Couldn't connect to the redis server

[Playfish]

Hi, these days I am using rocon_tutorials for test my rocon installation but I get some problem which is I just got message of couldn't connect to redis server when I use two computers communication by wireless, and following is my configuration.
By the way chatter_concert can work properly individually.

Rocon installation

I just use code in here

Concert PC configuration

ROS_HOSTNAME=192.168.0.110
ROS_IP=192.168.0.110
ROS_MASTER_URI=http://192.168.0.110:11311
with /etc/hosts
192.168.0.1 inno

Client laptop configuration

ROS_HOSTNAME=inno
ROS_IP=192.168.0.101
ROS_MASTER_URI=http://localhost:11311
with /etc/hosts
127.0.1.1 inno

OUTPUT ON CONCERT PC

carl@carl-550-052cn:~$ roslaunch chatter_concert concert.launch --screen
... logging to /home/carl/.ros/log/3ddbc110-0d0b-11e7-97d6-d85de2b5c407/roslaunch-carl-550-052cn-14270.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://192.168.0.110:35496/

SUMMARY
========

PARAMETERS
 * /concert/conductor/auto_invite: True
 * /concert/conductor/local_clients_only: False
 * /concert/description: Pirates in concert.
 * /concert/gateway/default_blacklist: [{'node': 'None',...
 * /concert/gateway/disable_uuids: False
 * /concert/gateway/disable_zeroconf: False
 * /concert/gateway/external_shutdown: True
 * /concert/gateway/firewall: False
 * /concert/gateway/hub_uri: http://localhost:...
 * /concert/gateway/hub_whitelist: ['http://localhos...
 * /concert/gateway/name: Chatter Concert
 * /concert/gateway/network_interface: wlan0
 * /concert/gateway/watch_loop_period: 2
 * /concert/hub/external_shutdown: True
 * /concert/hub/gateway_dead_timeout: 7200
 * /concert/hub/gateway_unavailable_timeout: 10
 * /concert/hub/max_memory: 10mb
 * /concert/hub/name: Chatter Concert
 * /concert/hub/port: 6380
 * /concert/hub/watcher_thread_rate: 0.2
 * /concert/hub/zeroconf: True
 * /concert/icon: rocon_icons/rocon...
 * /concert/interactions/rosbridge_address: localhost
 * /concert/interactions/rosbridge_port: 9090
 * /concert/interactions/webserver_address: webapp.robotconce...
 * /concert/name: Chatter Concert
 * /concert/scheduler/enable_preemptions: False
 * /concert/services/concert_name: Chatter Concert
 * /concert/services/default_auto_enable_services: all
 * /concert/services/disable_cache: True
 * /concert/services/services: chatter_concert/c...
 * /concert/zeroconf/zeroconf/services: [{'port': 11311, ...
 * /rosdistro: indigo
 * /rosversion: 1.11.20

NODES
  /concert/zeroconf/
    zeroconf (zeroconf_avahi/zeroconf)
  /concert/
    concert_conductor_graph_to_string (concert_utilities/conductor_graph_to_string.py)
    conductor (concert_conductor/conductor.py)
    gateway (rocon_gateway/gateway.py)
    hub (rocon_hub/hub.py)
    interactions (rocon_interactions/interactions_manager.py)
    master (rocon_master_info/master.py)
    scheduler (concert_schedulers/compatibility_tree_scheduler.py)
    services (concert_service_manager/service_manager)
    software (concert_software_farmer/software_farmer.py)

auto-starting new master
process[master]: started with pid [14283]
ROS_MASTER_URI=http://192.168.0.110:11311

