swarm

DockerSwarm/Creaate-Swarm.adoc

@@ -18,8 +18,12 @@ include::header.adoc[]
 
 == Swarm - Intro
 
-A swarm consists of one or more nodes: physical or virtual machines running Docker Engine 1.12 or later in swarm mode.
+Docker Swarm is a *clustering* and *scheduling* tool for Docker containers. With Swarm, IT administrators and developers can establish and manage a cluster of Docker nodes as a single virtual system. 
 
+Clustering is an important feature for container technology, because it creates a cooperative group of systems that can provide redundancy, enabling Docker Swarm failover if one or more nodes experience an outage.
+
+
+Features:
 
 - Decentralized design: Instead of handling differentiation between node roles at deployment time, the Docker Engine handles any specialization at runtime. You can deploy both kinds of nodes, managers and workers, using the Docker Engine.