# Linux Operating System

## Instance of Ubuntu with Linux-based tools 

*A vlab enviroment ready for learning*


This is designed to help you with:

- Linux Networking 
- Essentials of Linux System Administration
- Learn to orchestrate a lot of linux machines with ansible
- Build network on top of OS
- Advanced system programming

> 
> 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
```


#### connect to workers with ansible

```bash
cd /home/ubuntu/project/examples-os2/ansible
   make ps
```
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**MORE INFO** 

See http://docs.swarmlab.io/SwarmLab-HowTos/labs/os2/index.adoc.html
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