Universal Control Plane 3.0 support dump contains no networking information

Issue

Some Universal Control Plane (UCP) versions do not capture swarm networking information with support dump instead producing the following error in each host's dsinfo.txt file:

/network-support.sh: line 1: 404:: command not found

Prerequisites

This issue is expected on the following versions of UCP:

• Universal Control Plane 2.2.x versions 2.2.11, 2.2.12, 2.2.13, 2.2.14
• Universal Control Plane 3.0.x versions 3.0.2, 3.0.3, 3.0.4, 3.0.5

Root Cause

An error in the build system for the docker/ucp-dsinfo image prevented the installation of the /network-support.sh script in the image. This issue was tracked by internal engineering issue id escalation/733.

Resolution

Support dump will collect networking information if you tag an earlier or later version of the docker/ucp-dsinfo image as the currently running UCP version. The following must be performed through a UCP client bundle.

1. Set a shell variable to the currently running UCP version:

   UCP_VERSION=$(docker version --format '{{index (split .Server.Version "/") 1}}')
   

2. Attempt to an unaffected version such as docker/ucp-disinfo:3.0.6 to all nodes, then tag it to the currently running version:

   docker pull docker/ucp-dsinfo:3.0.6
   docker tag docker/ucp-dsinfo:3.0.6 docker/ucp-dsinfo:${UCP_VERSION}
   

   For UCP 2.2.x, pull and tag docker/ucp-dsinfo:2.2.21 instead:

   docker pull docker/ucp-dsinfo:2.2.21
   docker tag docker/ucp-dsinfo:2.2.21 docker/ucp-dsinfo:${UCP_VERSION}
   

3. Collect a support dump as usual.

What's Next

• Get Support at docs.docker.com.