Archive for the ‘Docker’ Category

Dockercon #2 is underway, version 1.7.0 of Docker was released at the end of last week, and lots of other new toys are being launched. Time for some upgrades. I got used to Docker always restarting containers when the daemon restarted, which included upgrades, but that behaviour went away around version 1.3.0 with the introduction […]


BanyanOps have published a report stating that ‘Over 30% of Official Images in Docker Hub Contain High Priority Security Vulnerabilities’, which include some of the sensational 2014 issues such as ShellShock and Heartbleed. The analysis also looks at user generated ‘general’ repositories and finds an even greater level of vulnerability. Their conclusion is that images […]


Yesterday I delivered a tutorial as part of the Open Network Users Group (ONUG) Academy: To go through the tutorial yourself you’ll need an AWS account and an SSH client (and the Internet access and browser you’re using to read this). To complement the slides there’s a wiki on GitHub with all of the relevant command […]


Docker Inc have worked with the Center for Internet Security (CIS) to produce a benchmark document [pdf] containing numerous recommendations for the security of Docker deployments. The benchmark was announced in a blog post ‘Understanding Docker Security and Best Practices’ by Diogo Mónica who was recently hired along with Nathan McCauley to lead theDocker Security […]


Last week Jérôme Petazzoni did an excellent (abbreviated) version of his ‘Deep dive into Docker storage drivers‘ at the London Docker Meetup. If I wasn’t convinced enough by that, Jessie Frazelle hammered home the same point in her QCon Presentation – AUFS is where it used to be at, and the new king is Overlay. I set about […]


ClusterHQ, the team behind Flocker, have announced Powerstrip, an Apache licensed tool to prototype Docker extensions. Powerstrip works as a proxy between the Docker command line interface (CLI) and the Docker daemon allowing the Docker API to be extended. The main advantage of this approach is that by extending the Docker interface, rather than wrapping […]


The announcement of Rocket by CoreOS was perceived by many to be a direct challenge to Docker, particularly as it came on the eve of DockerCon Europe and threatened to overshadow news coming out at the event. Docker, Inc. CEO Ben Golub was quick to fire back with his ‘initial thoughts on the Rocket announcement’. […]



Here’s my presentation from container.camp: If you’re interested in a deeper dive then take a look at the Container Networking Tutorial I did for ONUG.


Weave is an overlay networking system for Docker containers. Whilst Docker can already link containers on a single host, Weave provides connectivity for containers that are spread across multiple hosts. It has been released under the Apache 2 open source license by Zettio, a new company targeting ‘apps for the zettabyte era’ founded by RabbitMQ […]