108 lines
3.2 KiB
Python
Executable file
108 lines
3.2 KiB
Python
Executable file
#!/usr/bin/python3
|
|
import os
|
|
import json
|
|
import argparse
|
|
import random
|
|
from docker import Client
|
|
from graphviz import Graph
|
|
|
|
# colorlover.scales["12"]["qual"]["Paired"] converted to hex strings
|
|
COLORS = ['#1f78b4', '#33a02c', '#e31a1c', '#ff7f00', '#6a3d9a', '#b15928', '#a6cee3', '#b2df8a', '#fdbf6f',
|
|
'#cab2d6', '#ffff99']
|
|
i = 0
|
|
|
|
|
|
def get_unique_color():
|
|
global i
|
|
|
|
if i < len(COLORS):
|
|
c = COLORS[i]
|
|
i += 1
|
|
else:
|
|
c = "#%06x".format(random.randint(0, 0xFFFFFF))
|
|
return c
|
|
|
|
|
|
def generate_graph(verbose: bool, file: str):
|
|
g = Graph(comment='Docker Network Graph', engine="sfdp", format='png',
|
|
graph_attr=dict(splines="true"))
|
|
|
|
docker_client = Client(os.environ.get("DOCKER_HOST", "unix:///var/run/docker.sock"))
|
|
|
|
def dump_json(obj):
|
|
print(json.dumps(obj, indent=4))
|
|
|
|
for c in docker_client.containers():
|
|
name = c['Names'][0][1:]
|
|
container_id = c['Id']
|
|
|
|
node_id = 'container_%s' % container_id
|
|
|
|
iface_labels = []
|
|
|
|
for net_name, net_info in c['NetworkSettings']['Networks'].items():
|
|
label_iface = "<%s> %s" % (net_info['EndpointID'], net_info['IPAddress'])
|
|
|
|
iface_labels.append(label_iface)
|
|
|
|
if verbose:
|
|
print('|'.join(iface_labels))
|
|
|
|
g.node(node_id,
|
|
shape='record',
|
|
label="{ %s | { %s } }" % (name, '|'.join(iface_labels)),
|
|
fillcolor='#ff9999',
|
|
style='filled'
|
|
)
|
|
|
|
for net in sorted(docker_client.networks(), key=lambda k: k["Name"]):
|
|
net_name = net['Name']
|
|
color = get_unique_color()
|
|
|
|
try:
|
|
gateway = net['IPAM']['Config'][0]['Gateway']
|
|
except IndexError:
|
|
gateway = None
|
|
|
|
try:
|
|
subnet = net['IPAM']['Config'][0]['Subnet']
|
|
except IndexError:
|
|
subnet = None
|
|
|
|
if verbose:
|
|
print("Network: %s %s gw:%s" % (net_name, subnet, gateway))
|
|
|
|
net_node_id = "net_%s" % (net_name,)
|
|
|
|
net_label_html = '<br/>'.join([s for s in ['<font color="#777777"><i>network</i></font>', net_name, subnet, gateway] if s is not None])
|
|
|
|
g.node(net_node_id,
|
|
shape='record',
|
|
label="{<gw_iface> %s| %s }" % (gateway, net_name),
|
|
fillcolor=color,
|
|
style='filled')
|
|
|
|
for container_id, container in sorted(net['Containers'].items()):
|
|
if verbose:
|
|
dump_json(container)
|
|
if verbose:
|
|
print(" * ", container['Name'], container['IPv4Address'], container['IPv6Address'])
|
|
|
|
container_node_id = 'container_%s' % container_id
|
|
|
|
container_iface_ref = "%s:%s" % (container_node_id, container['EndpointID'])
|
|
|
|
g.edge(container_iface_ref, net_node_id+":gw_iface", color=color)
|
|
|
|
print(g.source)
|
|
if file:
|
|
g.render(file)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
parser = argparse.ArgumentParser(description="Generate docker network graph.")
|
|
parser.add_argument("-v", "--verbose", help="Verbose output", action="store_true")
|
|
parser.add_argument("-o", "--out", help="Write output to file", type=str)
|
|
args = parser.parse_args()
|
|
|
|
generate_graph(args.verbose, args.out)
|