Ceph
PLEASE NOTE: This document applies to v1.4 version and not to the latest stable release v1.9
Ceph Operator Helm Chart
Installs rook to create, configure, and manage Ceph clusters on Kubernetes.
Introduction
This chart bootstraps a rook-ceph-operator deployment on a Kubernetes cluster using the Helm package manager.
Prerequisites
- Kubernetes 1.13+
- Helm 3.x
See the Helm support matrix for more details.
Installing
The Ceph Operator helm chart will install the basic components necessary to create a storage platform for your Kubernetes cluster.
- Install the Helm chart
- Create a Rook cluster.
The helm install command deploys rook on the Kubernetes cluster in the default configuration. The configuration section lists the parameters that can be configured during installation. It is recommended that the rook operator be installed into the rook-ceph namespace (you will install your clusters into separate namespaces).
Rook currently publishes builds of the Ceph operator to the release and master channels.
Release
The release channel is the most recent release of Rook that is considered stable for the community.
helm repo add rook-release https://charts.rook.io/release
kubectl create namespace rook-ceph
helm install --namespace rook-ceph rook-ceph rook-release/rook-ceph
Development Build
To deploy from a local build from your development environment:
- Build the Rook docker image:
make - Copy the image to your K8s cluster, such as with the
docker savethen thedocker loadcommands - Install the helm chart:
cd cluster/charts/rook-ceph
kubectl create namespace rook-ceph
helm install --namespace rook-ceph rook-ceph .
For Helm v2.x the --name flag must be specified instead of just rook-ceph, e.g., --name rook-ceph.
Uninstalling the Chart
To see the currently installed Rook chart:
helm ls --namespace rook-ceph
To uninstall/delete the rook-ceph deployment:
helm delete --namespace rook-ceph rook-ceph
The command removes all the Kubernetes components associated with the chart and deletes the release.
Configuration
The following tables lists the configurable parameters of the rook-operator chart and their default values.
| Parameter | Description | Default |
|---|---|---|
image.repository |
Image | rook/ceph |
image.tag |
Image tag | master |
image.pullPolicy |
Image pull policy | IfNotPresent |
rbacEnable |
If true, create & use RBAC resources | true |
pspEnable |
If true, create & use PSP resources | true |
resources |
Pod resource requests & limits | {} |
annotations |
Pod annotations | {} |
logLevel |
Global log level | INFO |
nodeSelector |
Kubernetes nodeSelector to add to the Deployment. |
|
tolerations |
List of Kubernetes tolerations to add to the Deployment. |
[] |
unreachableNodeTolerationSeconds |
Delay to use for the node.kubernetes.io/unreachable pod failure toleration to override the Kubernetes default of 5 minutes | 5s |
currentNamespaceOnly |
Whether the operator should watch cluster CRD in its own namespace or not | false |
hostpathRequiresPrivileged |
Runs Ceph Pods as privileged to be able to write to hostPaths in OpenShift with SELinux restrictions. |
false |
mon.healthCheckInterval |
The frequency for the operator to check the mon health | 45s |
mon.monOutTimeout |
The time to wait before failing over an unhealthy mon | 600s |
discover.priorityClassName |
The priority class name to add to the discover pods | |
discover.toleration |
Toleration for the discover pods | |
discover.tolerationKey |
The specific key of the taint to tolerate | |
discover.tolerations |
Array of tolerations in YAML format which will be added to discover deployment | |
discover.nodeAffinity |
The node labels for affinity of discover-agent (***) |
|
csi.enableRbdDriver |
Enable Ceph CSI RBD driver. | true |
csi.enableCephfsDriver |
Enable Ceph CSI CephFS driver. | true |
csi.pluginPriorityClassName |
PriorityClassName to be set on csi driver plugin pods. | |
csi.provisionerPriorityClassName |
PriorityClassName to be set on csi driver provisioner pods. | |
csi.logLevel |
