Re: [Machinekit] /usr/libexec/linuxcnc/rtapi_app_posix not setuid

[schoone...@gmail.com]

This has come up previously on this list. If your kernel is not recognised as rt-preempt, flavour will default to POSIX. Then when machinekit tries to load the posix version of rtapi_app, it fails because that does not exist. The setuid warning is a red herring. Your kernel 4.14.108-ti-r104 #1 SMP PREEMPT may be the same one someone else tried to use with the same result. I would expect to see ' SMP RT PREEMPT' in the uname output if it was a proper rt-preempt kernel. Search the posts and you will find which kernel they went with in the end. On 15/04/19 09:38, Sardar Vayghannezgad wrote: Hi I want to run the PocketNC config on my BBB, but it outputs (lines looking important to my eyes are in colors or underlined): machinekit@beaglebone:~$ machinekit MACHINEKIT - 0.1 Machine configuration directory is '/home/machinekit/machinekit/configs/ARM.BeagleBone.PocketNC' Machine configuration file is 'PocketNC.ini' Starting Machinekit... Warning - /usr/libexec/linuxcnc/rtapi_app_posix not setuid 'sudo make setuid' missing? rtapi_msgd command:  /usr/libexec/linuxcnc/rtapi_msgd --instance=0 --rtmsglevel=1 --usrmsglevel=1 --halsize=524288 rtapi_app command:  /usr/libexec/linuxcnc/rtapi_app_posix --instance=0 /usr/bin/realtime: line 237: /usr/libexec/linuxcnc/rtapi_app_posix: No such file or directory rtapi_app startup failed; aborting halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log E: 19-04-15 10:33:22 dangling 'DEALER' socket created at hal/utils/halcmd_rtapiapp.cc:284 io started halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log E: 19-04-15 10:33:27 dangling 'DEALER' socket created at hal/utils/halcmd_rtapiapp.cc:284 halcmd loadusr io started halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log E: 19-04-15 10:33:33 dangling 'DEALER' socket created at hal/utils/halcmd_rtapiapp.cc:284 halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log E: 19-04-15 10:33:38 dangling 'DEALER' socket created at hal/utils/halcmd_rtapiapp.cc:284 Shutting down and cleaning up Machinekit... halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log E: 19-04-15 10:33:46 dangling 'DEALER' socket created at hal/utils/halcmd_rtapiapp.cc:284 halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log E: 19-04-15 10:33:51 dangling 'DEALER' socket created at hal/utils/halcmd_rtapiapp.cc:284 halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log halcmd: cant connect to rtapi_app: -1 (uri= uuid=cbc792ea-1cc7-4bda-a949-9dd1552ce3bc): rtapi_rpc(): reply timeout halcmd: the rtapi:0 RT demon is not running - please investigate /var/log/linuxcnc.log Warning - /usr/libexec/linuxcnc/rtapi_app_posix not setuid 'sudo make setuid' missing? ERROR:  msgd:0 failed to exit on its own; sending SIGTERM Cleanup done Machinekit terminated with an error.  For simple cases more information can be found in the following files:     /home/machinekit/linuxcnc_debug.txt     /home/machinekit/linuxcnc_print.txt For other cases get more meaningfull information by restarting after     export DEBUG=5 and look at the output of:     /var/log/linuxcnc.log     dmesg When looking for errors, specifically look for libraries that fail to load by looking for lines with 'insmod failed' as per example below. insmod failed, returned -1: do_load_cmd: dlopen: nonexistant-component.so: cannot open shared object file: No such file or directory For getting help, please have a look here: www.machinekit.io/docs/getting-help/ My system info. is: Linux beaglebone 4.14.108-ti-r104 #1 SMP PREEMPT Tue Apr 9 18:16:29 UTC 2019 armv7l GNU/Linux As for the warning in red In the error above, I browsed the directory, and found it looks like: machinekit@beaglebone:/usr/libexec/linuxcnc$ ls flavor  inivar  pci_read  pci_write  rtapi_app_rt-preempt  rtapi_msgd As obvious, rtapi_app_posix is missing. As for the line in yellow, line 237 of my realtime file goes: local cmd=(${rtapi_app} --instance=$MK_INSTANCE $RTAPI_APP_OPTS)     if [ $DEBUG -gt 0 ] ; then         echo "rtapi_app command:  ${cmd[@]}" >&2         "${cmd[@]}" || (             e=$?; echo "rtapi_app startup failed; aborting" >&2; exit $e)     else         "${cmd[@]}" 2>&1 || (             e=$?; echo "rtapi_app startup failed; aborting" >&2; exit $e)     fi As for the closing errors, I have no idea what to do. Opening the file /var/log/linuxcnc.log, pointed out in the error, I have already done these to fix previous/this problem: Applied these instructions to shift from tree overlays to U-boots. To overcome a "permission denied" error I used to get, a friend of mine applied a chmod 755 command (or something) and the error doesn't appear anymore apparently. If you believe any of the steps I have already taken should have fixed my problem, let me know please; as I might have missed something somewhere, as someone new to Linux, M.K and BBB. It looks like I have ended up in a dead end on my task. Please help me out with this, I feel like I have already gone the extent to which I could go as a beginner. -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to machinekit+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout. -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to machinekit+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.