core-os How Do I Run a Java App with a GUI in Docker? Docker is best suited for running services vs. applications that have GUIs. However, it is possible to run applications that have X11 based GUIs on Docker using x11vnc. It is a rather complex topic. Let's start with the basics, HelloWorldSwing.java mkdir apps cat
core-os How Do I Add an SSH Key to CoreOS? I previously published a way to add an SSH Key to a CoreOS Droplet. It is quite complicated. However, I neglected to realize that after CoreOS is up and running, I can just add entries in ~/.ssh/authorized_keys. Doh. 1. ssh core@your_
core-os How Do I Install CoreOS in VirtualBox? Download and install VirtualBox. Download the CoreOS ISO Create a new VM in VirtualBox For the OS, Other Linux, 64-bit should be fine Give the VM 1gb of memory, like your physical hardware has. Create a disk of whatever size you want. I made
core-os How Do I Add an SSH Key to a DigitalOcean CoreOS Droplet? CoreOS runs the Docker container for useful-things.info. I'd like to say this container runs 100% of the time, but alas, it does not. When it doesn't, the site is not available. To fix the problem, I need to login to the CoreOS instance
core-os How Do I Keep a CoreOS Container Running Across Reboots? Problem: When running a single Docker container in CoreOS on a DigitalOcean Droplet, occasionally CoreOS is restarted by the service. This causes the Docker container to stop, but it is not restarted. To correct this, the container must be run with the --restart always
docker What Is The Best Source of Documentation for CoreOS Container Linux? CoreOS is a bit confusing. In reality, most things are done using Container Linux. Therefore, to do things with CoreOS you really need the Container Linux documentation. DigitalOcean has a really good introduction to the whole concept: An Introduction to CoreOS System Components However,
docker How Do I Login on a CoreOS Console? Container Linux is based on CoreOS which is specifically designed to run as a cloud service infrastructure. Container Linux is almost always run on virtualized or "headless" hardware, which doesn't require access to a console. Changes to the kernel and Linux configuration
docker How Do I Rebuild a DigitalOcean Droplet? Useful-Things.info runs in a DigitalOcean Droplet. This site has a specific IP address which is mapped to the useful-things.info domain. Let's say I want to run a new version of Linux in the Droplet, but keep the same IP address (so I
docker Why Use Ghost in a CoreOS Droplet? Useful-Things.info is implemented as a Ghost engine on CoreOS in a Droplet hosted by digitalocean.com. This seems rather obtuse and complicated, in fact, it's just the opposite. I've been using GoDaddy for hosting for a long time. They have a highly automated