custom_ctnnet_topology.py

#!/usr/bin/python

## Example topology for containernet
## Created by Jorge Lopez & Jose Reyes 

"""
This is a simple example of a Containernet custom topology.
"""
from mininet.net import Containernet
from mininet.node import Controller, RemoteController
from mininet.cli import CLI
from mininet.link import TCLink
from mininet.log import info, setLogLevel
import sys
import socket

setLogLevel('info')

net = Containernet()
info('*** Adding controller\n')
c0 = RemoteController( 'c0' , ip=socket.gethostbyname("onos"), port=6633)
net.addController(c0)
info('*** Adding docker containers\n')
h1 = net.addDocker('h1', ip='10.0.0.251', mac='9a:d8:73:d8:90:6a', dimage="mymysql:latest", environment={"MYSQL_DATABASE": "exampledb", "MYSQL_USER": "exampleuser", "MYSQL_PASSWORD": "examplepass", "MYSQL_RANDOM_ROOT_PASSWORD": "1" })
h2 = net.addDocker('h2', ip='10.0.0.252', mac='9a:d8:73:d8:90:6b', dimage="mywordpress:latest", ports=[8080], port_bindings={80:8080}, environment={"WORDPRESS_DB_HOST": "10.0.0.251", "WORDPRESS_DB_USER": "exampleuser", "WORDPRESS_DB_PASSWORD": "examplepass", "WORDPRESS_DB_NAME": "exampledb"})
h3 = net.addDocker('h3', ip='10.0.0.253', mac='9a:d8:73:d8:90:6c', dimage="lab-api:latest", ports=[8888], port_bindings={5000:8888})
h4 = net.addDocker('h4', ip='10.0.0.254', mac='9a:d8:73:d8:90:6d', dimage="lab-web:latest", ports=[8081], port_bindings={80:8081})
info('*** Adding switches\n')
s1 = net.addSwitch('s1')
s2 = net.addSwitch('s2')
s3 = net.addSwitch('s3')
s4 = net.addSwitch('s4')
info('*** Creating links\n')
net.addLink( h1, s1, 1, 1 )
net.addLink( h2, s2, 1, 1 )
net.addLink( h3, s3, 1, 1 )
net.addLink( h4, s4, 1, 1 )
net.addLink( s1, s2, 2, 2 )
net.addLink( s1, s3, 3, 2 )
net.addLink( s2, s3, 3, 3 )
net.addLink( s2, s4, 4, 2 )
net.addLink( s3, s4, 4, 3 )
info('*** Starting network\n')
net.start()
h1.cmd("/entrypoint.sh mysqld &")
h2.cmd("/usr/local/bin/docker-entrypoint.sh apache2-foreground &")
h3.cmd("ifconfig h3-eth1 10.0.0.253")
h3.cmd("python3 /usr/src/app/app.py &")
h4.cmd("service nginx start& ")
info('*** Running CLI\n')
CLI(net)
net.stop()