Monday, April 27, 2015

How To Deploy High Available Persistent Docker Services Using CoreOS And Consul

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Providing High Availability to stateless applications is pretty trivial as was shown in the previous blog posts A High Available Docker Container Platform and Rolling upgrade of Docker applications using CoreOS and Consul. But how does this work when you have a persistent service like Redis?

In this blog post we will show you how a persistent service like Redis can be moved around on machines in the cluster, whilst preserving the state. The key is to deploy a fleet mount configuration into the cluster and mount the storage in the Docker container that has persistent data.

To support persistency we have added a NAS to our platform architecture in the form of three independent NFS servers which act as our NAS storage, as shown in the picture below.

read more here

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