Partly cloudy

We’re approaching the finale of this little blog series. In the previous post I described how to make Galera, RabbitMQ and Memcached highly available. This article will be about the HA configuration of the OpenStack services, this blog series will then conclude with the migration process itself and what to be aware of in the last part (V).

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The previous post in this little series was about environment preparation to install the latest operating system and OpenStack version but preserve the database in order to migrate an existing Cloud environment to a newer platform. I mainly focused on the database as the most critical component.

This post will be about Galera, RabbitMQ and Memcached to continue the environment preparation. The next article will describe the high availability setup of the OpenStack services and then I’ll conclude with a last article dealing with the required steps for the actual migration.

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This article is the second part (find the previous post here) of the series about our OpenStack upgrade process. It will be about the preparation steps required to reach that goal, the key elements of the preparation were (not necessarily in that order):

• Upgrade the OpenStack database
• Create AutoYaST profiles
• Create salt states
• Prepare PXE installation

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