Checkpoint and restore Docker containers with CRIU

A very good interview with one of the CRIU devs on FLOSS Weekly.<p><a href="https:&#x2F;&#x2F;twit.tv&#x2F;show&#x2F;floss-weekly&#x2F;334" rel="nofollow">https:&#x2F;&#x2F;twit.tv&#x2F;show&#x2F;floss-weekly&#x2F;334</a><p><a href="http:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=w5ftqjOrpfA" rel="nofollow">http:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=w5ftqjOrpfA</a><p>Some of this stuff is crazy. Moving processes is cool, but faking TCP&#x2F;IP state between containers to basically transfer a TCP&#x2F;IP stream from one machine to the other with client service devices noticing? INSANE.<p>I am a Linux enthusiast and very novice *nix sysadmin. It is worth the listen, even if you are not way into containerization, because what they have accomplished is impressive.

* Docker fork with CRIU support Known Issues:<p>Currently, networking is broken in this PR.<p>Although it&#x27;s implemented at the libcontainer level, the method used no longer works since the introduction of libnetwork.<p>There are likely several networking related issues to work out, like:<p>- ensuring IPs are reserved across daemon restarts<p>- ensuring port maps are reserved<p>- deciding how to deal with network resources in the &quot;new container&quot; model

I&#x27;ve made a talk about this a couple of months ago for a local meetup in argentina: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=0ZKE5nJFDJ0" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=0ZKE5nJFDJ0</a><p>I also would like to share something I did for the Docker global hackday: <a href="https:&#x2F;&#x2F;github.com&#x2F;marcosnils&#x2F;cmt" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;marcosnils&#x2F;cmt</a>.

Btw, the container migration will be supported by runC natively: <a href="https:&#x2F;&#x2F;github.com&#x2F;opencontainers&#x2F;runc&#x2F;tree&#x2F;master&#x2F;libcontainer#checkpoint--restore" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;opencontainers&#x2F;runc&#x2F;tree&#x2F;master&#x2F;libcontai...</a>

What are the posible practical uses of this technology ? I was thinking that could be useful to get &quot;snapshots&quot; of a system when a fatal exception is raised, then download the files and practice a forensic analysis. Maybe it&#x27;s too much overhead ? other uses?