Linux : runtime-user

Are there any reasons that XFUltrascale (UDaemon) must be run as root or can it be run as any user?

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KEO Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 May 2012 Location: Oslo, Norway Posts: 3	Post Options Post Reply Quote KEO Report Post Quote Reply Topic: Linux : runtime-user Posted: 13 Jun 2012 at 3:43am
	Are there any reasons that XFUltrascale (UDaemon) must be run as root or can it be run as any user?

justinw Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Group Joined: 08 Dec 2011 Posts: 162	Post Options Post Reply Quote justinw Report Post Quote Reply Posted: 15 Jun 2012 at 11:24am
	Hello KEO, Thanks for reaching out with your question. The linux build can be installed only as root. However, the Ultrascale service can run as another user. You would need to follow these steps: 1. Login as root and stop the service using command: /etc/initd/ultrascaled stop. You would need to do this because a service started by root can be stopped only by root. 2. Login as normal user and start the service using command: /etc/initd/ultrascaled start Regards, Ecrion Technical Support

KEO Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 May 2012 Location: Oslo, Norway Posts: 3	Post Options Post Reply Quote KEO Report Post Quote Reply Posted: 30 Nov 2012 at 10:18am
	Hello Justin I think you are wrong about bullet 2: I have tried to run Ultrascale as another user only to see that it fails because it cannot update the /var/lock/subsys directory which can only be updated by root. To run as another user you will have to change the effective user from whithin the code of the system. It is not possible to achieve this from the outside... Regards, KEO

justinw Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Group Joined: 08 Dec 2011 Posts: 162	Post Options Post Reply Quote justinw Report Post Quote Reply Posted: 03 Dec 2012 at 8:55am
	Hello KEO, Thank you for the response here. /etc/init.d/ultrascaled is meant to be accessed by root or at system boot and the script accesses '/var/lock/subsys/UDaemon' With this command line, we could reproduce the error: “touch: cannot touch `/var/lock/subsys/UDaemon': Permission denied” However, if you will enter the following command, you can see that the process still starts, even if the error is thrown. # ps waux \| grep UD testuser 10049 0.0 1.1 184332 22752 ? Ssl 08:12 0:de00 /opt/Ecrion/XFUltrascale/Bin/UDaemon testuser 10061 0.0 0.0 61168 728 pts/0 S+ 08:12 0:00 grep UD Instead of accessing /etc/init.d/ultrascaled, you should directly use: /opt/Ecrion/XFUltrascale/Bin/UDaemon Please attempt to run the following commands: /opt/Ecrion/XFUltrascale/Bin/UDaemon ps waux \| grep UD If the process still cannot be started, please send us an email at support@ecrion.com and we can assist in resolving your issue further. Ecrion Technical Support