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@@ -19,6 +19,7 @@ some pre-existing conditions before you can create one. These conditions are:
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* Access to a key-value store. Docker supports Consul, Etcd, and ZooKeeper (Distributed store) key-value stores.
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* A cluster of hosts with connectivity to the key-value store.
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* A properly configured Engine `daemon` on each host in the cluster.
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+* Hosts within the cluster must have unique hostnames because the key-value store uses the hostnames to identify cluster members.
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Though Docker Machine and Docker Swarm are not mandatory to experience Docker
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multi-host networking, this example uses them to illustrate how they are
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Vincent Demeester