Blog posts tagged "containers"

Follow the instructions in this article to spend around an hour over your lunch time to get an entire Ubuntu OpenStack cloud up and running in containers on a single machine. The resulting cloud will launch container based workloads. News about containers with OpenStack is everywhere right now. Be it OpenStack running on containers, runni

Juju is all about modeling your application. That means that an application can be in a docker container, use a configuration management utility on top of a traditional machine, or is a single binary golang application. This is the beauty of abstracting via models; we can concentrate on the applications themselves instead of their deliver

Over the last several months there has been noticeable and growing pain associated with the evolving integration tests around snapd, and given the project goal of being a cross-distribution platform, we are very keen on solving this problem appropriately so that stability is guaranteed everywhere.With that mindset a more focused effort wa

Juju is Canonical’s service modeling and deployment tool. It supports a very wide range of cloud providers to make it easy for you to deploy any service you want on any cloud you want.On top of that, Juju 2.0 also includes support for LXD, both for local deployments, ideal for development and as a way to co-locate services on a cloud inst

This is the ninth blog post in this series about LXD 2.0.IntroductionOne of the very exciting feature of LXD 2.0, albeit experimental, is the support for container checkpoint and restore.Simply put, checkpoint/restore means that the running container state can be serialized down to disk and then restored, either on the same host as a stat

Today Mesosphere announced the open source release of the DC/OS (Datacenter Operating System) Project, backed by dozens of partners including Canonical. DC/OS supplies an operating system model for the datacenter building on the Apache Mesos environment. The DC/OS project is an open source technology and a building ecosystem of more than

I’m thrilled to introduce Docker 1.10.3, supported on every Ubuntu architecture, for Ubuntu 16.04 LTS, and announce the General Availability of Ubuntu Fan Networking!That’s Ubuntu Docker binaries and Ubuntu Docker images for:armhf (rpi2, et al. IoT devices)arm64 (Cavium, et al. servers)i686 (does anyone seriously still run 32-bit intel se

This is the eighth blog post in this series about LXD 2.0.IntroductionIn the previous post I covered how to run Docker inside LXD which is a good way to get access to the portfolio of application provided by Docker while running in the safety of the LXD environment.One use case I mentioned was offering a LXD container to your users and th

This is the seventh blog post in this series about LXD 2.0.Why run Docker inside LXDAs I briefly covered in the first post of this series, LXD’s focus is system containers. That is, we run a full unmodified Linux distribution inside our containers. LXD for all intent and purposes doesn’t care about the workload running in the container. I

With the release of LXC 2.0 and LXD, we now have a pure-container hypervisor that delivers bare-metal performance with a standard Linux guest OS experience. Very low latency, very high density, and very high control of specific in-guest application processes compared to KVM and ESX make it worth checking out for large-scale Linux virtuali

This is the sixth blog post in this series about LXD 2.0.Remote protocolsLXD 2.0 supports two protocols:LXD 1.0 API: That’s the REST API used between the clients and a LXD daemon as well as between LXD daemons when copying/moving images and containers.Simplestreams: The Simplestreams protocol is a read-only, image-only protocol used by bo

Recently, LXD stopped depending on lxc, and thus moved to using its own bridge, called lxdbr0. lxdbr0 behaves significantly differently than lxcbr0: it is ipv6 link local only by default (i.e. there is no ipv4 or ipv6 subnet configured by default), and only HTTP traffic is proxied over the network. This means that e.g. you

This is the fifth blog post in this series about LXD 2.0.Container imagesIf you’ve used LXC before, you probably remember those LXC “templates”, basically shell scripts that spit out a container filesystem and a bit of configuration.Most templates generate the filesystem by doing a full distribution bootstrapping on your local machine. Th

This is the fourth blog post in this series about LXD 2.0.Available resource limitsLXD offers a variety of resource limits. Some of those are tied to the container itself, like memory quotas, CPU limits and I/O priorities. Some are tied to a particular device instead, like I/O bandwidth or disk usage limits.As with all LXD configuration,

This is the third blog post in this series about LXD 2.0.As there are a lot of commands involved with managing LXD containers, this post is rather long. If you’d instead prefer a quick step-by-step tour of those same commands, you can try our online demo instead!Creating and starting a new containerAs I mentioned in the previous posts, th

This is the second blog post in this series about LXD 2.0.Where to get LXD and how to install itThere are many ways to get the latest and greatest LXD. We recommend you use LXD with the latest LXC and Linux kernel to benefit from all its features but we try to degrade gracefully where possible to support older Linux distributions.The Ubun