setting /run_id to 3ddbc110-0d0b-11e7-97d6-d85de2b5c407
process[rosout-1]: started with pid [14296]
started core service [/rosout]
process[concert/master-2]: started with pid [14299]
process[concert/services-3]: started with pid [14300]
process[concert/software-4]: started with pid [14301]
process[concert/conductor-5]: started with pid [14302]
process[concert/concert_conductor_graph_to_string-6]: started with pid [14307]
process[concert/scheduler-7]: started with pid [14318]
process[concert/interactions-8]: started with pid [14319]
process[concert/hub-9]: started with pid [14320]
process[concert/gateway-10]: started with pid [14321]
process[concert/zeroconf/zeroconf-11]: started with pid [14322]
[INFO] [WallTime: 1489972761.534692] Gateway : generated unique hash name [Chatter Concertf2ed345c76b547d6850c97286f804fd6]
[INFO] [WallTime: 1489972761.546939] Gateway : checking if zeroconf services are available...
[ INFO] [1489972761.551905671]: Zeroconf: added a listener [_ros-multimaster-hub._tcp]
[INFO] [WallTime: 1489972761.620913] Hub : version 2.8.4
[INFO] [WallTime: 1489972761.623488] scheduler request topic: ~requests
[INFO] [WallTime: 1489972761.699615] Service Manager : load service profile from default configuration
[INFO] [WallTime: 1489972761.796712] Hub : reset hub variables on the redis server.
[INFO] [WallTime: 1489972761.805772] Hub : advertising 'Chatter Concert' on zeroconf [_ros-multimaster-hub._tcp, port 6380]
[INFO] [WallTime: 1489972761.904834] Conductor : no hub yet available, spinning...
[ INFO] [1489972761.969940657]: Zeroconf: service successfully established [Chatter Concert][_concert-master._tcp][11311]
[INFO] [WallTime: 1489972762.005654] Conductor : no hub yet available, spinning...
[INFO] [WallTime: 1489972762.056840] Gateway : discovered hub directly [http://localhost:6380]
[INFO] [WallTime: 1489972762.106270] Conductor : no hub yet available, spinning...
[INFO] [WallTime: 1489972762.110502] Gateway : Found existing mismatched public key on the hub. Requesting resend for all flip-ins.
[INFO] [WallTime: 1489972762.115346] Gateway : registering on the hub [Chatter Concert]
[INFO] [WallTime: 1489972762.218069] {'auto_invite': True, 'oblivion_timeout': 3600, 'service_timeout': 5.0, 'groups': {'groups': {}, 'state': True, 'name': 'Default', 'parent': 0, 'parameters': {'auto_invite': True, 'oblivion_timeout': 3600, 'service_timeout': 5.0, 'local_clients_only': False}, 'type': '', 'id': 0}, 'local_clients_only': False}
Found the conductor, setting up subscribers inside /concert/conductor
[INFO] [WallTime: 1489972762.315420] Software Farm : ===== Available Softwares =====
[INFO] [WallTime: 1489972762.315716] Software Farm : - concert_software_common/web_video_server : Streams video via http
[INFO] [WallTime: 1489972762.315877] Software Farm : - concert_software_common/world_canvas_server : World canvas server
[INFO] [WallTime: 1489972762.401780] Conductor Graph To String : Initialised
Established under name 'Chatter Concert'
[ INFO] [1489972762.678408791]: Zeroconf: discovered new service [Chatter Concert][_ros-multimaster-hub._tcp][local][3][ipv4]
[INFO] [WallTime: 1489972762.786806] Service Manager : serving request to enable 'admin'
[ INFO] [1489972763.178627454]: Zeroconf: resolved service [Chatter Concert][_ros-multimaster-hub._tcp][local][3][ipv4][192.168.0.110:6380]
[INFO] [WallTime: 1489972763.619699] Gateway : blacklisting hub [already connected to this hub]
[INFO] [WallTime: 1489972763.974839] Interactions : loading Gateway Graph [rocon_gateway_graph-Admin-/services/admin]
[INFO] [WallTime: 1489972763.975140] Interactions : loading Conductor Graph [concert_conductor_graph-Admin-/services/admin]
[INFO] [WallTime: 1489972763.975441] Interactions : loading Ros Graph [rqt_graph-Admin-/services/admin]
[INFO] [WallTime: 1489972763.975642] Interactions : loading Concert Info [concert_info-Admin-/services/admin]
[INFO] [WallTime: 1489972763.975829] Interactions : loading Concert Service Administration [concert_admin_app-Admin-/services/admin]
[INFO] [WallTime: 1489972763.976037] Interactions : loading Concert Conductor Graph [web_app(http://webapp.robotconcert.org/concert_conductor_graph_web/index.html)-Admin-/services/admin]
[INFO] [WallTime: 1489972763.976432] Service Manager : service enabled [admin] [admin]
[INFO] [WallTime: 1489972763.976750] Service Manager : serving request to enable 'chatter'
started roslaunch server http://192.168.0.110:40741/

