lab3.md

Lab 3: Scaling Docker with Mesos

Prerequisite

Working DC/OS Cluster
	AWS
	Mini-Mesos

Intro material gives a brief overview.

Deploying to Mesos

In the mesos directory there are a number of files for deploying docker instances to a running cluster. Details of setting up a cluster are either automated by the mesosphere cloud provisioner, or is in the readme.html of the USB drive.

1. cd mesos

2. Determine your Master IP and change the launch.sh to use that IP and remove the first ECHO and the first exit 1;

   #!/bin/bash
   
   echo "** You need to replace the <master ip> with the IP address of the cluster master and delete this and the next line **"
   exit 1;
   
   if [ "$#" -ne 1 ]; then
   	echo "script takes json file as an argument"
   exit 1;
   fi
   
   curl -X POST -H "Content-Type: application/json" <master ip>:8080/v2/apps -d@"$@"
   

3. launch the tomcat-bridge.json

   ./launch.sh tomcat-bridge.json
   

4. review the marathon for deployment: `http://<master_ip>:8080/

5. scale the application to 3 in the web ui

6. view the haproxy configuration. ssh into the master.

   cat /var/log
   
   
   
   

FINISHED