This is a useful little tool that will generate a nice graphviz graph illustrating your reverse proxy flow. It takes a manually curated YAML file describing the topology of your network, proxy definitions, and optionally a collection of nmap output files for additional port/service information and output a graph in any format supported by graphviz.
When run with --help:
usage: rev-proxy-grapher.py [-h] --topology TOPOLOGY [--resolve-dns]
[--nmap-xml NMAP_XML [NMAP_XML ...]]
[--limit-ext LIMIT_EXT [LIMIT_EXT ...]]
[--font FONT] [--fontsize FONTSIZE]
[--ranksep RANKSEP] [--out OUT] [--verbose]
Draw a nice graph of your external to internal proxies
optional arguments:
-h, --help show this help message and exit
--topology TOPOLOGY File describing the proxies and the topology of your
networks (default: topology.yaml)
--resolve-dns Attempt to resolve DNS for all IPs (default: False)
--nmap-xml NMAP_XML [NMAP_XML ...]
Get additional node details from these nmap XML scan
files (default: ())
--limit-ext LIMIT_EXT [LIMIT_EXT ...]
Only include these source IPs or networks (default:
())
--font FONT Font to use in the graph (default: droid sans,dejavu
sans,helvetica)
--fontsize FONTSIZE Font size to use in the graph (default: 11)
--ranksep RANKSEP Node separation between columns (default: 1)
--out OUT Write graph into this file, guessing the output format
by extension (default: graph.png)
--verbose Be more verbose (default: False)
- python3-pydotplus
- python3-PyYAML
- python3-netaddr
See output of --help, and examples in the examples directory. To generate an example graph of your own, simply run:
rev-proxy-grapher.py --topology examples/topology.yaml
This will generate graph.png if everything worked well.
If you want to see what is added by running nmap:
rev-proxy-grapher.py \
--topology examples/topology.yaml \
--nmap-xml examples/nmap-external.xml \
--out graph-with-nmap.svg
Currently, this only supports one level of proxying. For example you cannot define a haproxy->nginx->lb-cluster relationship, but this will hopefully be coming in the future, as we have a need to get that properly represented anyway.
- Konstantin Ryabitsev <konstantin@linuxfoundation.org>