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When Seafile Isn’t Enough, There’s OwnCloud

In an earlier post I wrote about using Seafile to provide secure private storage like Dropbox. Seafile specializes in file storage and sharing and works well if you’re an individual or an organization. What do you do if you want more? Enter ownCloud. ownCloud aspires to be your complete cloud storage solution, providing file storage, calendars, contacts, password management, photo …

What is a Docker?

What’s a Docker?

This past week I met with a mature company who has been delivering software solutions for more than 20 years. They know software. They know how to build it, package it, represent its value, and sell it. After a round of introductions one of their senior technologists turned to me and asked, “What’s a Docker?” This simple, incorrectly formed question …

Docker Hub on CloudSigma

How to Run Docker on CloudSigma (with CloudInit) Updated

In the past couple of years, Docker has received a tremendous amount of attention. While the concept of containers is hardly anything new (something we at CloudSigma talked more about in this previous post), Docker appears to have become the go-to container manager. To automatically deploy Docker at CloudSigma, you will need: An SSH key. Basic understanding of Docker. The official …

Docker Cloud Servers

Manage Docker resources with Cgroups

Last month I spoke at ApacheCon about Cgroups. It appears as very few Linux users (including yours truly until not too long ago) are familiar with Cgroups and their power. This is a pity, because Cgroups are very powerful, and allows you to allocate resources on your servers in a far more granular fashion than any other tool available in …

How to run Docker on CloudSigma (with CloudInit)

Pre-requisites: An SSH key. Basic understanding of Docker. The official documentation is a great start. In the recent year or so, Docker has received a tremendous amount of attention. It appears to be one of those things where the timing was just perfect. While the concept of containers is hardly anything new (which I talked more about in this previous …

Build your own PaaS (with Dokku)

One of the most popular PaaS providers today is Heroku. Heroku, along with other PaaS providers like Engine Yard is loved by developers because it makes the deployment of a new application extremely fast and simple. Since most developers rather write code than setting up and troubleshoot servers, it’s not hard to figure out why this approach is compelling. One …