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Do You Know Juno?

What's new in OpenStack 2014.2 "Juno"

Article from ADMIN 24/2014

By Martin Loschwitz

The OpenStack cloud platform plays a major role in the increasingly important cloud industry, so a new release is big news for cloud integrators and admins. The new version 2014.2 "Juno" release mostly cleans up and maintains the working model but adds a few innovations.

OpenStack no longer needs an introduction for system administrators working in the modern universe of the cloud. The open source cloud platform, which was originally created by Rackspace, is now supported by several leading cloud providers. The OpenStack project [1] relies on a strict cycle. New releases appear in April and October no matter what the cost. To date, the release manager, Thierry Carrez, has kept the project on schedule, and the latest OpenStack 2014.2 "Juno" release appeared on October 16.

Conservative Renewal

Juno continues in the OpenStack tradition as a carefully extended OpenStack distribution. The good news for admins is that the existing APIs remain compatible with those that are already in place. So if you use applications that talk directly to the APIs, you can continue to use them in Juno. All told, the amount of work involved in upgrading from the previous Icehouse edition to Juno is quite manageable.

After the chaos of the first versions of OpenStack, the developers understand that it is conducive to the prestige of the project if you leave no stone unturned between two releases. If things change, the developers announce the changes clearly, and at least one version in advance – enough time to prepare carefully and professionally for an upgrade.

Neutron

The Open vSwitch driver in OpenStack's Neutron networking component was tagged as deprecated in Icehouse. Juno no longer contains the driver, because it has been replaced by the "Modular Layer 2" framework, which is usually just called ML2 (Figure 1) . If you have a cloud, that uses the old openvswitchdriver, you need to switch to ML2.

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