Undefined Description of problem:
Invalid combination of flags causes confusing error messages
Version-Release number of selected component (if applicable):
4.21.0-202601130153.p2.g90ed49c.assembly.stream.el9-90ed49c
How reproducible:
100%
Steps to Reproduce:
1.Follow the m2d process to pull images
2.Attempt to follow the d2m process with the following command
oc-mirror --v2 -c isc.yaml --log-level=debug --authfile=auth.json --cache-dir=/data/working/cache2 --from file:///data/working/mirror2 docker://myregistry.com:8443/ocp
3.oc-mirror errors out
Actual results:
Error:2026/02/17 13:45::16 [ERROR] : [Executor] collection error: http request Get "https://mirror.openshift.com/pub/openshift-v4/signatures/openshift/release/sha256=xxxxxxxxxxxxxxxxxxxxx/signature-1": dial tcp: lookup mirror.openshift.com on 10.10.10.68:53: no such host
Expected results:
oc-mirror could recognize that this combination of flags is invalid
Additional info:
The customer was unfamiliar with the oc mirror process. They moved over the entire working-dir to their offline environment instead of just copying the tarball files.
Since oc-mirror supports m2d, d2m, and m2m, I'm not 100% if we can detect that this is an invalid set of CLI flags or if oc-mirror would set the cache dir arg with the other args and exit saying this combination is arbitrary or invalid.