chart: Remove flexvolume
Longhorn #358 Signed-off-by: Shuo Wu <shuo@rancher.com>
This commit is contained in:
Shuo Wu
Sheng Yang
parent
62cc78c922
commit
24fa15dc05
@ -8,15 +8,15 @@ The following document pertains to running Longhorn from the Rancher 2.0 chart.
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Longhorn is 100% open source software. Project source code is spread across a number of repos:
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1. Longhorn Engine -- Core controller/replica logic https://github.com/rancher/longhorn-engine
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2. Longhorn Manager -- Longhorn orchestration, includes Flexvolume driver for Kubernetes https://github.com/rancher/longhorn-manager
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3. Longhorn UI -- Dashboard https://github.com/rancher/longhorn-ui
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1. Longhorn Engine -- Core controller/replica logic https://github.com/longhorn/longhorn-engine
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2. Longhorn Manager -- Longhorn orchestration, includes CSI driver for Kubernetes https://github.com/longhorn/longhorn-manager
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3. Longhorn UI -- Dashboard https://github.com/longhorn/longhorn-ui
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## Prerequisites
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1. Rancher v2.1+
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2. Docker v1.13+
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3. Kubernetes v1.8+ cluster with 1 or more nodes and Mount Propagation feature enabled. If your Kubernetes cluster was provisioned by Rancher v2.0.7+ or later, MountPropagation feature is enabled by default. [Check your Kubernetes environment now](https://github.com/rancher/longhorn#environment-check-script). If MountPropagation is disabled, the Kubernetes Flexvolume driver will be deployed instead of the default CSI driver. Base Image feature will also be disabled if MountPropagation is disabled.
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3. Kubernetes v1.14+
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4. Make sure `curl`, `findmnt`, `grep`, `awk` and `blkid` has been installed in all nodes of the Kubernetes cluster.
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5. Make sure `open-iscsi` has been installed in all nodes of the Kubernetes cluster. For GKE, recommended Ubuntu as guest OS image since it contains `open-iscsi` already.
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@ -37,23 +37,10 @@ Redeploy the (same version) Longhorn App. Follow the uninstallation procedure ab
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If your CRD instances or the CRDs themselves can't be deleted for whatever reason, run the commands below to clean up. Caution: this will wipe all Longhorn state!
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```
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# Delete CRD finalizers, instances and definitions
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for crd in $(kubectl get crd -o jsonpath={.items[*].metadata.name} | tr ' ' '\n' | grep longhorn.rancher.io); do
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kubectl -n ${NAMESPACE} get $crd -o yaml | sed "s/\- longhorn.rancher.io//g" | kubectl apply -f -
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kubectl -n ${NAMESPACE} delete $crd --all
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kubectl delete crd/$crd
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done
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# Delete CRD instances and definitions
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curl -s https://raw.githubusercontent.com/longhorn/longhorn-manager/master/hack/cleancrs.sh |bash -s v062
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curl -s https://raw.githubusercontent.com/longhorn/longhorn-manager/master/hack/cleancrs.sh |bash -s v070
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```
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### Volume can be attached/detached from UI, but Kubernetes Pod/StatefulSet etc cannot use it
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Check if volume plugin directory has been set correctly. This is automatically detected unless user explicitly set it.
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By default, Kubernetes uses `/usr/libexec/kubernetes/kubelet-plugins/volume/exec/`, as stated in the [official document](https://github.com/kubernetes/community/blob/master/contributors/devel/flexvolume.md#prerequisites).
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Some vendors choose to change the directory for various reasons. For example, GKE uses `/home/kubernetes/flexvolume` instead.
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User can find the correct directory by running `ps aux|grep kubelet` on the host and check the `--volume-plugin-dir` parameter. If there is none, the default `/usr/libexec/kubernetes/kubelet-plugins/volume/exec/` will be used.
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---
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Please see [link](https://github.com/rancher/longhorn) for more information.
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Please see [link](https://github.com/longhorn/longhorn) for more information.
