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Update GlusterFS examples readme.

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Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
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Humble Chirammal 2017-05-25 10:43:24 +05:30
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examples/volumes/glusterfs/README.md
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@ -2,15 +2,25 @@
[GlusterFS](http://www.gluster.org) is an open source scale-out filesystem. These examples provide information about how to allow containers use GlusterFS volumes.
There are couple of ways to use GlusterFS as a persistent data store in application pods.
*) Static Provisioning of GlusterFS Volumes.
*) Dynamic Provisioning of GlusterFS Volumes.
### Static Provisioning
Static Provisioning of GlusterFS Volumes is analogues to creation of a PV ( Persistent Volume) resource by specifying the parameters in it. This
also need a working GlusterFS cluster/trusted pool available to carve out GlusterFS volumes.
The example assumes that you have already set up a GlusterFS server cluster and have a working GlusterFS volume ready to use in the containers.
### Prerequisites
#### Prerequisites
* Set up a GlusterFS server cluster
* Create a GlusterFS volume
* If you are not using hyperkube, you may need to install the GlusterFS client package on the Kubernetes nodes ([Guide](http://gluster.readthedocs.io/en/latest/Administrator%20Guide/))
### Create endpoints
#### Create endpoints
The first step is to create the GlusterFS endpoints definition in Kubernetes. Here is a snippet of [glusterfs-endpoints.json](glusterfs-endpoints.json):
@ -52,7 +62,7 @@ $ kubectl create -f examples/volumes/glusterfs/glusterfs-service.json
```
### Create a Pod
#### Create a Pod
The following *volume* spec in [glusterfs-pod.json](glusterfs-pod.json) illustrates a sample configuration:
@ -93,11 +103,15 @@ You may execute the command `mount` inside the container to see if the GlusterFS
```sh
$ kubectl exec glusterfs -- mount | grep gluster
10.240.106.152:kube_vol on /mnt/glusterfs type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072)```
10.240.106.152:kube_vol on /mnt/glusterfs type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072)
```
You may also run `docker ps` on the host to see the actual container.
### Dynamic Provisioning of GlusterFS Volumes:
Dynamic Provisioning means provisioning of GlusterFS volumes based on a Storage class. Please refer [this guide](./../../persistent-volume-provisioning/README.md)
.
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