Debug Logging for API Requests to Docker Daemon

[cnuss]

Feature Request

Can we extend --log-level=debug and --log-level=trace so that they do API Request logging to the underlying docker system?

Purpose

This is so we can inspect the interaction that cri-dockerd and kubelet might be making to the underlying Docker Daemon for greater debug-ability.

Debug Mode (--log-level=debug)

Return basic details about the API calls (Method, URL, Status Response)

./cri-dockerd --log-level debug

Would return basic API call introspection into Docker Socket/API calls:

time="2026-01-08T11:35:17Z" level=trace msg="(dockerapi) GET unix:///var/run/docker.sock/v1.46/version => 200 OK"

Trace Mode (--log-level=trace)

Return more verbose details about the API calls (Method, URL, Request Body, Response Body)

Would return basic API call introspection into Docker Socket/API calls:

time="2026-01-08T11:35:17Z" level=trace msg="(dockerapi) GET unix:///var/run/docker.sock/v1.46/version: (empty) => 200 OK {\"Platform\":{\"Name\":\"Docker Desktop 4.55.0 (213807)\"},\"Components\":[{\"Name\":\"Engine\",\"Version\":\"29.1.3\",\"Details\":{\"ApiVersion\":\"1.52\",\"Arch\":\"arm64\",\"BuildTime\":\"2025-12-12T14:50:40.000000000+00:00\",\"Experimental\":\"false\",\"GitCommit\":\"fbf3ed2\",\"GoVersion\":\"go1.25.5\",\"KernelVersion\":\"6.12.54-linuxkit\",\"MinAPIVersion\":\"1.44\",\"Os\":\"linux\"}},{\"Name\":\"containerd\",\"Version\":\"v2.2.0\",\"Details\":{\"GitCommit\":\"1c4457e00facac03ce1d75f7b6777a7a851e5c41\"}},{\"Name\":\"runc\",\"Version\":\"1.3.4\",\"Details\":{\"GitCommit\":\"v1.3.4-0-gd6d73eb8\"}},{\"Name\":\"docker-init\",\"Version\":\"0.19.0\",\"Details\":{\"GitCommit\":\"de40ad0\"}}],\"Version\":\"29.1.3\",\"ApiVersion\":\"1.52\",\"MinAPIVersion\":\"1.44\",\"GitCommit\":\"fbf3ed2\",\"GoVersion\":\"go1.25.5\",\"Os\":\"linux\",\"Arch\":\"arm64\",\"KernelVersion\":\"6.12.54-linuxkit\",\"BuildTime\":\"2025-12-12T14:50:40.000000000+00:00\"}\n"