The Cloud Foundry Blog

New Release of Micro Cloud Foundry

We are excited to announce a new version of Micro Cloud Foundry™ with a new set of features. Among those new features is a new process to streamline frequent updates so that we can maintain compatibility between Micro Cloud Foundry and any Cloud Foundry-based clouds, including

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Micro Cloud Foundry is a complete version of the Cloud Foundry open PaaS, but it runs in a single virtual machine on a developer’s computer. Micro Cloud Foundry exemplifies how a multi-cloud approach to PaaS can help developers easily develop and test their applications locally and deploy to any Cloud Foundry-based clouds with no code or configuration changes.

Download the new Micro Cloud Foundry here.

In this blog, we will review notable new features and focus on how we will be releasing Micro Cloud Foundry going forward.

What’s New

We have a new Micro Cloud Foundry for you to download. Since the release of the last version (1.2), there have been many new features that have been implemented for Cloud Foundry. Now these features have been made available on Micro Cloud Foundry. Let’s review some of them:

  • Standalone apps support: This feature enables a new class of apps including background apps such as Resque workers, apps with bring-your-own-container, and Spring background tasks.
  • Enhanced Ruby support: While Cloud Foundry always offered auto-reconfiguration for relational databases for Ruby apps, we’ve since extended it to all service types, enabling many more applications to deploy to Cloud Foundry without changing a single line of code. We now also offer improved support for Rails 3.1 and 3.2 apps, Rack as a supported framework, the ability to run JRuby apps, and apps that specify git URLs in their Gemfiles along with numerous small improvements to make a much wider range of applications work well in Cloud Foundry.
  • Enhanced Java support: Java 7 support, which enables applications such as vert.x and containers that need NIO such as Netty.
  • Enhanced Scala support: We now offer explicit support for Play 2.0. You can also deploy apps using a Scala framework such as Unfiltered that requires Jetty and Blue Eyes that additionally requires the NIO support in Java 7.
  • Enhanced Node support: We took a comprehensive look at our Node.js support and made a series of improvements to make Node.js apps shine. We now offer NPM support, bringing it up to par with the Gemfile support for Ruby apps including support for packages specified as git URLs. We also offer auto-reconfiguration of all services for node.js apps.

Download the new Micro Cloud Foundry from the download site. While there, you may notice a few changes, especially the availability of multiple versions and curiously new version names. Let us explain what they mean.

Going Forward

One of the ways developers use Micro Cloud Foundry is to deploy applications during development, where Micro Cloud Foundry is used as proving ground. Rather than installing a web server (Tomcat, etc.), runtimes (Java, Ruby, etc.), and services (Postgres, MongoDB, etc.), you can do a single download of Micro Cloud Foundry, boot it up, and deploy your applications using ‘vmc push’. You can run Java and Node.js apps in debug mode, take advantage of JVM hotswap to obviate the need to restart apps after changes, use a shell to access applications and services in the Micro Cloud Foundry VM, and so on. And you could do all this without even being connected to the network thanks to the offline capability of Micro Cloud Foundry (allowing you to develop apps for the cloud while flying through the clouds!).  Once you have your app working, you can push it to, your own in-house Cloud Foundry cloud, or one of Cloud Foundry’s multi-cloud partners.

For all of this flow to really work, it is imperative that Micro Cloud Foundry has the same functionality as This means we must continually update Micro Cloud Foundry to keep up with all the new improvements in the core code. Our manual process of building and testing the Micro Cloud Foundry VM simply wouldn’t be up to the task. So we took a hard look at how to make this a better process, starting with this release.

This is how we will proceed:

  • Frequent releases: We will now release Micro Cloud Foundry whenever a change is pushed to (subject to passing automated testing). If you track the cf-release repository, you will see it tagged with a release version such as v116, v114, and so on. Micro Cloud Foundry versions will match the same tags (along with a timestamp) so you can tell if you need to update Micro Cloud Foundry in order to catch up with changes in Since the launch over a year ago, we have been updating about twice a week so you can expect a new Micro Cloud Foundry release at the same frequency. Later, we will consider releasing even more frequently for those who want to stay on the bleeding edge.
  • Automated building and testing: In the earlier releases, while we had scripts that would build Micro Cloud Foundry, there was some manual process involved. We also had a QA team testing Micro Cloud Foundry. This was in part necessitated by the requirement to run on multiple platforms (Fusion or Workstation for Mac, Windows, and Linux). Given our desire to update Micro Cloud Foundry bits at the same frequency as, automated building and testing becomes an obvious requirement. We have already automated building Micro Cloud Foundry and doing a basic verification. Over the coming months, we will automate most, if not all, aspects of building, testing, and distributing Micro Cloud Foundry. Of course, Micro Cloud Foundry like the rest of Cloud Foundry, is an open source project, so you can definitely pitch in.
  • Improved user interface: Automated testing requires that the tests be able to configure Micro Cloud Foundry. When we decided to automate building and testing, we realized that while there is a way to do this through the command interface (by directing terminal input and output), it is difficult to make this work in a robust manner. Independent of this, we have been pondering a web interface that will provide an experience similar to a home network router. In a few weeks, we will provide a REST interface to Micro Cloud Foundry along with a web interface replacing the terminal interaction.

We hope you will like what Micro Cloud Foundry has in store. You can follow our frequent releases on the Micro Cloud Foundry site.

-Ramnivas Laddad and Matt Boedicker
The Cloud Foundry Team

This entry was posted in Announcement, Apps, Cloud Foundry, Media, oss. Bookmark the permalink.

13 Responses to New Release of Micro Cloud Foundry

  1. Andy Piper says:

    Great work, guys! Exciting to see this update – and just reading this blog entry reminds me of just how much cool stuff has been added to the core since MCF 1.2 came out! I know a lot of the developers we talk to will be grateful for this.

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  3. Chris DeLashmutt says:

    Great news! I’m happy to see MCF releasing at the same rate as now.

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  5. Hantsy says:

    I have tried the 1.2 version, but encountered an exception when start up the MCF system, it noticed I have to enable the intel VT features.
    I am using a HP notebook, with i3 CPU, 4G memory, Windows 7 64bit, but I can not find such an option in the BISO settings.
    Is there possible to overcome this barrier?


    • Ramnivas Laddad says:

      Try the newly release v116 or newer version of Micro Cloud Foundry and if the problem still persist, report an issue.

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  7. Dimitri Hautot says:

    Good news guys, and thank you!

    Along with these more frequent updates, isn’t there a way to have a script automatically updating the virtual machine’s content with the latest available from

    • Ramnivas Laddad says:

      Welcome! Yes, that is one of the items on our list of possible improvements.

      • Andrew Serff says:

        I vote for this as well. Was just looking for a way to upgrade from v119 to v123 and I don’t see how to do it without downloading new the new VM, then making the custom changes again to the VM. That seems like a pain. Would be nice to just log into the VM, do a git pull or something from the vcap user and restart the VM. I realize that not all changes will be compatible and we might have to start fresh, but that is what the blog posts are for. Thanks for the great stuff!

  8. Adron Hall says:

    I second that, great work to the whole team. I’m working on getting Iron Foundry in sync with the new Micro CF right now. Really excited for some of the latest additions and changes. Cheers!

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