* Docs: update sidebar

* Docs: move registry documentation into docs/

* Docs: move rbd_provisioner documentation into docs/

* Docs: move cephfs_provisioner into docs/

* Docs: move local_volume_provisioner documentation into docs/

* Docs: move ambassador.md to docs/ingress_controller/

* Docs: move metallb.md to docs/ingress_controller/

* Docs: move ingress_nginx documentation into docs/

* Docs: move alb_ingress_controller documentation into docs/

* Docs: merge ambassador documentation into docs/ingress_controller/

* Docs: move cert_manager documentation into docs/

* Docs: move bootstrap-os documentation into docs/

* Docs: update file locations in sidebar

2021-06-01 07:30:27 -07:00

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CephFS Volume Provisioner for Kubernetes 1.5+

Using Ceph volume client

Development

Compile the provisioner

make

Make the container image and push to the registry

make push

Test instruction

Start Kubernetes local cluster

See Kubernetes

Create a Ceph admin secret

ceph auth get client.admin 2>&1 |grep "key = " |awk '{print  $3'} |xargs echo -n > /tmp/secret
kubectl create ns cephfs
kubectl create secret generic ceph-secret-admin --from-file=/tmp/secret --namespace=cephfs

Start CephFS provisioner

The following example uses cephfs-provisioner-1 as the identity for the instance and assumes kubeconfig is at /root/.kube. The identity should remain the same if the provisioner restarts. If there are multiple provisioners, each should have a different identity.

docker run -ti -v /root/.kube:/kube -v /var/run/kubernetes:/var/run/kubernetes --privileged --net=host cephfs-provisioner /usr/local/bin/cephfs-provisioner -master=http://127.0.0.1:8080 -kubeconfig=/kube/config -id=cephfs-provisioner-1

Alternatively, deploy it in kubernetes, see deployment.

Create a CephFS Storage Class

Replace Ceph monitor's IP in example class with your own and create storage class:

kubectl create -f example/class.yaml

Create a claim

kubectl create -f example/claim.yaml

Create a Pod using the claim

kubectl create -f example/test-pod.yaml

Known limitations

Kernel CephFS doesn't work with SELinux, setting SELinux label in Pod's securityContext will not work.
Kernel CephFS doesn't support quota or capacity, capacity requested by PVC is not enforced or validated.
Currently each Ceph user created by the provisioner has allow r MDS cap to permit CephFS mount.

Acknowledgement

Inspired by CephFS Manila provisioner and conversation with John Spray

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