I want to setup a PVC on AWS, where I need ReadWriteMany
as access mode. Unfortunately, EBS only supports ReadWriteOnce
.
How could I solve this?
ReadWriteMany
, but as said, this is still beta, and its installation looks somewhat flaky.ReadWriteOnce
, but this limits scalability.Are there any other ways of how to solve this? Basically, what I need is a way to store data in a persistent way to share it across pods that are independent of each other.
The EFS provisioner may be beta, but EFS itself is not. Since EFS volumes can be mounted via NFS, you can simply create a PersistentVolume
with a NFS volume source manually -- assuming that automatic provisioning is not a hard requirement on your side:
apiVersion: v1
kind: PersistentVolume
metadata:
name: my-efs-volume
spec:
capacity:
storage: 100Gi # Doesn't really matter, as EFS does not enforce it anyway
volumeMode: Filesystem
accessModes:
- ReadWriteMany
mountOptions:
- hard
- nfsvers=4.1
- rsize=1048576
- wsize=1048576
- timeo=600
- retrans=2
nfs:
path: /
server: fs-XXXXXXXX.efs.eu-central-1.amazonaws.com
You can then claim this volume using a PersistentVolumeClaim
and use it in a Pod (or multiple Pods) as usual.
If automatic provisioning is a hard requirement for you, there are alternative solutions you might look at: There are several distributed filesystems that you can roll out on yourcluster that offer ReadWriteMany
storage on top of Kubernetes and/or AWS. For example, you might take a look at Rook (which is basically a Kubernetes operator for Ceph). It's also officially still in a pre-release phase, but I've already worked with it a bit and it runs reasonably well.
There's also the GlusterFS operator, which already seems to have a few stable releases.