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bug: agentcontainers log spam if Docker is unavailable #18709

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@spikecurtis

Description

@spikecurtis

Is there an existing issue for this?

  • I have searched the existing issues

Current Behavior

The following log is dropped at error level, over and over by the Agent if there is no Docker running.

Relevant Log Output

2025-07-02 06:03:56.330 [erro]  containers: updater loop ticker failed ...
    error= list containers failed:
               github.com/coder/coder/v2/agent/agentcontainers.(*API).updateContainers
                   /home/coder/repos/coder/agent/agentcontainers/api.go:571
             - run docker ps: exit status 1: "Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?":
               github.com/coder/coder/v2/agent/agentcontainers.(*dockerCLI).List
                   /home/coder/repos/coder/agent/agentcontainers/containers_dockercli.go:255
             - exit status 1

Expected Behavior

Not logged so frequently, and/or at debug rather than error.

Steps to Reproduce

Start a workspace without Docker running in it and look at agent logs

Environment

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