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imgtrack: ERROR: image not supported: ldd not found what does this error mean and resolution


I am using imgtrack . for few images when i run imagetrack i am getting the below error

imgtrack: ERROR: image not supported: ldd not found

what does this mean?


(3) Replies
By Community Manager Community Manager
Community Manager

This error suggests that ldd is not available in your image. You may need to use the "--libc-variant" command line option in this situation.

The "imgtrack --help" output gives some information about this. In particular:

$ ./imgtrack --help
  --libc-variant NAME            assume the given libc variant (glibc muslc) instead of checking
In order to determine the correct binary to extract imgtrack needs to
determine what libc implementation the image provides -- GNU libc (glibc) or
musl libc (muslc). The latter is commonly found in images based on Alpine
Linux. It determines what libc is available by running a container of the
source image with the image entrypoint changed to invoke the 'ldd' binary.
If imgtrack is unable to run the container, there is an error running ldd, or
the image does not provide ldd, imgtrack will abort with an error and report
that the image is not supported.
GNU's glibc is the standard C library and runtime framework for Linux, but
some alternative implementations have recently emerged. In particular, the
musl project has become popular due to its inclusion in Alpine Linux, its
small size, and its good fit for containers. imgtrack will inspect the source
image to determine which C library the image provides, running the ldd
command within a container based on the image. If the ldd command cannot be
found in the image or it reports an unknown implementation, imgtrack will
consider the image unsupported and will exit with an error. You can avoid the
test and provide imgtrack with the correct implementation to use with the
--libc-variant flag.
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Hi Chris,
Thanks this worked.
Post reconciliation how this would be visible in flexera UI
will this be under 
discovery&inventory >All inventory 

Container inventory > All containers

Also, what will be the display name any dummy data that can help me understand


This seems to be a duplicate of Imgtrack post deployment and ndi file generation data visibility in UI  that I just responded to.