On 07/21/2014 03:27 PM, Peter Meier wrote: > SCLs are really something of the most innovative things that came out > within the EL-ecosystem in the past few years and which has the > potential to make the platform really more interesting for developers > and others that have "more modern" requirements than the latest major EL > release. I'll also toss a quick plug in for my personal favourite use of SCLs - legacy software. The ability to add more modern software in parallel is nice, but I often find I've got a lot of legacy code that needs to hang around for longer than I'd like. Shoving this older (often well past EOL) software in a corner where I don't have to touch it is strangely comforting. "Oh, your application requires this strange bug from OpenLDAP 2.1, ok I'll put that over here listening on localhost and you can deal with making your stuff talk to it" "You mean your software doesn't work with MySQL 5.1, ok here is a 5.0 server listening on localhost you can use" Then simply add stunnel with client validation and you're all set. There is a lot more upfront work, but migrating legacy apps has always been a real pain for me. I see the SCL technology as perhaps the greatest step forward on this front in a long time. This weird app requires these packages, fine here is a self-contained environment with all your stuff and I'll never touch it while fixing other issues. Docker may also be a benefit for this use case as well, but SCLs don't make "one more thing to manage". Pat -- Pat Riehecky Scientific Linux developer http://www.scientificlinux.org/