yes i did follow the documentation.
in particular environment variable are correctly set.
ubuntu@magni-workstation:~$ printenv | grep ROS
ROS_ROOT=/opt/ros/kinetic/share/ros
ROS_PACKAGE_PATH=/opt/ros/kinetic/share
ROS_MASTER_URI=http://10.155.107.59:11311
ROS_VERSION=1
ROSLISP_PACKAGE_DIRECTORIES=
ROS_DISTRO=kinetic
ROS_IP=10.155.107.59
ROS_ETC_DIR=/opt/ros/kinetic/etc/ros
ubuntu@magni-workstation:~$ tail -n 3 ~/.bashrc
export ROS_MASTER_URI=http://10.155.107.59:11311
export ROS_IP=10.155.107.59
ubuntu@magni-workstation:~$
the magni can ping the workstation and workstation can ping magni.
What i dont get is that i made a network recording of eth0 from the worstation ( tcpdump -i eth0 -s 0 -w /tmp/output.pcap ) immediately before starting rviz (roslaunch magni_viz view_nav.launch)
Looking at the trace in wireshark, I can see that some remote procedure call is initiated.
REQUEST
POST /RPC2 HTTP/1.1
Host: 10.155.107.59:11311
Accept-Encoding: gzip
User-Agent: xmlrpclib.py/1.0.1 (by www.pythonware.com)
Content-Type: text/xml
Content-Length: 219
<?xml version='1.0'?>
<methodCall>
<methodName>getParam</methodName>
<params>
<param>
<value><string>/roslaunch</string></value>
</param>
<param>
<value><string>/run_id</string></value>
</param>
</params>
</methodCall>
RESPONSE
HTTP/1.0 200 OK
Server: BaseHTTP/0.3 Python/2.7.12
Date: Mon, 13 Aug 2018 12:35:59 GMT
Content-type: text/xml
Content-length: 287
<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><array><data>
<value><int>1</int></value>
<value><string>Parameter [/run_id]</string></value>
<value><string>0a9a5338-df79-11d4-9b82-0b0cee1bdca6</string></value>
</data></array></value>
</param>
</params>
</methodResponse>
Some there is network communication going on (cant attach pcap here :’( ) + And ufw is not running on the workstation at all.
root@magni-workstation:~# cat /home/ubuntu/.ros/log/0a9a5338-df79-11d4-9b82-0b0cee1bdca6/roslaunch-magni-workstation-15180.log
[roslaunch][INFO] 2018-08-13 05:48:49,981: Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
[roslaunch][INFO] 2018-08-13 05:48:49,984: Done checking log file disk usage. Usage is <1GB.
[roslaunch][INFO] 2018-08-13 05:48:49,985: roslaunch starting with args ['/opt/ros/kinetic/bin/roslaunch', 'magni_viz', 'view_robot.launch']
[roslaunch][INFO] 2018-08-13 05:48:49,985: roslaunch env is {'WINDOWID': '52428810', 'MANDATORY_PATH': '/usr/share/gconf/ubuntu.mandatory.path', 'ROS_DISTRO': 'kinetic', 'ROS_LOG_FILENAME': '/home/ubuntu/.ros/log/0a9a5338-df79-11d4-9b82-0b0cee1bdca6/roslaunch-magni-workstation-15180.log', 'XDG_GREETER_DATA_DIR': '/var/lib/lightdm-data/ubuntu', 'GNOME_DESKTOP_SESSION_ID': 'this-is-deprecated', 'PKG_CONFIG_PATH': '/opt/ros/kinetic/lib/pkgconfig:/opt/ros/kinetic/lib/x86_64-linux-gnu/pkgconfig', 'UPSTART_EVENTS': 'xsession started', 'LESSOPEN': '| /usr/bin/lesspipe %s', 'XDG_SESSION_TYPE': 'x11', 'ROSLISP_PACKAGE_DIRECTORIES': '', 'QT_IM_MODULE': 'ibus', 'LOGNAME': 'ubuntu', 'USER': 'ubuntu', 'PATH': '/opt/ros/kinetic/bin:/home/ubuntu/bin:/home/ubuntu/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin', 