Agent-Based Installer succeeds in connected environments but fails in disconnected environments

Issue

• The installation fails when using the Agent-Based Installer in a disconnected environment.

• The command openshift-install agent wait-for install-complete returns the following error:

  INFO Unable to retrieve cluster metadata from Agent Rest API: no clusterID known for the cluster
  

• The journal logs show the following error messages:

  Mar 10 11:39:14 master0 agent-register-cluster[8804]: time="2025-03-10T11:39:14Z" level=warning msg="command 'oc adm release info -o template --template '{{.metadata.version}}' --insecure=true --icsp-file=/tmp/icsp-file1210812486 mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5 --registry-config=/tmp/registry-config782683582' exited with non-zero exit code 1: \nFlag --icsp-file has been deprecated, support for it will be removed in a future release. Use --idms-file instead.\nerror: image \"mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5\" not found: manifest unknown: manifest unknown\n"
  Mar 10 11:39:14 master0 agent-register-cluster[8804]: time="2025-03-10T11:39:14Z" level=error msg="failed to get image openshift version from mirror release image mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5" error="command 'oc adm release info -o template --template '{{.metadata.version}}' --insecure=true --icsp-file=/tmp/icsp-file1210812486 mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5 --registry-config=/tmp/registry-config782683582' exited with non-zero exit code 1: \nFlag --icsp-file has been deprecated, support for it will be removed in a future release. Use --idms-file instead.\nerror: image \"mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5\" not found: manifest unknown: manifest unknown\n"
  Mar 10 11:39:14 master0 agent-register-cluster[8804]: time="2025-03-10T11:39:14Z" level=fatal msg="Failed to register cluster with assisted-service: command 'oc adm release info -o template --template '{{.metadata.version}}' --insecure=true --icsp-file=/tmp/icsp-file1210812486 mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5 --registry-config=/tmp/registry-config782683582' exited with non-zero exit code 1: \nFlag --icsp-file has been deprecated, support for it will be removed in a future release. Use --idms-file instead.\nerror: image \"mirror.example.com:8443/openshift/release-images@sha256:5b71d2917773c2fddcd0415fbc96457188df2ba87d71680330aa4cb96f4501b5\" not found: manifest unknown: manifest unknown\n"
  

• The required configuration values for disconnected installation, such as pullSecret, additionalTrustBundle, and imageDigestSources, are correctly set in install-config.yaml.

• The installation succeeds when these settings are removed and a connected environment is used.