password>
```

- Edit the rook-ceph-mgr-dashboard L7 load balancer created above and change the hostname, TLS etc if needed

Nice done!