Tag Archives: LXC

LXD 0.3

LXD 0.3 has been released. This version provides huge usability improvements over past versions. Getting started Here’s an example of quickly getting started on a fresh Ubuntu 15.04 VM: sudo add-apt-repository ppa:ubuntu-lxc/lxd-daily sudo apt-get update sudo apt-get install lxd sudo … Continue reading

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Introducing lxcfs

Last year around this time, we were announcing the availability of cgmanager, a daemon allowing users and programs to easily administer and delegate cgroups over a dbus interface. It was key to supporting nested containers and unprivileged users. While its … Continue reading

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Live container migration – on its way

The criu project has been working hard to make application checkpoint/restart feasible. Tycho has implemented lxc-checkpoint and lxc-restart on top of that (as well as of course contributing the needed bits to criu itself), and now shows off first steps … Continue reading

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announcing lxc-snapshot

In April, lxc-clone gained the ability to create overlayfs snapshot clones of directory backed containers. In may, I wrote a little lxc-snap program based on that which introduced simple ‘snapshots’ to enable simple incremental development of container images. But a … Continue reading

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Creating and using containers – without privilege

Today I posted a (working but mainly POC) patchset against lxc which allows me to create and start ubuntu-cloud containers – completely as an unprivileged user. For more details see the introductory email to the patchset at http://sourceforge.net/mailarchive/forum.php?thread_name=1374246151-7069-9-git-send-email-serge.hallyn%40ubuntu.com&forum_name=lxc-devel Glossing over … Continue reading

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Introducing lxc-snap

lxc-snap: lxc container snapshot management tool BACKGROUND Lxc supports containers backed by overlayfs snapshots. The way this is typically done is to create a container backed by a regular directory, then create a new container which mounts the first container’s … Continue reading

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LXC – improved clone support

Recently I took some time to work on implementing container clones through the lxc API. lxc-clone previously existed as a shell script which could create snapshot clones of lvm and btrfs containers. There were several shortcomings to this: 1. clone … Continue reading

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User Namespaces LXC meeting

Last week we held an irc meeting to talk about user namespaces as they relate to lxc containers. The IRC log is posted at https://wiki.ubuntu.com/LxcUsernsIrcChat . I had two goals for this meeting. The first was to make sure that … Continue reading

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Full Ubuntu container confined in a user namespace

I’ve mentioned user namespaces here before, and shown how to play a bit with them. When a task is cloned into a new user namespace, the uids in the namespace can be mapped (1-1, in blocks) to uids on the … Continue reading

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deploying multiple (connected) lxc compute nodes – with juju

This post got delayed a bit due to a few unexpected complications. First, it turns out that you cannot connect GRE tunnels in Amazon’s EC2 over the instances’ private addresses. You must use the public addresses. Second, quantal removed the … Continue reading

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