Description of problem: Undercloud installtion failed on docker installation because the current images and repos have a dependency version mismatch. 2017-06-27 13:40:39,057 INFO: ESC[mNotice: /Stage[main]/Main/User[docker_user]/groups: groups changed '' to ['docker']ESC[0m 2017-06-27 13:40:41,015 INFO: ESC[1;31mError: Execution of '/bin/yum -d 0 -e 0 -y install docker' returned 1: Error: Package: 7:device-mapper-event-1.02.140-6.el7.x86_64 (rhelosp-rhel-7.4-server) 2017-06-27 13:40:41,015 INFO: Requires: device-mapper = 7:1.02.140-6.el7 2017-06-27 13:40:41,015 INFO: Installed: 7:device-mapper-1.02.140-7.el7.x86_64 (installed) 2017-06-27 13:40:41,015 INFO: device-mapper = 7:1.02.140-7.el7 2017-06-27 13:40:41,015 INFO: Available: 7:device-mapper-1.02.140-6.el7.x86_64 (rhelosp-rhel-7.4-server) 2017-06-27 13:40:41,015 INFO: device-mapper = 7:1.02.140-6.el7
Your rhel-guest-image is too new. There is a mismatch between the image and yum repository configured by rhos-release. You need -176 or older.