Fabian Lee : Software Engineer

Kubernetes: volumeMount, emptyDir, and env equivalents during local Docker development

April 14, 2022
Categories: Containers, Kubernetes

Kubernetes has a rich way of expressing volumes/ volumeMounts for mounting files, emptyDir for ephemeral directories, and env/envFrom for adding environment variables to your container definition running on a Kubernetes cluster. However, if you are actively iterating on the development of an image, it may slow you down to require a deployment to a remote … Kubernetes: volumeMount, emptyDir, and env equivalents during local Docker development

Kubernetes: NFS mount using dynamic volume and Storage Class

January 12, 2022
Categories: Containers

If you have an external NFS export and want to share that with a pod/deployment, you can leverage the nfs-subdir-external-provisioner to create a storageclass that can dynamically create the persistent volume. In contrast to manually creating the persistent volume and persistent volume claim, this dynamic method cedes the lifecycle of the persistent volume over to … Kubernetes: NFS mount using dynamic volume and Storage Class

Kubernetes: ReadWriteMany (RWX) NFS mount using static volume

January 11, 2022
Categories: Containers

If you have an external NFS server and want to share that volume in RWX mode (ReadWriteMany), the most basic way is to manually create the persistent volume and persistent volume claim. In this article, I will show you how to manually create a pv (persistent volume) representing an external NFS, and persistent volume claim … Kubernetes: ReadWriteMany (RWX) NFS mount using static volume

VMware: mounting a new NFSv4 datastore

August 22, 2021
Categories: Linux

If you want to create a new datastore backed by an NFSv4 share, this can be done either from the ESXi embedded web client or using esxcli. In this article, I will explain how to test a remote NFSv4 volume from an Ubuntu Linux server as validation. Then move on to mounting it as a … VMware: mounting a new NFSv4 datastore

Docker: Working with local volumes and tmpfs mounts

January 24, 2020
Categories: Containers, Linux

Volumes are the preferred method for persisting data for Docker containers. In this article, I will show how to create and use volumes for persistence, as well as tmpfs for temporary storage. At its absolute simplest, creating and mounting a volume backed by a local directory looks like: # make host directory mkdir -p /data … Docker: Working with local volumes and tmpfs mounts

Linux: Using xfs project quotas to limit capacity within a subdirectory

January 13, 2020
Categories: Linux

XFS is a journaled filesystem that has excellent parallel performance, and is licensed under the GPL which means it has been included in many Linux distributions. One of the features of XFS is the ability to enforce quotas based on user, group, and project. In this article, I will show how to assign filesize quotas … Linux: Using xfs project quotas to limit capacity within a subdirectory