fatherlinnux

126 karma · joined May 10, 2014

At Red Hat, Scott McCarty is technical product manager for the container subsystem team, which enables key product capabilities in OpenShift Container Platform and Red Hat Enterprise Linux. Focus areas includes container runtimes, tools, and images. Working closely with engineering teams, at both a product and upstream project level, he combines personal experience with customer and partner feedback to enhance and tailor strategic container features and capabilities.

fatherlinnuxon Things to avoid in Docker containers

Agreed, I was trying to help a friend implement the Actor model inside a container, and if you want to put every process in a different container, you basically have to talk tot he Kubernetes Daemon to do it (not fun).

I am fine with services. I am also fine with larger applications under duress. I think the format still makes operations lives easier. Containerize everything, is better than some things...

fatherlinnuxon Things to avoid in Docker containers

Or systemd /me ducks and runs :-)

fatherlinnuxon Docker isn't perfect – Issue #216

I just wish there was a -v during build and that -v supported any arbitrary mount like fstab. It would be nice if -v mapped directly to the mount namespace so could do things like:

iscsi:/data /data nfs://10.0.0.1:/data /data smb://10.0.0.1:/data /data ebs://10.0.0.1:/data /data

How much cooler would that be :-)

fatherlinnuxon Docker isn't perfect – Issue #216

Have fun with that. The Linux User Space will not work on a BSD kernel, so you would be forced into a BSD user space.

Now you are back at Square Zero. There is nothing wrong with the BSD, but it's just another different thing to learn and work with. I am skeptical this is the right way of looking at the problem.

Bottom line, the Linux Kernel changed, so Docker has to deal with it.

fatherlinnuxon Docker isn't perfect – Issue #216

Red Hat does not use a FUSE based file system. It's LVM Thin-p based....

fatherlinnuxon Why Docker Is Not Yet Succeeding Widely in Production

Just add registry server, that's where the magic is.

fatherlinnuxon Why Docker Is Not Yet Succeeding Widely in Production

Yeah, but the layered images and copy on write nature of Docker has not and IMHO, that is what is novel about this new wave of containers.

fatherlinnuxon Announcing Docker Machine, Swarm, and Compose for Orchestrating Distributed Apps

OpenStack????

fatherlinnuxon Announcing Docker Machine, Swarm, and Compose for Orchestrating Distributed Apps

The current version of OpenShift (2.X) is essentially Linux container based (selinux, cgroups, kernel namespaces). OpenShift 2.X has been running in production for years now (openshift.com). The reason something like Docker wasn't used is because nothing existed, so Red Hat had to invent something. From an app perspective it's fairly good for what it does.

fatherlinnuxon KVM and Docker LXC Benchmarking with OpenStack

Well I, for one, want to thank you for all of this work. I have done some benchmarks in the past, and they take a ton of work!!! It's easy to sit back and armchair quarterback about performance, but it's WAY more work to sit down and do this.

I encourage anybody that has problems with your experiment to go out and retest the results and share their work!