Question - nfs module is not loaded on the Docker host's kernel (try: modprobe nfs) about docker-nfs-server

[ehough]

Thanks for your question. I'm not personally familiar with RancherOS, but my understanding is that it uses a vanilla Linux kernel and therefore should work just fine with this image. We'll just need to get the proper kernel modules loaded.

I think the solution might be to load the kernel-extras package as described in this article. If I were you I would try the following commands:

$ sudo ros service enable kernel-extras
$ sudo ros service up kernel-extras
$ sudo modprobe nfs
$ sudo modprobe nfsd
$ docker run                                                           \
  -e NFS_EXPORT_0='/nfs/dgraph 192.168.25.0/24(rw,no_subtree_check)'   \
  -v /host/Dgraph:/nfs/dgraph                                          \
  --cap-add SYS_ADMIN                                                  \
  -p 2049:2049                                                         \
  erichough/nfs-server:latest

In theory this would load the nfs and nfsd kernel modules and you'll be all set. Give that a try?

[ehough]

Were you able to get things working? Please let us know.

Tidying up and closing this issue but feel free to re-open.

[MichelDiz]

Hey, sorry for the delay. I had some setbacks.

I started migrating to Rancher 2.0, they are using kubernetes now. I'm going to test your solution soon, but right now I'm using a solution from kubernetes-incubator. Called "nfs-provisioner", it is temporarily saving me. But I have seen that it will be discontinued.

Cheers!

[ivanxx]

Hi there, I can confirm this works on RancherOS 2.0. You only need to modprobe nfs and nfsd prior to lauch the docker image. I'm looking for a way to get those modules loaded on boot (I suppose this is done from the cloud-config.yml or ros config utility)