Set logging level for csi containers. Supported values from 0 to 5. 0 for general useful logs, 5 for trace level verbosity. | 0 |
csi.enableGrpcMetrics |
Enable Ceph CSI GRPC Metrics. | true |
csi.provisionerTolerations |
Array of tolerations in YAML format which will be added to CSI provisioner deployment. | |
csi.provisionerNodeAffinity |
The node labels for affinity of the CSI provisioner deployment (***) | |
csi.pluginTolerations |
Array of tolerations in YAML format which will be added to Ceph CSI plugin DaemonSet | |
csi.pluginNodeAffinity |
The node labels for affinity of the Ceph CSI plugin DaemonSet (***) | |
csi.csiRBDProvisionerResource |
CEPH CSI RBD provisioner resource requirement list. | |
csi.csiRBDPluginResource |
CEPH CSI RBD plugin resource requirement list. | |
csi.csiCephFSProvisionerResource |
CEPH CSI CephFS provisioner resource requirement list. | |
csi.csiCephFSPluginResource |
CEPH CSI CephFS plugin resource requirement list. | |
csi.cephfsGrpcMetricsPort |
CSI CephFS driver GRPC metrics port. | 9091 |
csi.cephfsLivenessMetricsPort |
CSI CephFS driver metrics port. | 9081 |
csi.rbdGrpcMetricsPort |
Ceph CSI RBD driver GRPC metrics port. | 9090 |
csi.rbdLivenessMetricsPort |
Ceph CSI RBD driver metrics port. | 8080 |
csi.forceCephFSKernelClient |
Enable Ceph Kernel clients on kernel < 4.17 which support quotas for Cephfs. | true |
csi.kubeletDirPath |
Kubelet root directory path (if the Kubelet uses a different path for the --root-dir flag) |
/var/lib/kubelet |
csi.cephcsi.image |
Ceph CSI image. | quay.io/cephcsi/cephcsi:v3.1.1 |
csi.rbdPluginUpdateStrategy |
CSI Rbd plugin daemonset update strategy, supported values are OnDelete and RollingUpdate. | OnDelete |
csi.cephFSPluginUpdateStrategy |
CSI CephFS plugin daemonset update strategy, supported values are OnDelete and RollingUpdate. | OnDelete |
csi.registrar.image |
Kubernetes CSI registrar image. | quay.io/k8scsi/csi-node-driver-registrar:v1.2.0 |
csi.resizer.image |
Kubernetes CSI resizer image. | quay.io/k8scsi/csi-resizer:v0.4.0 |
csi.provisioner.image |
Kubernetes CSI provisioner image. | quay.io/k8scsi/csi-provisioner:v1.6.0 |
csi.snapshotter.image |
Kubernetes CSI snapshotter image. | quay.io/k8scsi/csi-snapshotter:v2.1.1 |
csi.attacher.image |
Kubernetes CSI Attacher image. | quay.io/k8scsi/csi-attacher:v2.1.0 |
agent.flexVolumeDirPath |
Path where the Rook agent discovers the flex volume plugins (*) | /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ |
agent.libModulesDirPath |
Path where the Rook agent should look for kernel modules (*) | /lib/modules |
agent.mounts |
Additional paths to be mounted in the agent container (**) | |
agent.mountSecurityMode |
Mount Security Mode for the agent. | Any |
agent.priorityClassName |
The priority class name to add to the agent pods | |
agent.toleration |
Toleration for the agent pods | |
agent.tolerationKey |
The specific key of the taint to tolerate | |
agent.tolerations |
Array of tolerations in YAML format which will be added to agent deployment | |
agent.nodeAffinity |
The node labels for affinity of rook-agent (***) |
* For information on what to set agent.flexVolumeDirPath to, please refer to the Rook flexvolume documentation
* * agent.mounts should have this format mountname1=/host/path:/container/path,mountname2=/host/path2:/container/path2
* * * nodeAffinity and *NodeAffinity options should have the format "role=storage,rook; storage=ceph" or storage=;role=rook-example or storage=; (checks only for presence of key)
Command Line
You can pass the settings with helm command line parameters. Specify each parameter using the
--set key=value[,key=value] argument to helm install.
Settings File
Alternatively, a yaml file that specifies the values for the above parameters (values.yaml) can be provided while installing the chart.
For Helm v2.x the --name flag must be specified instead of just rook-ceph, e.g., --name rook-ceph.
helm install --namespace rook-ceph rook-ceph rook-release/rook-ceph -f values.yaml
For example settings, see values.yaml