#SETUP

This is a demonstration/development environment for show-casing OpenDaylight GroupBasedPolicy (GBP) with ServiceFunctionChaining (SFC)

The initial instalation may take some time, with vagrant and docker image downloads.

After the first time it is very quick.

1. Set up Vagrant.

• Edit env.sh for NUM_NODES. (Keep all other vars the same for this version)
• Each VM takes approximately 1G RAM, 2GB used HDD (40GB)
• demo-gbp1: 3 VMs.
• demo-symmetric-chain: 6 VMs.
• demo-asymmetric-chain: 6 VMs.

2. From the directory you cloned into:

source ./env.sh
vagrant up

• This takes quite some time initially.
• If the starting process fail with '/sbin/mount.vboxsf: mounting failed with the error: No such device' line (usually occur after first halt) run 'vagrant plugin install vagrant-vbguest' command on host. It should solve the problem.

3. Start controller.

• Currently it is expected that that controller runs on the host hosting the VMs.
• Tested using groupbasedpolicy stable/lithium. If you are building stable/lithium and you get 'illegal unicode escape' error, you have to rename two yang files in 'groupbasedpolicy\ui-backend\src\main\yang'. These files have to start with a character other than 'u'. E.g. rename 'ui-backend.yang' to 'aui-backend.yang' and 'ui-backend-impl.yang' to 'aui-backend-impl.yang'.
• Start controller by running bin/karaf and install following features in karaf:

 feature:install odl-groupbasedpolicy-ofoverlay odl-groupbasedpolicy-ui odl-restconf

• Run log:tail | grep renderer and wait until the following message appears in the log:

INFO - OFOverlayRenderer - org.opendaylight.groupbasedpolicy.ofoverlay-renderer - Initialized OFOverlay renderer

• Now you can ^C the log:tail if you wish

#Demos:

• demo-gbp1:
  • 8 docker containers in 2 x EPGs (web, client)
  • contract with ICMP and HTTP
• demo-symmetry:
  • 2 docker containers in 2 x EPGs (web, client)
  • contract with ICMP (ALLOW) and HTTP (CHAIN, where Client request is chained, Web reverse path is reverse path of chain)
• demo-asymmetry:
  • 2 docker containers in 2 x EPGs (web, client)
  • contract with ICMP (ALLOW) and HTTP (CHAIN, where Client request is chained, Web reverse path is ALLOW)

##demo-gbp1

###Setup

VMs:

• gbpsfc1: gbp
• gbpsfc2: gbp
• gbpsfc3: gbp

Containers:

• h35_{x} are in EPG:client
• h36_{x} are in EPG:web

To run, from host folder where Vagrantfile located do:

./startdemo.sh demo-gbp1

After this, infrastructure_config.py will be copied from /demo-gbp1, and you are ready to start testing.

###To test:

SSH to test VM (may take some seconds):

vagrant ssh gbpsfc1

Get root rights:

sudo -E bash

Check docker containers running on your VM:

docker ps

Notice there are containers from two different endpoint groups, "h35" and "h36". Enter into the shell on one of "h36" (web) container (on gbpsfc1 it will be h36_4, its IP is 10.0.36.4, you will need it later). (You need double ENTER after docker attach)

docker attach h36_4

Start a HTTP server:

python -m SimpleHTTPServer 80

Press Ctrl-P-Q to return to your root shell on gbpsfc1

Enter into one of "h35" (client) container, ping the container where HTTP server runs, and connect to index page:

We use eternal loop here to imitate web activity. After finishing your test, you might want to stop the loop with Ctrl-C

docker attach h35_{x}
ping 10.0.36.4
while true; do curl 10.0.36.4; done

You may ping and curl to the web-server from any test VM.

Ctrl-P-Q to leave back to root shell on VM.

Now watch the packets flow:

ovs-dpctl dump-flows

Leave to main shell:

exit #leave root shell
exit #close ssh session

Repeat vagrant ssh etc. for each of gbpsfc2, gbpsfc3.

###After testing

When finished from host folder where Vagrantfile located do:

./cleandemo.sh

If you like vagrant destroy will remove all VMs.

##demo-symmetric-chain / demo-asymmetric-chain

VMs:

• gbpsfc1: gbp (client initiates transactions from here)
• gbpsfc2: sff
• gbpsfc3: "sf"
• gbpsfc4: sff
• gbpsfc5: "sf"
• gbpsfc6: gbp (run a server here)

Containers:

• h35_2 is in EPG:client on gbpsfc1
• h36_4 is in EPG:web on gbpsfc6

To run, from host folder where Vagrantfile located do:

./startdemo.sh demo-symmetric-chain | demo-asymmetric-chain

To test by sending traffic:

Start a test HTTP server on h36_4 in VM 6.

(don't) forget double ENTER after docker attach

vagrant ssh gbpsfc6
sudo -E docker ps
sudo -E docker attach h36_4
python -m SimpleHTTPServer 80

Ctrl-P-Q to detach from docker without stopping the SimpleHTTPServer, and logoff gbpsfc6.

Now start client traffic, either ping or make HTTP requests to the server on h36_4.

vagrant ssh gbpsfc1
sudo -E docker ps
sudo -E docker attach h35_2
ping 10.0.36.4
curl 10.0.36.4
while true; do curl 10.0.36.4; sleep 1; done

Ctrl-P-Q to detach from docker, leaving the client making HTTP requests, and logoff gbpsfc1.

Look around: use "vagrant ssh" to the various machines

• take packet captures on eth1.
• sudo ovs-dpctl dump-flows`

When finished from host folder where Vagrantfile located do:

./cleandemo.sh

If you like vagrant destroy will remove all VMs

##Preparing to run another demo

1. In the vagrant directory, run cleandemo.sh
2. stop controller (logout of karaf)
3. Remove journal and snapshot directories from controller directory.
4. Restart the controller, install features, wait, as above.