Since about 2017, a group at Cisco has been working on an “OCI native operating system” under the title “project machine”, which is a terrible project name. I note that most of the people publicly involved in the project according to github commits no longer work at Cisco, so I cannot vouch for the health…
Tag: docker
Getting Vevor 7in1 weather stations working with rtl_433, MQTT, and Home Assistant
Now that we’ve defeated QNAP’s slightly broken udev, we can run a Docker container with rtl_433 in it to wire up our Vevor 7in1 weather station to Home Assistant via MQTT. First off, we need a Docker container running rtl_433, which assumes you’ve already setup the udev rule mentioned in the previous post, even if…
Issues building Kolla images with recent versions of Python requests
If you find yourself having issues building Kolla docker container images with errors like this: INFO:kolla.common.utils:Using engine: docker INFO:kolla.common.utils:Found the container image folder at /home/mikal/src/kerbside-patches/venv-stable/2023.1-patches/share/kolla/docker ERROR:kolla.common.utils:Unable to connect to container engine daemon, exiting INFO:kolla.common.utils:Exception caught: Error while fetching server API version: Not supported URL scheme http+docker It is likely that you’re running a recent version…
On-demand Container Loading in AWS Lambda
My team at work now has a daily personal learning time called “egg time” — its a slightly silly story involving a manager who was good at taking some time to learn things each day, and an egg shaped chair. Today I decided that I should read this paper about container image loading in AWS…
Interpreting whiteout files in Docker image layers
I’ve been playing again with Docker images and their internal layers a little more over the last week — you can see some of my previous adventures at Manipulating Docker images without Docker installed. The general thrust of these adventures is understanding the format and how to manipulate it by building a tool called Occy Strap…
Manipulating Docker images without Docker installed
Recently I’ve been playing a bit more with Docker images and Docker image repositories. I had in the past written a quick hack to let me extract files from a Docker image, but I wanted to do something a little more mature than that. For example, sometimes you want to download an image from a…
Quick hack: extracting the contents of a Docker image to disk
Hello! Please note I’ve written a little python tool called Occy Strap which makes this a bit easier, and can do some fancy things around importing and exporting multiple images. You might want to read about it? For various reasons, I wanted to inspect the contents of a Docker image without starting a container. Docker…
Juno nova mid-cycle meetup summary: containers
This is the second in my set of posts discussing the outcomes from the OpenStack nova juno mid-cycle meetup. I want to focus in this post on things related to container technologies. Nova has had container support for a while in the form of libvirt LXC. While it can be argued that this support isn’t…