ScaleIO unable to start MDM service

Hi All,

I’m fairly new to ScaleIO as well as Linux so many commands will be new to me.

I’m currently running a 3 node setup each with a 100GB iSCSI drive attached through vmware workstation.

Each of the 3 nodes are running CentOS 7 and have the relevant yum packages installed (numactl mutt bash-completion java)

IPs are 192.168.68.201 (Master), 202(Slave), 203(Split Brain).

I’m running the Gateway on a separate node (CentOS 7).

After installing the services through the web gateway (Which doesn’t prompt any issues) I follow onto the configuration stage which throws up errors stating “Command failed: Could not connect to 192.168.68.202,192.168.68.201. Ensure that the relevant service is running and that the server can communicate with the node”

After checking the mdm service using “Service mdm status” I can see that on my slave mdm server 192.168.68.202 the mdm.service is failing. Both other nodes it is running successfully.



Some further digging and changing the option in /opt/emc/scaleio/mdm/cfg/conf.txt called actor_role_is_manager=1 to 0 allows the service to start.



Journalctl -xe



Jun 28 04:11:59 sio2 systemd[1]: Starting scaleio mdm…

— Subject: Unit mdm.service has begun start-up

— Defined-By: systemd

— Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

— Unit mdm.service has begun starting up.

Jun 28 04:11:59 sio2 run_bin.sh[3255]: declare -x LANG=”en_GB.UTF-8″

Jun 28 04:11:59 sio2 run_bin.sh[3255]: declare -x OLDPWD=”/”

Jun 28 04:11:59 sio2 run_bin.sh[3255]: declare -x PATH=”/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin”

Jun 28 04:11:59 sio2 run_bin.sh[3255]: declare -x PWD=”/opt/emc/scaleio/mdm/bin”

Jun 28 04:11:59 sio2 run_bin.sh[3255]: declare -x SHLVL=”1″

Jun 28 04:12:00 sio2 systemd[1]: mdm.service: main process exited, code=exited, status=254/n/a

Jun 28 04:12:00 sio2 systemd[1]: Unit mdm.service entered failed state.

Jun 28 04:12:00 sio2 systemd[1]: mdm.service failed.

Jun 28 04:12:00 sio2 systemd[1]: mdm.service has no holdoff time, scheduling restart.

Jun 28 04:12:00 sio2 systemd[1]: start request repeated too quickly for mdm.service

Jun 28 04:12:00 sio2 systemd[1]: Failed to start scaleio mdm.





Are you able to provide some assistance with getting my new cluster up and running?



Any help would be most appreciated.



Thanks, Alex.







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