Question 82355 in Docker Question posted in
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Giving all containers in a Kubernetes service access to the same shared file system – Docker

New to Docker/K8s. I need to be able to mount all the containers (across all pods) on my K8s cluster to a shared file system, so that they can all read from and write to files on this shared file system. The file system needs to be something residing inside of — or at the very least accessible to — all containers in the K8s cluster.

As far as I can tell, I have two options:

  1. I’m guessing K8s offers some type of persistent, durable block/volume storage facility? Maybe PV or PVC?
  2. Maybe launch a Dockerized Samba container and give my others containers access to it somehow?

Does K8s offer this type of shared file system capability or do I need to do something like a Dockerized Samba?

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Answers


  1. 0

    NFS is a common solution to provide you the file sharing facilities. Here‘s a good explanation with example to begin with. Samba can be used if your file server is Windows based.

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  2. 0

    You are right you can use the File system in the backend with Access Mode ReadWriteMany.

    ReadWirteMany will allow the container to mount to a single PVC and write on it.

    You can also use the NFS system as suggested by the gohm’c, for NFS you can set up the GlusterFS or MinIO containers.

    Read more about the Access mode ReadWriteMany : https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes

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