Generate a list of docker nodes that are in the swarm, and the services running inside each of them.

docker_topography.py

import subprocess
import json

# Get a list of all nodes in the Docker swarm
result = subprocess.run(["docker", "node", "ls", "--format", "{{json .}}"], stdout=subprocess.PIPE, text=True)
nodes = json.loads("[" + result.stdout.strip().replace("}\n{", "},\n{") + "]")

# Iterate over the nodes and print their hostname and IP address
for node in nodes:
    print("Node:", node['Hostname'])
    print("\tHostname:", node['Hostname'])
    print("\tIP address:", node['Status']['Addr'])
    print("\tServices:")

    # Get a list of services running on this node
    result = subprocess.run(["docker", "service", "ls", "--filter", "node={}".format(node['Hostname']), "--format", "{{json .}}"], stdout=subprocess.PIPE, text=True)
    services = json.loads("[" + result.stdout.strip().replace("}\n{", "},\n{") + "]")

    # Iterate over the services and print their names
    for service in services:
        print("\t\t-", service['Name'].strip("/").split("_")[-1])