[WebToolsE2E][Aspire][Mac] When we dotnet run Aspire 9.1 project using CLI, there is an error "fail: Aspire.Hosting.Dcp.dcp[0] Could not get process start time"

[Rita003]

REGRESSION INFO: Work in Aspire 9.0.0

INSTALL STEPS

1. Clean machine: Mac OS
2. Install SDK 9.0.102
3. Install latest Aspire 9.1.0-preview.1.25070.5
   • Apply dotnet9 feed

REPRO STEPS

1. Open CMD, create an Aspire project using following commands:

dotnet new aspire -o Aspire1
cd Aspire1/Aspire1.AppHost

2. Dotnet run the project in CMD, and open URL in the browser.
   dotnet run

Note：

1. This issue doesn't repro on Windows

ACTUAL
There is an error in CMD

Error log:

fail: Aspire.Hosting.Dcp.dcp[0]
      Could not get process start time, could not read "/proc": stat /proc: no such file or directory

[davidfowl]

This shows up all of the time now. @danegsta does it make sense to log this?

[karolz-ms]

I saw this the other day and did not get to investigate deeply, but it seemed like the error wasn't coming from DCP code, but from some K8s library that (mistakenly) was assuming existence of Linux /proc pseudo-filesystem when running on a Mac...

[karolz-ms]

Most likely https://github.com/kubernetes/component-base/blob/v0.29.1/metrics/processstarttime.go#L40. Looks harmless except for noise in Aspire logs.

[eerhardt]

FYI - I see this on my macOS as well using the shipping 9.1 bits.

[d0pare]

I wasn't seeing this log on macOS before updating to 9.1.