'XDG_VTNR': '7', 'GNOME_KEYRING_CONTROL': '', 'CMAKE_PREFIX_PATH': '/opt/ros/kinetic', 'LD_LIBRARY_PATH': '/opt/ros/kinetic/lib:/opt/ros/kinetic/lib/x86_64-linux-gnu', 'LANG': 'en_US.UTF-8', 'TERM': 'xterm-256color', 'SHELL': '/bin/bash', 'XDG_SESSION_PATH': '/org/freedesktop/DisplayManager/Session0', 'XAUTHORITY': '/home/ubuntu/.Xauthority', 'LANGUAGE': 'en_US', 'COMPIZ_CONFIG_PROFILE': 'ubuntu-lowgfx', 'SHLVL': '1', 'QT_LINUX_ACCESSIBILITY_ALWAYS_ON': '1', 'QT_QPA_PLATFORMTHEME': 'appmenu-qt5', 'CLUTTER_IM_MODULE': 'xim', 'DISPLAY': ':0', 'UPSTART_INSTANCE': '', 'QT_ACCESSIBILITY': '1', 'SESSION': 'ubuntu', 'LIBGL_ALWAYS_SOFTWARE': '1', 'SESSIONTYPE': 'gnome-session', 'XMODIFIERS': '@im=ibus', 'ROS_ETC_DIR': '/opt/ros/kinetic/etc/ros', 'GPG_AGENT_INFO': '/home/ubuntu/.gnupg/S.gpg-agent:0:1', 'HOME': '/home/ubuntu', 'QT4_IM_MODULE': 'xim', 'GTK2_MODULES': 'overlay-scrollbar', 'XDG_SESSION_DESKTOP': 'ubuntu', 'COMPIZ_BIN_PATH': '/usr/bin/', 'XDG_RUNTIME_DIR': '/run/user/1000', 'INSTANCE': '', 'PYTHONPATH': '/opt/ros/kinetic/lib/python2.7/dist-packages', 'ROS_IP': '10.155.107.59', 'SSH_AUTH_SOCK': '/run/user/1000/keyring/ssh', 'VTE_VERSION': '4205', 'ROS_ROOT': '/opt/ros/kinetic/share/ros', 'GDMSESSION': 'ubuntu', 'IM_CONFIG_PHASE': '1', 'UPSTART_JOB': 'unity7', 'LESSCLOSE': '/usr/bin/lesspipe %s %s', 'GNOME_KEYRING_PID': '', 'XDG_SEAT_PATH': '/org/freedesktop/DisplayManager/Seat0', 'ROS_PACKAGE_PATH': '/opt/ros/kinetic/share', 'XDG_CURRENT_DESKTOP': 'Unity', 'XDG_SESSION_ID': 'c1', 'DBUS_SESSION_BUS_ADDRESS': 'unix:abstract=/tmp/dbus-Fz8w9BnfVu', '_': '/opt/ros/kinetic/bin/roslaunch', 'DEFAULTS_PATH': '/usr/share/gconf/ubuntu.default.path', 'GTK_IM_MODULE': 'ibus', 'DESKTOP_SESSION': 'ubuntu', 'UPSTART_SESSION': 'unix:abstract=/com/ubuntu/upstart-session/1000/1586', 'XDG_CONFIG_DIRS': '/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg', 'GTK_MODULES': 'gail:atk-bridge:unity-gtk-module', 'GDM_LANG': 'en_US', 'XDG_DATA_DIRS': '/usr/share/ubuntu:/usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop:/var/lib/snapd/desktop', 'PWD': '/home/ubuntu', 'JOB': 'unity-settings-daemon', 'ROS_MASTER_URI': 'http://10.155.107.59:11311', 'ROS_VERSION': '1', 'LS_COLORS': 'rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:', 'XDG_SEAT': 'seat0'}
[roslaunch][INFO] 2018-08-13 05:48:49,985: starting in server mode
[roslaunch.parent][INFO] 2018-08-13 05:48:49,985: starting roslaunch parent run
[roslaunch][INFO] 2018-08-13 05:48:49,985: loading roscore config file /opt/ros/kinetic/etc/ros/roscore.xml
[roslaunch][INFO] 2018-08-13 05:48:50,374: Added core node of type [rosout/rosout] in namespace [/]
[roslaunch.config][INFO] 2018-08-13 05:48:50,374: loading config file /opt/ros/kinetic/share/magni_viz/launch/view_robot.launch
[roslaunch][INFO] 2018-08-13 05:48:50,400: Added node of type [rviz/rviz] in namespace [/]
[roslaunch][INFO] 2018-08-13 05:48:50,400: ... selected machine [] for node of type [rviz/rviz]
[roslaunch.pmon][INFO] 2018-08-13 05:48:50,401: start_process_monitor: creating ProcessMonitor
[roslaunch.pmon][INFO] 2018-08-13 05:48:50,401: created process monitor <ProcessMonitor(ProcessMonitor-1, initial daemon)>
[roslaunch.pmon][INFO] 2018-08-13 05:48:50,401: start_process_monitor: ProcessMonitor started
[roslaunch.parent][INFO] 2018-08-13 05:48:50,402: starting parent XML-RPC server
[roslaunch.server][INFO] 2018-08-13 05:48:50,402: starting roslaunch XML-RPC server
[roslaunch.server][INFO] 2018-08-13 05:48:50,402: waiting for roslaunch XML-RPC server to initialize
[xmlrpc][INFO] 2018-08-13 05:48:50,402: XML-RPC server binding to 0.0.0.0:0
[xmlrpc][INFO] 2018-08-13 05:48:50,402: Started XML-RPC server [http://10.155.107.59:33925/]
[xmlrpc][INFO] 2018-08-13 05:48:50,402: xml rpc node: starting XML-RPC server
[roslaunch.pmon][INFO] 2018-08-13 05:48:55,429: ProcessMonitor.shutdown <ProcessMonitor(ProcessMonitor-1, started daemon 139828249958144)>
[roslaunch.pmon][INFO] 2018-08-13 05:48:55,508: ProcessMonitor._post_run <ProcessMonitor(ProcessMonitor-1, started daemon 139828249958144)>
[roslaunch.pmon][INFO] 2018-08-13 05:48:55,508: ProcessMonitor._post_run <ProcessMonitor(ProcessMonitor-1, started daemon 139828249958144)>: remaining procs are []
[roslaunch.pmon][INFO] 2018-08-13 05:48:55,509: ProcessMonitor exit: cleaning up data structures and signals
[roslaunch.pmon][INFO] 2018-08-13 05:48:55,509: ProcessMonitor exit: pmon has shutdown
[roslaunch][ERROR] 2018-08-13 05:48:55,510: Unable to contact my own server at [http://10.155.107.59:33925/].
This usually means that the network is not configured properly.
A common cause is that the machine cannot ping itself. Please check
for errors by running:
ping 10.155.107.59
For more tips, please see
http://www.ros.org/wiki/ROS/NetworkSetup
[roslaunch][ERROR] 2018-08-13 05:48:55,510: The traceback for the exception was written to the log file
[roslaunch][ERROR] 2018-08-13 05:48:55,511: Traceback (most recent call last):
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/__init__.py", line 306, in main
p.start()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", line 268, in start
self._start_infrastructure()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", line 226, in _start_infrastructure
self._start_server()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", line 177, in _start_server
self.server.start()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/server.py", line 405, in start
"""%(self.uri, p.hostname))
RLException: Unable to contact my own server at [http://10.155.107.59:33925/].
This usually means that the network is not configured properly.
A common cause is that the machine cannot ping itself. Please check
for errors by running:
ping 10.155.107.59
For more tips, please see
http://www.ros.org/wiki/ROS/NetworkSetup
[rospy.core][INFO] 2018-08-13 05:48:55,511: signal_shutdown [atexit]
root@magni-workstation:~#
I dont get it. I made this test a few months ago from that very workstation agaist another older ubiquityrobotics pi image => and it was working all right !
there must be something but i dont see it.
any idea?
