Businesses are moving at different speeds on the road to containers. There’s a growing appreciation of the value of container technology (see my previous post The Irresistible Allure of Containers: 4 Big Benefits) and an ever-increasing number of implementations already in progress. Many organizations are now at the point where they’ve completed their initial proof of concept (PoC). But they’re wondering how to get from there to production, and how to sustain the momentum of their containerization effort as it runs into the complexities of operations.

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Privileged containers have been the reason for many discussions. There are security minded people who would like to eliminate them as well as technical people who need the feature to drive containerization. I’d like to show you how to be a technical person running a privileged container but honour security considerations by dropping capabilities as soon as they are not required.

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The article that follows is an extract from the last chapter of The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters book. It provides a good summary into the processes and tools we explored in the quest to build a self-sufficient cluster that can (mostly) operate without humans. We split the tasks that a self-sufficient system should…

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