def setup():
topo = SingleSwitchTopo(k=4)
net = Mininet(topo=topo, xterms=True)
net.addNAT().configDefault()
net.start() #neccessary for nat to work.
controller = net.get('c0')
#DISCO = controller.cmd('${ETCD_DISCOVERY:-$(curl https://discovery.etcd.io/new?size=3)}')
DISCO = controller.cmd('curl https://discovery.etcd.io/new?size=3')
print("DISCO %s" % DISCO)
nodes = net.keys()
print("nodes are %s" % nodes)
for key in net.__iter__():
if 'h' in key:
node = net.get(key)
result = node.cmd('ifconfig')
node.cmd('export ETCD_DISCOVERY=%s' % DISCO)
print("node.cmd: %s" % node.cmd('echo $ETCD_DISCOVERY'))
print(result)
# h1 = net.get('h1')
# result = h1.cmd('ifconfig')
# print (result)
CLI(net) #opens mn in terminal. Also is a kind of pause
net.stop() #shuts everything down.
def setup():
topo = SingleSwitchTopo(k=15)
net = Mininet(topo=topo, xterms=True)
#net.addNAT().configDefault()
net.start() #neccessary for nat to work.
#------------------------------------------------------
# START LOCAL DISCOVERY
#------------------------------------------------------
controller = net.get('c0')
#DISCO = controller.cmd('${ETCD_DISCOVERY:-$(curl https://discovery.etcd.io/new?size=3)}')
UUID = ((controller.cmd('uuidgen')).strip('\n')).strip('\r')
print("UUID %s" % UUID, )
DISCO = "http://10.0.0.1:2379/v2/keys/discovery/" + UUID
print("DISCO %s" % DISCO, )
with open('etcd.config', 'w') as f:
f.write(DISCO)
h1 = net.get('h1')
setup_res = h1.cmd('./setupDisco.sh')
print("setup_res %s" % setup_res)
time.sleep(1) # need to give etcd cluster time to start.
#------------------------------------------------------
# DEFINE SIZE OF INITIAL CLUSTER
#------------------------------------------------------
if True:
size = 11
cmd = "curl -X PUT " + DISCO + "/_config/size -d value=%s" % size
print("cmd %s" % cmd)
put_res = h1.cmd(cmd)
print("put res %s" % put_res)
result = h1.cmd("curl -X GET " + DISCO + "/_config/size")
print("disco result: %s" % result)
nodes = net.keys()
print("nodes are %s" % nodes)
i = 0
for key in net.__iter__():
if 'h' in key and key != 'h1' and i < size:
node = net.get(key)
print(node.cmd("./etcd-setup.sh "))
i = i + 1
#
#
# # h1 = net.get('h1')
# # result = h1.cmd('ifconfig')
# # print (result)
CLI(net) #opens mn in terminal. Also is a kind of pause
net.stop() #shuts everything down.
