m17hr1l b51a88d502 stage-26b: Docker topology in /admin — read-only socket-proxy + graph ...

New tecnativa/docker-socket-proxy sidecar exposes only GET on
containers/networks/info/ping; POST and DELETE are blocked. The cockpit
queries it over the backend network — /var/run/docker.sock is never
mounted into a web-facing container.

cockpit/docker_view.py normalizes the daemon view: containers carry
per-network IP/MAC + published_ports; networks carry subnet/gateway from
IPAM; host_info pulls /info (degrades gracefully). topology() returns
the combined snapshot.

/admin/docker (admin-gated): a force-directed graph (pure SVG +
vanilla JS, ~280 lines) renders the complete setup — a host node,
switch nodes with subnet labels colored by driver, container nodes
colored by state, member wires labeled with the container's IP on that
network, uplinks from non-internal switches to the host labeled with
the gateway, and dashed publish-edges from containers to the host for
their published ports. Drag to rearrange, scroll to zoom, re-settle
kicks the physics. Below the graph: containers table + grouped network
cards as a textual mirror. 12 docker_view tests; verified live (32
containers, 11 switches, real subnets + gateways).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-23 03:08:39 +02:00

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