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Linux containers are a fantastic development tool and ready for production prime time. BSD has long had really good jails and having implemented this now for (development) purposes for cnx.org I can recommend them.

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It's also great to partition a large machine into smaller ones. Containers are not yet completely isolated from each other, but, if you own all the containers, it's a perfectly good solution and more flexible than virtualized hardware.

If you plan on separating your app and database servers to different machines, doing so from the start may be a clever idea.

I believe the only remaining hurdle for full isolation is user namespacing, which is slated to be implemented by the next LTS release.

How are you using them in production? Don't you need your deployment and development stacks to be using the same software versions more or less?

I am not yet using lxc in production, although I have used BSD jails in production for some time

I think their great use is because they are soooo sim ple to create a new "host" one is willing to use configurations of servers, develop onto clusters early and so find the problems early

I would credit virtualisation with the rise of devops - seriously

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