Marathon is a control system that can be used in Docker or in cgroups containers, and is cluster wide. It is a framework for Apache Mesos that helps you manage tasks through RESTful APIs.

Let's go back to the Marathon tab and follow these steps:

1. Add a secret to the marathon file:

$ cd /etc/marathon 

2. Go inside /etc/default and:

$ sudo touch mesos_authentication_secret 
$ sudo vi mesos 

3. Insert marathon1_secret, save the file, and exit using :wq!
4. Inform Marathon about the location of the credential file in the marathon1 tab:

$ sudo mkdir conf 
$ sudo cd conf 
$ sudo touch mesos_authentication_secret_file 
$ ll /etc/default/mesos 
$ ll /etc/default/mesos_authentication_secret 

5. You will get a path, /etc/default/mesos_authentication_secret. Copy this path.
6. Go to the conf directory:

$ cd conf/  
$ sudo vi authentication_secret_file 

7. Paste the path that...