Multipath is supported for the iscsi-based drivers. Configure multipath with multiple portals in the configuration as needed.

If you are running Kubernetes with rancher/rke, please see https://github.com/rancher/rke/issues/1846.

When using Windows based machines, you might need to enable guest access, even if you are connecting with credentials.

Set-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters AllowInsecureGuestAuth -Value 1
Restart-Service LanmanWorkstation -Force

Kubernetes is “an open-source system for automating deployment, scaling, and management of containerized applications.”

helm repo add democratic-csi https://democratic-csi.github.io/charts/
helm repo update

# helm v2
helm search democratic-csi/

# helm v3
helm search repo democratic-csi/

# copy proper values file from https://github.com/democratic-csi/charts/tree/master/stable/democratic-csi/examples
# edit as appropriate
# examples are from helm v2, alter as appropriate for v3

# add --create-namespace for helm v3
helm upgrade \
--install \
--values freenas-iscsi.yaml \
--namespace democratic-csi \
zfs-iscsi democratic-csi/democratic-csi
helm upgrade \
--install \
--values freenas-nfs.yaml \
--namespace democratic-csi \
zfs-nfs democratic-csi/democratic-csi

microk8s helm upgrade \
  --install \
  --values freenas-nfs.yaml \
  --set node.kubeletHostPath="/var/snap/microk8s/common/var/lib/kubelet"  \
  --namespace democratic-csi \
  zfs-nfs democratic-csi/democratic-csi

You can install multiple deployments of each or any driver. You will need:

• a new helm release name for each deployment
• a unique csiDriver.name in the values file
• a unique name for each storage class (per cluster)
• a unique parent dataset (don’t try to use the same parent across deployments or clusters)

Install beta (v1.17+) CRDs (once per cluster):

• https://github.com/kubernetes-csi/external-snapshotter/tree/master/client/config/crd

kubectl apply -f snapshot.storage.k8s.io_volumesnapshotclasses.yaml
kubectl apply -f snapshot.storage.k8s.io_volumesnapshotcontents.yaml
kubectl apply -f snapshot.storage.k8s.io_volumesnapshots.yaml

Install snapshot controller (once per cluster):

• https://github.com/kubernetes-csi/external-snapshotter/tree/master/deploy/kubernetes/snapshot-controller

# replace namespace references to your liking
kubectl apply -f rbac-snapshot-controller.yaml
kubectl apply -f setup-snapshot-controller.yaml

Install democratic-csi as usual with volumeSnapshotClasses defined as appropriate.

• https://kubernetes.io/docs/concepts/storage/volume-snapshots/
• https://github.com/kubernetes-csi/external-snapshotter#usage

# for sure required
--set node.rbac.openshift.privileged=true
--set node.driver.localtimeHostPath=false
# unlikely, but in special circumstances may be required
--set controller.rbac.openshift.privileged=true

• Visit the Kubectl Cheat Sheet or this Kubernetes CSI guide for more Kubernetes deployment and configuration information.

Nomad is a “simple and flexible workload orchestrator to deploy and manage containers and non-containerized applications across on-prem and clouds at scale.”

The democratic-csi works in Nomad with limited functionality and has to be deployed as a set of jobs. The controller job runs as a single instance, and the node job runs on every node and manages mounting the volume.

Read the Nomad Support page in the democratic-csi GitHub for detailed setup instructions. Visit the Nomad Storage Plugins page to learn how Nomad manages dynamic storage plugins.

Mesos is an open source cluster manager that abstracts CPU, memory, storage, and other compute resources away from machines (physical or virtual), enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.

Cloud Foundry is an open source cloud platform as a service (PaaS) on which developers can build, deploy, run and scale applications.