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Merge pull request #128 from humblec/readme

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update readme and correct linter errors.
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1
README.md
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@ -13,4 +13,3 @@ For example usage of RBD and CephFS CSI plugins, see examples in `examples/`.
## Troubleshooting
Please submit an issue at: [Issues](https://github.com/ceph/ceph-csi/issues)

56
docs/deploy-cephfs.md
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@ -7,26 +7,28 @@ The CSI CephFS plugin is able to both provision new CephFS volumes and attach an
CSI CephFS plugin can be compiled in a form of a binary file or in a form of a Docker image. When compiled as a binary file, the result is stored in `_output/` directory with the name `cephfsplugin`. When compiled as an image, it's stored in the local Docker image store.
Building binary:
```bash
$ make cephfsplugin
make cephfsplugin
```
Building Docker image:
```bash
$ make image-cephfsplugin
make image-cephfsplugin
```
## Configuration
**Available command line arguments:**
Option | Default value | Description
------ | ------------- | -----------
`--endpoint` | `unix://tmp/csi.sock` | CSI endpoint, must be a UNIX socket
`--drivername` | `csi-cephfsplugin` | name of the driver (Kubernetes: `provisioner` field in StorageClass must correspond to this value)
`--nodeid` | _empty_ | This node's ID
`--volumemounter` | _empty_ | default volume mounter. Available options are `kernel` and `fuse`. This is the mount method used if volume parameters don't specify otherwise. If left unspecified, the driver will first probe for `ceph-fuse` in system's path and will choose Ceph kernel client if probing failed.
`--metadatastorage` | _empty_ | Whether should metadata be kept on node as file or in a k8s configmap (`node` or `k8s_configmap`)
Option | Default value | Description
--------------------|-----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
`--endpoint` | `unix://tmp/csi.sock` | CSI endpoint, must be a UNIX socket
`--drivername` | `csi-cephfsplugin` | name of the driver (Kubernetes: `provisioner` field in StorageClass must correspond to this value)
`--nodeid` | _empty_ | This node's ID
`--volumemounter` | _empty_ | default volume mounter. Available options are `kernel` and `fuse`. This is the mount method used if volume parameters don't specify otherwise. If left unspecified, the driver will first probe for `ceph-fuse` in system's path and will choose Ceph kernel client if probing failed.
`--metadatastorage` | _empty_ | Whether should metadata be kept on node as file or in a k8s configmap (`node` or `k8s_configmap`)
**Available environmental variables:**
`KUBERNETES_CONFIG_PATH`: if you use `k8s_configmap` as metadata store, specify the path of your k8s config file (if not specified, the plugin will assume you're running it inside a k8s cluster and find the config itself).
@ -35,23 +37,25 @@ Option | Default value | Description
**Available volume parameters:**
Parameter | Required | Description
--------- | -------- | -----------
`monitors` | yes | Comma separated list of Ceph monitors (e.g. `192.168.100.1:6789,192.168.100.2:6789,192.168.100.3:6789`)
`mounter` | no | Mount method to be used for this volume. Available options are `kernel` for Ceph kernel client and `fuse` for Ceph FUSE driver. Defaults to "default mounter", see command line arguments.
`provisionVolume` | yes | Mode of operation. BOOL value. If `true`, a new CephFS volume will be provisioned. If `false`, an existing volume will be used.
`pool` | for `provisionVolume=true` | Ceph pool into which the volume shall be created
`rootPath` | for `provisionVolume=false` | Root path of an existing CephFS volume
`csiProvisionerSecretName`, `csiNodeStageSecretName` | for Kubernetes | name of the Kubernetes Secret object containing Ceph client credentials. Both parameters should have the same value
`csiProvisionerSecretNamespace`, `csiNodeStageSecretNamespace` | for Kubernetes | namespaces of the above Secret objects
Parameter | Required | Description
---------------------------------------------------------------|-----------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
`monitors` | yes | Comma separated list of Ceph monitors (e.g. `192.168.100.1:6789,192.168.100.2:6789,192.168.100.3:6789`)
`mounter` | no | Mount method to be used for this volume. Available options are `kernel` for Ceph kernel client and `fuse` for Ceph FUSE driver. Defaults to "default mounter", see command line arguments.
