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

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

Linux: 7zip to split archives for use on Windows

March 9, 2019
Categories: Linux

If you are transferring large files between systems, it can be advantageous to create a compressed archive using a tool like 7zip. Taking this a step further and splitting this archive into manageable chunks allows you to take advantage of parallel transfer. While there are many ways to do the same thing using utilities like … Linux: 7zip to split archives for use on Windows