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Michael Alan Marsh
testbed
Commits
808e4fa6
Commit
808e4fa6
authored
7 years ago
by
Mike Marsh
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we have a working mesh, still need the star
parent
c19af10d
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start_testbed.py
+58
-2
58 additions, 2 deletions
start_testbed.py
with
58 additions
and
2 deletions
start_testbed.py
+
58
−
2
View file @
808e4fa6
...
...
@@ -37,6 +37,52 @@ def connect_nodes(node1, node2):
ctr1
=
nodelist
[
node1
]
ctr2
=
nodelist
[
node2
]
print
ctr1
,
ctr2
# Create a virtual ethernet link.
dev_1
=
'
bac0_{n1}_{n2}
'
.
format
(
n1
=
node1
,
n2
=
node2
)
dev_2
=
'
bac0_{n2}_{n1}
'
.
format
(
n1
=
node1
,
n2
=
node2
)
subprocess
.
call
([
'
sudo
'
,
'
ip
'
,
'
link
'
,
'
add
'
,
dev_1
,
'
type
'
,
'
veth
'
,
'
peer
'
,
'
name
'
,
dev_2
])
# Add the link endpoints to the container namespaces.
def
add_to_ns
(
dev
,
ns
):
subprocess
.
call
([
'
sudo
'
,
'
ip
'
,
'
link
'
,
'
set
'
,
dev
,
'
netns
'
,
ns
])
add_to_ns
(
dev_1
,
ctr1
[
'
name
'
])
add_to_ns
(
dev_2
,
ctr2
[
'
name
'
])
# Set the IP addresses.
def
set_addr
(
dev
,
ns
,
addr
):
subprocess
.
call
([
'
sudo
'
,
'
ip
'
,
'
netns
'
,
'
exec
'
,
ns
,
'
ip
'
,
'
addr
'
,
'
add
'
,
addr
+
'
/32
'
,
'
dev
'
,
dev
])
set_addr
(
dev_1
,
ctr1
[
'
name
'
],
ctr1
[
'
addr
'
])
set_addr
(
dev_2
,
ctr2
[
'
name
'
],
ctr2
[
'
addr
'
])
# Bring the link up.
def
link_up
(
ns
,
dev
):
subprocess
.
call
([
'
sudo
'
,
'
ip
'
,
'
netns
'
,
'
exec
'
,
ns
,
'
ip
'
,
'
link
'
,
'
set
'
,
dev
,
'
up
'
])
link_up
(
ctr1
[
'
name
'
],
dev_1
)
link_up
(
ctr2
[
'
name
'
],
dev_2
)
# Set initial routes.
def
route_from_to
(
f
,
t
,
fdev
):
# $ctx ip route add $net dev $dev proto static scope global src $addr
subprocess
.
call
([
'
sudo
'
,
'
ip
'
,
'
netns
'
,
'
exec
'
,
f
[
'
name
'
],
'
ip
'
,
'
route
'
,
'
add
'
,
t
[
'
addr
'
]
+
'
/32
'
,
'
dev
'
,
fdev
,
'
proto
'
,
'
static
'
,
'
scope
'
,
'
global
'
,
'
src
'
,
f
[
'
addr
'
]
])
route_from_to
(
ctr1
,
ctr2
,
dev_1
)
route_from_to
(
ctr2
,
ctr1
,
dev_2
)
def
make_mesh
():
global
nodelist
...
...
@@ -51,6 +97,8 @@ def make_star():
def
start_node
(
base_name
,
i
):
global
nodelist
name
=
base_name
+
str
(
i
)
# Start the container.
command
=
[
'
docker
'
,
'
run
'
,
'
-d
'
,
...
...
@@ -60,9 +108,12 @@ def start_node(base_name,i):
]
command
.
extend
(
conf
[
'
image_cmd
'
].
split
())
retval
=
subprocess
.
call
(
command
)
entry
=
dict
()
entry
[
'
name
'
]
=
name
# Determine the IP address to use for this node.
entry
[
'
addr
'
]
=
make_ip
(
i
)
# Find the container's process ID.
entry
[
'
pid
'
]
=
subprocess
.
check_output
([
'
docker
'
,
'
inspect
'
,
...
...
@@ -70,17 +121,22 @@ def start_node(base_name,i):
'
{{.State.Pid}}
'
,
name
]).
strip
()
# Set up a network namespace.
subprocess
.
call
([
'
sudo
'
,
'
ln
'
,
'
-s
'
,
'
/proc/{pid}/ns/net
'
.
format
(
pid
=
entry
[
'
pid
'
],
'
/proc/{pid}/ns/net
'
.
format
(
pid
=
entry
[
'
pid
'
]
)
,
'
/var/run/netns/{name}
'
.
format
(
name
=
name
)
])
])
# Add the node's info to our list.
nodelist
.
append
(
entry
)
for
n
in
range
(
ntwk
[
'
num_nodes
'
]):
start_node
(
ntwk
[
'
name
'
],
n
)
# XXX - need to check if we're a star or mesh network, and call the appropriate function
make_mesh
()
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