`provisionVolume` | yes | Mode of operation. BOOL value. If `true`, a new CephFS volume will be provisioned. If `false`, an existing volume will be used.
`pool` | for `provisionVolume=true` | Ceph pool into which the volume shall be created
`rootPath` | for `provisionVolume=false` | Root path of an existing CephFS volume
`csiProvisionerSecretName`, `csiNodeStageSecretName` | for Kubernetes | name of the Kubernetes Secret object containing Ceph client credentials. Both parameters should have the same value
`csiProvisionerSecretNamespace`, `csiNodeStageSecretNamespace` | for Kubernetes | namespaces of the above Secret objects
**Required secrets for `provisionVolume=true`:**
Admin credentials are required for provisioning new volumes
* `adminID`: ID of an admin client
* `adminKey`: key of the admin client
**Required secrets for `provisionVolume=false`:**
User credentials with access to an existing volume
* `userID`: ID of a user client
* `userKey`: key of a user client
@ -68,9 +72,9 @@ YAML manifests are located in `deploy/cephfs/kubernetes`.
**Deploy RBACs for sidecar containers and node plugins:**
```bash
$ kubectl create -f csi-attacher-rbac.yaml
$ kubectl create -f csi-provisioner-rbac.yaml
$ kubectl create -f csi-nodeplugin-rbac.yaml
kubectl create -f csi-attacher-rbac.yaml
kubectl create -f csi-provisioner-rbac.yaml
kubectl create -f csi-nodeplugin-rbac.yaml
```
Those manifests deploy service accounts, cluster roles and cluster role bindings. These are shared for both RBD and CephFS CSI plugins, as they require the same permissions.
@ -78,8 +82,8 @@ Those manifests deploy service accounts, cluster roles and cluster role bindings
**Deploy CSI sidecar containers:**
```bash
$ kubectl create -f csi-cephfsplugin-attacher.yaml
$ kubectl create -f csi-cephfsplugin-provisioner.yaml
kubectl create -f csi-cephfsplugin-attacher.yaml
kubectl create -f csi-cephfsplugin-provisioner.yaml
```
Deploys stateful sets for external-attacher and external-provisioner sidecar containers for CSI CephFS.
@ -87,7 +91,7 @@ Deploys stateful sets for external-attacher and external-provisioner sidecar con
**Deploy CSI CephFS driver:**
```bash
$ kubectl create -f csi-cephfsplugin.yaml
kubectl create -f csi-cephfsplugin.yaml
```
Deploys a daemon set with two containers: CSI driver-registrar and the CSI CephFS driver.
@ -95,8 +99,9 @@ Deploys a daemon set with two containers: CSI driver-registrar and the CSI CephF
## Verifying the deployment in Kubernetes
After successfuly completing the steps above, you should see output similar to this:
```bash
$ kubectl get all
kubectl get all
NAME READY STATUS RESTARTS AGE
pod/csi-cephfsplugin-attacher-0 1/1 Running 0 26s
pod/csi-cephfsplugin-provisioner-0 1/1 Running 0 25s
@ -114,4 +119,3 @@ You can try deploying a demo pod from `examples/cephfs` to test the deployment f
### Notes on volume deletion
Volumes that were provisioned dynamically (i.e. `provisionVolume=true`) are allowed to be deleted by the driver as well, if the user chooses to do so. Otherwise, the driver is forbidden to delete such volumes - attempting to delete them is a no-op.

54
docs/deploy-rbd.md
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@ -7,26 +7,28 @@ The RBD CSI plugin is able to provision new RBD images and attach and mount thos
CSI RBD plugin can be compiled in a form of a binary file or in a form of a Docker image. When compiled as a binary file, the result is stored in `_output/` directory with the name `rbdplugin`. When compiled as an image, it's stored in the local Docker image store.
