Docker on Kenno's Open Note

Build Docker Client for ARMv8

Sun, 01 Oct 2017 12:51:48 +0000

The other day, after successfully building Docker-ce 17.06.0-dev for Odroid C2 which has ARMv8 CPU, i couldn’t find Docker client. Maybe it was just me not building the Docker engine correctly.

Anyway, after some more times, I also managed building the Docker client for the Odroid C2. It turned out, like many things, it wasn’t that hard after you figured it out. It’s worth to note too that the build instruction on https://github.com/docker/cli is to use Docker container. It didn’t work for me, and I decided to just build the Docker cli locally on the Odroid C2 instead.

Losing ZFS storage for Docker

Sun, 11 Sep 2016 01:09:40 +0000

I use ZFS as a storage driver for docker engine running on my machine. Today after my machine rebooted from a crash, yes Linux system crashes too, I notice that all my docker images and containers disappeared.

~ ❯❯❯ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
~ ❯❯❯ docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

First thing came to my mind was “did I accidentally destroy docker zfs data set last night?”

Docker with OverlayFS on Ubuntu 15.10

Sat, 26 Dec 2015 00:08:28 +0000

As of today, the default storage for Docker on (K)Ubuntu 15.10 is AUFS. I want to switch it to OverlayFS. Personally, I’m still new to Docker, but I did hear that OverlayFS is better than AUFS. You can read more about OverlayFS here.

Anyway, the purpose of this post is how to switch OverlayFS and avoid head-scratching.

On Ubuntu 15.10 (wily), one can start/stop services either using Upstart or systemd. Since I want to get more accustomed to using systemd, I’ve been trying to use it anywhere possible. For example, here’s the command to start docker: