Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Permission denied when trying to run PX4 roslaunch file

asked 2019-12-03 07:59:44 -0500

kris_1313
3 ●3 ●3 ●4

updated 2022-01-22 16:10:11 -0500

Evgeny
26 ●6

When I'm trying to run PX4 multi_uav_mavros_sitl.launch file it throws permission denial errors and kills the processes like this:

[rospack] Unable to create temporary cache file /home/kris/.ros/.rospack_cache.nJAzB8: Permission denied
[uav0/sitl_0-3] process has died [pid 5203, exit code 255, cmd /home/kris/Pobrane/src/Firmware/build/px4_sitl_default/bin/px4 /home/kris/Pobrane/src/Firmware/ROMFS/px4fmu_common -s etc/init.d-posix/rcS -i 0 -w sitl_iris_0 -d __name:=sitl_0 __log:=/home/kris/.ROS_log/4da30ac2-15d2-11ea-bd56-080027229f95/uav0-sitl_0-3.log].
log file: /home/kris/.ROS_log/4da30ac2-15d2-11ea-bd56-080027229f95/uav0-sitl_0-3*.log

my system:

ROS Melodic (supplied with PX4 stack)
Ubuntu 18.04 LTS x64 (kernel: 5.0.0-36-generic)

ROS enviroment variables:

ROS_ETC_DIR=/opt/ros/melodic/etc/ros
ROS_ROOT=/opt/ros/melodic/share/ros
ROS_MASTER_URI=http://localhost:11311
ROS_VERSION=1
ROS_PYTHON_VERSION=2
ROS_PACKAGE_PATH=/home/kris/catkin_ws/src/mavlink:/home/kris/catkin_ws/src/mavros/libmavconn:/home/kris/catkin_ws/src/mavros/mavros_msgs:/home/kris/catkin_ws/src/mavros/mavros:/home/kris/catkin_ws/src/mavros/mavros_extras:/home/kris/catkin_ws/src/mavros/test_mavros:/opt/ros/melodic/share
ROSLISP_PACKAGE_DIRECTORIES=/home/kris/catkin_ws/devel/share/common-lisp
ROS_DISTRO=melodic

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2019-12-03 11:36:50 -0500

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

updated 2019-12-04 08:37:20 -0500

Please show us the output of ls -al $HOME/.ros.

It's (very) likely that you've run roslaunch with sudo at some point in the past, which causes problems with access permissions for the $HOME/.ros directory.

Edit:

drwxr-xr-x  3 root root 4096 lis 23 19:43 .

as you can see from this, your $HOME/.ros is owned by root. That is why you receive permissions errors.

This should fix it:

sudo chown $USER: -R $HOME/.ros

This is one of the reasons never to run roslaunch (or rosrun) with sudo or as the root user.

edit flag offensive delete link

Comments

Here it is:

razem 12
drwxr-xr-x  3 root root 4096 lis 23 19:43 .
drwxr-xr-x 27 kris kris 4096 gru  4 15:33 ..
drwxr-xr-x  4 root root 4096 lis 23 19:43 rosdep

edit: it worked like damn charm :)

kris_1313 ( 2019-12-04 08:34:52 -0500 )edit

add a comment

Question Tools

1 follower

Stats

Asked: 2019-12-03 07:59:44 -0500

Seen: 1,240 times

Last updated: Dec 04 '19

Permission denied when trying to run PX4 roslaunch file edit

1 Answer

Comments

Question Tools

Stats

Related questions

Permission denied when trying to run PX4 roslaunch file