Building binary:
```bash
$ make rbdplugin
make rbdplugin
```
Building Docker image:
```bash
$ make image-rbdplugin
make image-rbdplugin
```
## Configuration
**Available command line arguments:**
Option | Default value | Description
------ | ------------- | -----------
`--endpoint` | `unix://tmp/csi.sock` | CSI endpoint, must be a UNIX socket
`--drivername` | `csi-cephfsplugin` | name of the driver (Kubernetes: `provisioner` field in StorageClass must correspond to this value)
`--nodeid` | _empty_ | This node's ID
`--containerized` | true | Whether running in containerized mode
`--metadatastorage` | _empty_ | Whether should metadata be kept on node as file or in a k8s configmap (`node` or `k8s_configmap`)
Option | Default value | Description
--------------------|-----------------------|---------------------------------------------------------------------------------------------------
`--endpoint` | `unix://tmp/csi.sock` | CSI endpoint, must be a UNIX socket
`--drivername` | `csi-cephfsplugin` | name of the driver (Kubernetes: `provisioner` field in StorageClass must correspond to this value)
`--nodeid` | _empty_ | This node's ID
`--containerized` | true | Whether running in containerized mode
`--metadatastorage` | _empty_ | Whether should metadata be kept on node as file or in a k8s configmap (`node` or `k8s_configmap`)
**Available environmental variables:**
`HOST_ROOTFS`: rbdplugin searches `/proc` directory under the directory set by `HOST_ROOTFS`.
@ -37,16 +39,16 @@ Option | Default value | Description
**Available volume parameters:**
Parameter | Required | Description
--------- | -------- | -----------
`monitors` | one of `monitors` and `monValueFromSecret` must be set | Comma separated list of Ceph monitors (e.g. `192.168.100.1:6789,192.168.100.2:6789,192.168.100.3:6789`)
`monValueFromSecret` | one of `monitors` and `monValueFromSecret` must be set | a string pointing the key in the credential secret, whose value is the mon. This is used for the case when the monitors' IP or hostnames are changed, the secret can be updated to pick up the new monitors.
`pool` | yes | Ceph pool into which the RBD image shall be created
`imageFormat` | no | RBD image format. Defaults to `2`. See [man pages](http://docs.ceph.com/docs/mimic/man/8/rbd/#cmdoption-rbd-image-format)
`imageFeatures` | no | RBD image features. Available for `imageFormat=2`. CSI RBD currently supports only `layering` feature. See [man pages](http://docs.ceph.com/docs/mimic/man/8/rbd/#cmdoption-rbd-image-feature)
`csiProvisionerSecretName`, `csiNodePublishSecretName` | for Kubernetes | name of the Kubernetes Secret object containing Ceph client credentials. Both parameters should have the same value
`csiProvisionerSecretNamespace`, `csiNodePublishSecretNamespace` | for Kubernetes | namespaces of the above Secret objects
`mounter`| no | if set to `rbd-nbd`, use `rbd-nbd` on nodes that have `rbd-nbd` and `nbd` kernel modules to map rbd images
Parameter | Required | Description
-----------------------------------------------------------------|--------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
`monitors` | one of `monitors` and `monValueFromSecret` must be set | Comma separated list of Ceph monitors (e.g. `192.168.100.1:6789,192.168.100.2:6789,192.168.100.3:6789`)
`monValueFromSecret` | one of `monitors` and `monValueFromSecret` must be set | a string pointing the key in the credential secret, whose value is the mon. This is used for the case when the monitors' IP or hostnames are changed, the secret can be updated to pick up the new monitors.
`pool` | yes | Ceph pool into which the RBD image shall be created
`imageFormat` | no | RBD image format. Defaults to `2`. See [man pages](http://docs.ceph.com/docs/mimic/man/8/rbd/#cmdoption-rbd-image-format)
`imageFeatures` | no | RBD image features. Available for `imageFormat=2`. CSI RBD currently supports only `layering` feature. See [man pages](http://docs.ceph.com/docs/mimic/man/8/rbd/#cmdoption-rbd-image-feature)
`csiProvisionerSecretName`, `csiNodePublishSecretName` | for Kubernetes | name of the Kubernetes Secret object containing Ceph client credentials. Both parameters should have the same value
`csiProvisionerSecretNamespace`, `csiNodePublishSecretNamespace` | for Kubernetes | namespaces of the above Secret objects
`mounter` | no | if set to `rbd-nbd`, use `rbd-nbd` on nodes that have `rbd-nbd` and `nbd` kernel modules to map rbd images
**Required secrets:**
Admin credentials are required for provisioning new RBD images
@ -65,9 +67,9 @@ YAML manifests are located in `deploy/rbd/kubernetes`.