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@ -4,73 +4,62 @@ labels:
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io.rancher.certified: experimental
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namespace: longhorn-system
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questions:
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- variable: driver
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default: csi
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description: "Deploy either the CSI or FlexVolume driver. CSI is newer but requires MountPropagation, a feature enabled by default in Kubernetes v1.10 and later"
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type: enum
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options:
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- csi
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- flexvolume
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label: Longhorn Kubernetes Driver
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group: "Longhorn Driver Settings"
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show_subquestion_if: flexvolume
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subquestions:
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- variable: persistence.flexvolumePath
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default: ""
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description: "Leave blank to autodetect. For RKE, use `/var/lib/kubelet/volumeplugins`. For GKE, use `/home/kubernetes/flexvolume/` instead. Users can find the correct directory by running `ps aux|grep kubelet` on the host and check the --volume-plugin-dir parameter. If there is none, the default `/usr/libexec/kubernetes/kubelet-plugins/volume/exec/` will be used."
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type: string
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label: Longhorn Flexvolume Path
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show_subquestion_if: csi
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subquestions:
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- variable: csi.attacherImage
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default:
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description: "Specify CSI attacher image. Leave blank to autodetect."
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type: string
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label: Longhorn CSI Attacher Image
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group: "Longhorn CSI Driver Settings"
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- variable: csi.provisionerImage
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default:
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description: "Specify CSI provisioner image. Leave blank to autodetect."
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type: string
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label: Longhorn CSI Provisioner Image
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group: "Longhorn CSI Driver Settings"
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- variable: csi.driverRegistrarImage
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default:
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description: "Specify CSI Driver Registrar image. Leave blank to autodetect."
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type: string
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label: Longhorn CSI Driver Registrar Image
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group: "Longhorn CSI Driver Settings"
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- variable: csi.kubeletRootDir
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default:
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description: "Specify kubelet root-dir. Leave blank to autodetect."
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type: string
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label: Kubelet Root Directory
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group: "Longhorn CSI Driver Settings"
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- variable: csi.attacherReplicaCount
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type: int
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default:
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min: 1
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max: 10
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description: "Specify number of CSI Attacher replica. By default 3."
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description: "Specify replica count of CSI Attacher. By default 3."
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label: Longhorn CSI Attacher replica count
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group: "Longhorn CSI Driver Settings"
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- variable: csi.provisionerReplicaCount
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type: int
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default:
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min: 1
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max: 10
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description: "Specify number of CSI Provisioner replica. By default 3."
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description: "Specify replica count of CSI Provisioner. By default 3."
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label: Longhorn CSI Provisioner replica count
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group: "Longhorn CSI Driver Settings"
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- variable: persistence.defaultClass
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default: "true"
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description: "Set as default StorageClass"
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group: "Longhorn Driver Settings"
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group: "Longhorn CSI Driver Settings"
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type: boolean
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required: true
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label: Default Storage Class
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- variable: persistence.defaultClassReplicaCount
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description: "Set replica count for default StorageClass"
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group: "Longhorn Driver Settings"
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group: "Longhorn CSI Driver Settings"
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type: int
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default: 3
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min: 1
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max: 10
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label: Default Storage Class Replica Count
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- variable: defaultSettings.backupTarget
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label: Backup Target
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description: "The target used for backup. Support NFS or S3."
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@ -29,8 +29,6 @@ spec:
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- "{{ .Values.image.longhorn.manager }}:{{ .Values.image.longhorn.managerTag }}"
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- --manager-url
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- http://longhorn-backend:9500/v1
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- --driver
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- "{{ .Values.driver }}"
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env:
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- name: POD_NAMESPACE
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valueFrom:
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@ -44,8 +42,6 @@ spec:
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valueFrom:
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fieldRef:
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fieldPath: spec.serviceAccountName
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- name: FLEXVOLUME_DIR
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value: {{ .Values.persistence.flexvolumePath }}
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{{- if .Values.csi.kubeletRootDir }}
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- name: KUBELET_ROOT_DIR
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value: {{ .Values.csi.kubeletRootDir }}
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@ -19,13 +19,7 @@ service:
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type: ClusterIP
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nodePort: ""
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# deploy either 'flexvolume' or 'csi' driver
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driver: csi
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persistence:
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# for GKE uses /home/kubernetes/flexvolume/ instead, User can find the correct directory by running ps aux|grep kubelet on the host and check the --volume-plugin-dir parameter.
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# If there is none, the default /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ will be used.
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flexvolumePath:
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defaultClass: true
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defaultClassReplicaCount: 3
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