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Clarify what "networked host machines" means (#3657) 

Fixes #3646
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Misty Stanley-Jones 2017-06-19 11:52:02 -07:00 committed by GitHub
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14
engine/swarm/swarm-tutorial/index.md
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@ -26,20 +26,20 @@ If you are brand new to Docker, see [About Docker Engine](../../index.md).
To run this tutorial, you need the following: To run this tutorial, you need the following:
* [three networked host machines](#three-networked-host-machines) * [three Linux hosts which can communicate over a network, with Docker installed](#three-networked-host-machines)
* [Docker Engine 1.12 or later installed](#docker-engine-1-12-or-newer) * [Docker Engine 1.12 or later installed](#docker-engine-1-12-or-newer)
* [the IP address of the manager machine](#the-ip-address-of-the-manager-machine) * [the IP address of the manager machine](#the-ip-address-of-the-manager-machine)
* [open ports between the hosts](#open-protocols-and-ports-between-the-hosts) * [open ports between the hosts](#open-protocols-and-ports-between-the-hosts)
### Three networked host machines ### Three networked host machines
The tutorial uses three networked host machines as nodes in the swarm. These can This tutorial requires three Linux hosts which have Docker installed and can
be virtual machines on your PC, in a data center, or on a cloud service communicate over a network. These can be physical machines, virtual machines,
provider. This tutorial uses the following machine names: Amazon EC2 instances, or hosted in some other way.
One of these machines will be a manager (called `manager1`) and two of them will
be workers (`worker1` and `worker2`).
* manager1
* worker1
* worker2
>**Note**: You can follow many of the tutorial steps to test single-node swarm >**Note**: You can follow many of the tutorial steps to test single-node swarm
as well, in which case you need only one host. Multi-node commands will not as well, in which case you need only one host. Multi-node commands will not