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Today we would like to announce etcd, a highly available key value store for shared configuration data. CoreOS built etcd to solve the problem of shared configuration and service discovery. etcd is inspired by projects like Zookeeper, or doozer, but is a completely new piece of software. Some of the key design features:

System upgrades can introduce problems, and when upgrades go bad, manual steps need to be taken to get machines back up. The problem is compounded on public cloud infrastructure since you often have large numbers of machines, and getting to a recovery console can take a while.

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