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-# examples-nodejs
+#  Nodejs-based ecosystem 
 
+## Instance of Ubuntu with Nodejs-based tools
+
+*A vlab enviroment ready for learning*
+
+- Web Applications and APIs with express
+- WebSocket Client & Server Implementation for Node
+- Learn How to providing a bi-directional communication channel between a client and a server.
+
+
+
+> 
+> You can learn your own pace regardless of tutor lessons.
+>
+> Our vlabs allow for design and trial or real world applications.
+>
+>  Not being affraid of making mistakes
+> 
+ 
+
+## VLAB Info
+
+- We have one master and multiple workers.
+- We get initial access to the master and from there we can use the workers.
+- Inside the master we have user access while in our workers we have sudo access whithout password.
+
+![Vlab](images/swarmlab-network.png "")
+
+
+> ### NOTE 
+> 
+>  Vlabs are reset every night around 02:00!
+>
+>> If you would like to keep your work please refer to "publish".
+> 
+> Vlabs dont have firewall restrictions BUT the machines are not exposed to the internet.
+> 
+> You share all machines so please be cooperative and discrete.
+>
+
+
+
+
+
+
+## Quickstart
+
+This is a quickstart guide of howto use this *Lab*
+
+  
+
+### Default Configuration 
+
+#### Working Directory
+
+> /home/ubuntu
+
+#### Default user
+
+> ubuntu
+
+
+#### Publish Your Work
+ 
+
+```bash
+
+ mkdir /home/ubuntu/directory
+ put your files and other directories into /home/ubuntu/directory
+ swarmlab-publish /home/ubuntu/directory
+ open URL in Browser
+
+```
+
+
+
+####  Find lab workers
+
+The host file that contains addresses of connected workers can be created with:
+
+> 
+> swarmlab-getworkers > /home/ubuntu/invhosts
+> 
+
+#### connect to workers 
+
+```bash
+ ssh ubuntu@[IP]
+ Info:  user has sudo privileges without a password
+```
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