Symptoms

Affected Cyber Recovery versions: 19.15Impacted Configuration and Settings: hostname changes if there is an underscore. Impact on CR/CS: Customer might see issues with docker services not coming up after applying the OS patch or upgrading to SLES 15.Symptoms found in the logs: [2024-11-15 15:15:39.086] [INFO] [cradmin] [crlogging.go:180 SetLevel()] : Setting LogLevel to 3 [2024-11-15 15:15:39.086] [INFO] [cradmin] [cradmin.go:107 main()] : ===================== [2024-11-15 15:15:39.086] [INFO] [cradmin] [cradmin.go:108 main()] : cradmin started: version=19.16.0.2-10 [2024-11-15 15:15:39.086] [DEBUG] [cradmin] [cradmin.go:110 main()] : Entering [2024-11-15 15:15:39.086] [INFO] [cradmin] [cradmin.go:145 main()] : /opt/dellemc/cr/bin/cradmin genCert --filename /opt/dellemc/cr/etc/certs/ssl/CRSERVICE [2024-11-15 15:15:39.086] [DEBUG] [cradmin] [cradmin.go:888 genCert()] : Entering [2024-11-15 15:15:39.086] [DEBUG] [cradmin] [cradmin.go:818 getCertInfoCert()] : Entering [2024-11-15 15:15:39.086] [DEBUG] [cradmin] [ddssh.go:840 RunExecCmd()] : Entering [2024-11-15 15:15:39.088] [DEBUG] [cradmin] [ddssh.go:850 RunExecCmd()] : Exiting [2024-11-15 15:15:39.088] [DEBUG] [cradmin] [libcli.go:157 ShowCliError()] : Entering [2024-11-15 15:15:39.088] [ERROR] [cradmin] [libcli.go:160 ShowCliError()] : Failed to get CR FQDN:exit status 1 stderr: hostname: Temporary failure in name resolution

Cause

Upgrade to SLES 15 might automatically adjust or remove the underscore from the hostname, probably because underscores in hostnames are not strictly compliant with hostname standards. The standard is that hostnames should only contain letters, numbers, and hyphens.

Resolution

Make the necessary changes (like adding a hostname without an underscore) in the /etc/hosts file and save. Then rerun securereset.

Support Cases