I just installed a fresh Cent 7.3 box, nothing special... just the server package (not minimal).  I just installed the mdm rpm from the 2.0.1.2 files, and it works just fine. I can run scli commands and see that it is running in "ps -ef" output as well as "service mdm status".  We also have a lot of customers running RHEL/Cent 7.2 in their environments just fine. My guess is there is something different about the images being used here. Maybe something not installed that needs to be there, but at this point, I'm only guessing. Can you build your own OS rather than relying on a pre-built image? That might be the better way to go at this point.  Good luck!
Hi,  I am trying to troubleshoot a failed mdm service.  I have a fresh set of CentOS 7 systems with pre-reqs installed.  On all 3 (whether I use installation manager or cli for install), all mdm service states go to failed.  Not sure best way to debug.  Service output follows:  [vagrant[NAME]-lnx1 ~]$ service mdm status Redirecting to /bin/systemctl status  mdm.service ● mdm.service - scaleio mdm    Loaded: loaded (/usr/lib/systemd/system/mdm.service; enabled; vendor preset: disabled)    Active: failed (Result: start-limit) since Mon 2017-02-06 20:08:19 UTC; 17min ago  Main PID: 12398 (code=exited, status=254)   Feb 06 20:08:19 sds-lnx1 systemd[1]: mdm.service: main process exited, code=exited, status=254/n/a Feb 06 20:08:19 sds-lnx1 systemd[1]: Unit mdm.service entered failed state. Feb 06 20:08:19 sds-lnx1 systemd[1]: mdm.service failed. Feb 06 20:08:19 sds-lnx1 systemd[1]: mdm.service has no holdoff time, scheduling restart. Feb 06 20:08:19 sds-lnx1 systemd[1]: start request repeated too quickly for mdm.service Feb 06 20:08:19 sds-lnx1 systemd[1]: Failed to start scaleio mdm. Feb 06 20:08:19 sds-lnx1 systemd[1]: Unit mdm.service entered failed state. Feb 06 20:08:19 sds-lnx1 systemd[1]: mdm.service failed.
ScaleIO 2.x MDM service failed to start on Linux (CentOS 7)