Ryu Controller

Overview

This is an appliance that deploys a standalone Ryu OpenFlow controller using the simple_switch_13 application modified for the Corsa DP2000 series switches on Chameleon. More information can be found in the BYOC documentation [TODO: insert link to documentation when it is available]. The modified Ryu controller code can be found hers https://github.com/ChameleonCloud/ryu.git.

Steps

1. Open the Heat template from the following url: https://www.chameleoncloud.org/appliances/api/appliances/54/template

2. Set the parameters to the template:

   Controller Node Network: The name of the existing network used to connect the controller to the Internet (default: sharednet1)

   OpenFlow Controller Port: The network port used by the controller software (default: 6653)

   Example:

    Controller Node Network = sharednet1
    OpenFlow Controller Port = 6653
   

3. Launch the stack.

4. Configure your OpenFlow switch to use the controller IP:Port. For more information about creating an OpenFlow network on Chameleon see the BYOC documentation or the OpenFlow Quick Start Appliance

Explore the OpenFlow controller

1. Use ssh to login to the controller node.

2. Open/tail the Ryu log file that resides in docker volume

   [root@controller ~]# tail -F /var/lib/docker/volumes/var_log_ryu/_data/ryu-manager.log
   

3. Become root and view/edit the Ryu controller application code:

   [cc@controller ~]$ sudo su -
   Last login: Wed Jun 13 18:50:00 UTC 2018 on pts/0
   [root@controller ~]# vim /opt/ryu/simple_switch_13_custom_chameleon.py
   

4. After editing the Ryu application controller application, restart Ryu to deploy any changes to the OpenFlow network

   [root@controller ~]# systemctl restart ryu