**Deploy RBACs for sidecar containers and node plugins:**
```bash
$ kubectl create -f csi-attacher-rbac.yaml
$ kubectl create -f csi-provisioner-rbac.yaml
$ kubectl create -f csi-nodeplugin-rbac.yaml
kubectl create -f csi-attacher-rbac.yaml
kubectl create -f csi-provisioner-rbac.yaml
kubectl create -f csi-nodeplugin-rbac.yaml
```
Those manifests deploy service accounts, cluster roles and cluster role bindings. These are shared for both RBD and CephFS CSI plugins, as they require the same permissions.
@ -75,8 +77,8 @@ Those manifests deploy service accounts, cluster roles and cluster role bindings
**Deploy CSI sidecar containers:**
```bash
$ kubectl create -f csi-rbdplugin-attacher.yaml
$ kubectl create -f csi-rbdplugin-provisioner.yaml
kubectl create -f csi-rbdplugin-attacher.yaml
kubectl create -f csi-rbdplugin-provisioner.yaml
```
Deploys stateful sets for external-attacher and external-provisioner sidecar containers for CSI RBD.
@ -84,7 +86,7 @@ Deploys stateful sets for external-attacher and external-provisioner sidecar con
**Deploy RBD CSI driver:**
```bash
$ kubectl create -f csi-rbdplugin.yaml
kubectl create -f csi-rbdplugin.yaml
```
Deploys a daemon set with two containers: CSI driver-registrar and the CSI RBD driver.
@ -119,7 +121,7 @@ The Helm chart is located in `deploy/rbd/helm`.
**Deploy Helm Chart:**
```bash
$ helm install ./deploy/rbd/helm
helm install ./deploy/rbd/helm
```
The Helm chart deploys all of the required resources to use the CSI RBD driver.

23
examples/README.md
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@ -1,22 +1,23 @@
## How to test RBD and CephFS plugins with Kubernetes 1.11
# How to test RBD and CephFS plugins with Kubernetes 1.11
Both `rbd` and `cephfs` directories contain `plugin-deploy.sh` and `plugin-teardown.sh` helper scripts. You can use those to help you deploy/tear down RBACs, sidecar containers and the plugin in one go. By default, they look for the YAML manifests in `../../deploy/{rbd,cephfs}/kubernetes`. You can override this path by running `$ ./plugin-deploy.sh /path/to/my/manifests`.
Once the plugin is successfuly deployed, you'll need to customize `storageclass.yaml` and `secret.yaml` manifests to reflect your Ceph cluster setup. Please consult the documentation for info about available parameters.
After configuring the secrets, monitors, etc. you can deploy a testing Pod mounting a RBD image / CephFS volume:
```bash
$ kubectl create -f secret.yaml
$ kubectl create -f storageclass.yaml
$ kubectl create -f pvc.yaml
$ kubectl create -f pod.yaml
kubectl create -f secret.yaml
kubectl create -f storageclass.yaml
kubectl create -f pvc.yaml
kubectl create -f pod.yaml
```
Other helper scripts:
* `logs.sh` output of the plugin
* `exec-bash.sh` logs into the plugin's container and runs bash
## How to test RBD Snapshot feature
Before continuing, make sure you enabled the required [feature gate](https://kubernetes-csi.github.io/docs/Setup.html#csi-volume-snapshot-support) in your Kubernetes cluster.
@ -26,14 +27,16 @@ In the `examples/rbd` directory you will find four files related to snapshots: [
Once you created your RBD volume, you'll need to customize at least `snapshotclass.yaml` and make sure the `monitors` and `pool` parameters match your Ceph cluster setup. If you followed the documentation to create the rbdplugin, you shouldn't have to edit any other file. If you didn't, make sure every parameters in `csi-snapshotter.yaml` reflect your configuration.
After configuring everything you needed, deploy the csi-snapshotter:
```bash
$ kubectl create -f csi-snapshotter-rbac.yaml
$ kubectl create -f csi-snapshotter.yaml
$ kubectl create -f snapshotclass.yaml
$ kubectl create -f snapshot.yaml
kubectl create -f csi-snapshotter-rbac.yaml
kubectl create -f csi-snapshotter.yaml
kubectl create -f snapshotclass.yaml
kubectl create -f snapshot.yaml
```
To verify if your volume snapshot has successfully been created, run the following:
```bash
$ kubectl get volumesnapshotclass
NAME AGE