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Application-Aware Demo Set-up

This repository contains everything for the physical and virtual demonstration set-up.

QUICKSTART (Vagrant)

Provision Machines

First start the management host and the switch:

vagrant up mgnt switch

Initiate the first provision step of the PCs by calling up:

vagrant up pc1 pc5

Once the first provision step is finished, reload the VMs (only required after the very first provision):

vagrant reload pc1 pc5

Check the daemons

Enter the PC1:

vagrant ssh pc1

You can check the output of a daemon with screen -r (sudo is important):

sudo screen -r pc1_host1

You can disconnect from screen by Ctrl + a and then Ctrl + b.

Check the Demo GUI:

Check if Grafana is reachable at http://10.0.8.0:3000/.

User and password: admin/admin

Check connectivity and Grafana statistics:

Login to PC1 and run iperf as server:

vagrant ssh pc1
sudo apt-get install iperf
iperf -s

Login to PC5 and run iperf as client:

vagrant ssh pc5
sudo apt-get install iperf
iperf -c 192.168.1.0

In Grafana, you should see an increase for Sent Datarate eth2 under Switch Stats.

Execute the clients

Enter the management PC and execute the daemon:

vagrant ssh mgnt
cd /vagrant
./control/DemoController/DemoController.py -c configs/simple_config.json

Components

Component Description
DemoDaemon Starts applications and monitoring on physical hosts and all network namespaces
DemoController Instructs the daemons to start the applications and distributes the configuration.

DemoDaemon

Tasks:

  • Starts / stops the application when instructed so
  • Applies pacing when instructed so
  • Handles the monitoring

DemoController

The DemoController takes a configuration file and distributes it over redis.

Required Steps

Step 1: Create namespaces and start the demo-daemons

  • Use netns/create_netns.sh to create the network namespaces.
  • Use netns/start_daemons to start a demo daemon in every namespace.

Step 2: Use the DemoController to execute a configuration file

Example:

./control/DemoController/DemoController.py -c configs/demo.json

Start Daemons manually:

For host0:

cd /vagrant && sudo -H -u vagrant python3 -m control.DemoDaemon.Daemon --id pc1_host0 --working-dir /home/vagrant --redis 10.0.8.0

For host1:

sudo ip netns exec host1 bash -c 'cd /vagrant && python3 -m control.DemoDaemon.Daemon --id pc1_host1 --working-dir /home/vagrant --redis 10.0.8.0'