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v0.7.0
longhorn/chart
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Sheng Yang 5145d4ef8a Update chart to v0.7.0 
Signed-off-by: Sheng Yang <sheng.yang@rancher.com>
2019-11-14 22:56:00 -08:00
..
templates chart: Include old CRDs 2019-11-12 22:50:07 -08:00
.helmignore chart: added longhorn v0.4.1 chart 2019-05-08 18:15:34 -07:00
app-readme.md chart: added longhorn v0.4.1 chart 2019-05-08 18:15:34 -07:00
Chart.yaml Update chart to v0.7.0 2019-11-14 22:56:00 -08:00
questions.yml chart: Remove flexvolume 2019-11-12 12:15:32 -08:00
README.md chart: Update README for CRD cleanup 2019-11-12 22:50:07 -08:00
values.yaml Update chart to v0.7.0 2019-11-14 22:56:00 -08:00

README.md

Rancher Longhorn Chart

Please install Longhorn chart in longhorn-system namespace only.

The following document pertains to running Longhorn from the Rancher 2.0 chart.

Source Code

Longhorn is 100% open source software. Project source code is spread across a number of repos:

  1. Longhorn Engine -- Core controller/replica logic https://github.com/longhorn/longhorn-engine
  2. Longhorn Manager -- Longhorn orchestration, includes CSI driver for Kubernetes https://github.com/longhorn/longhorn-manager
  3. Longhorn UI -- Dashboard https://github.com/longhorn/longhorn-ui

Prerequisites

  1. Rancher v2.1+
  2. Docker v1.13+
  3. Kubernetes v1.14+
  4. Make sure curl, findmnt, grep, awk and blkid has been installed in all nodes of the Kubernetes cluster.
  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.

Uninstallation

  1. To prevent damage to the Kubernetes cluster, we recommend deleting all Kubernetes workloads using Longhorn volumes (PersistentVolume, PersistentVolumeClaim, StorageClass, Deployment, StatefulSet, DaemonSet, etc).

  2. From Rancher UI, navigate to Catalog Apps tab and delete Longhorn app.

Troubleshooting

I deleted the Longhorn App from Rancher UI instead of following the uninstallation procedure

Redeploy the (same version) Longhorn App. Follow the uninstallation procedure above.

Problems with CRDs

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!

# Delete CRD instances and definitions
curl -s https://raw.githubusercontent.com/longhorn/longhorn-manager/master/hack/cleancrds.sh |bash -s v062
curl -s https://raw.githubusercontent.com/longhorn/longhorn-manager/master/hack/cleancrds.sh |bash -s v070

Please see link for more information.