SUMMARY
========

PARAMETERS
 * /rosdistro: indigo
 * /rosversion: 1.11.20
 * /services/chatter/static_link_graph/filename: /home/carl/test_h...

NODES
  /services/chatter/
    static_link_graph (chatter_concert/static_link_graph_service.py)

ROS_MASTER_URI=http://192.168.0.110:11311
core service [/rosout] found
process[services/chatter/static_link_graph-1]: started with pid [14754]
[INFO] [WallTime: 1489972764.941014] ROCON requester feedback topic: /concert/scheduler/requests_c67c0d3f53f94ab898a075f4e5eb8a9c
[INFO] [WallTime: 1489972765.014407] requester feedback topic: ~requests_c67c0d3f53f94ab898a075f4e5eb8a9c
[INFO] [WallTime: 1489972765.534327] Interactions : loading Qt Listener [chatter_concert/remocon_dude-Chatter-/services/chatter]
[INFO] [WallTime: 1489972765.534652] Interactions : loading Android Listener [com.github.rosjava.android_remocons.listener.Listener-Chatter-/services/chatter]
[INFO] [WallTime: 1489972765.534837] Interactions : loading Ros Wiki - Chatter Concert [web_url(http://wiki.ros.org/chatter_concert)-Docs-/services/chatter]
[INFO] [WallTime: 1489972765.534998] Interactions : loading Roslaunch Listener [chatter_concert/listener.launch-Chatter-/services/chatter]
[INFO] [WallTime: 1489972765.535344] Service Manager : service enabled [chatter] [chatter]

OUTPUT ON Client laptop

`-turtlebot@turtlebot-ThinkPad-E450:~$` roslaunch chatter_concert dude.launch  --screen
... logging to /home/turtlebot/.ros/log/659c927e-0d0b-11e7-83c4-34e6adf9b735/roslaunch-turtlebot-ThinkPad-E450-14847.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://inno:34739/

SUMMARY
========

PARAMETERS
 * /app_manager/auto_rapp_installation: False
 * /app_manager/auto_start_rapp: False
 * /app_manager/capability_server_name: capability_server
 * /app_manager/local_remote_controllers_only: True
 * /app_manager/rapp_package_blacklist: []
 * /app_manager/rapp_package_whitelist: ['rocon_apps']
 * /app_manager/robot_icon: rocon_icons/cyber...
 * /app_manager/robot_name: Bodacious Dude
 * /app_manager/robot_type: pc
 * /app_manager/screen: True
 * /app_manager/simulation: False
 * /app_manager/use_gateway_uuids: True
 * /description: To err is human, ...
 * /gateway/default_advertisements: [{'node': '.*app_...
 * /gateway/default_blacklist: [{'node': 'None',...
 * /gateway/default_flips: [{'gateway': 'Pub...
 * /gateway/disable_uuids: False
 * /gateway/disable_zeroconf: False
 * /gateway/firewall: False
 * /gateway/hub_uri: http://localhost:...
 * /gateway/hub_whitelist: ['Chatter Concert...
 * /gateway/name: Bodacious Dude
 * /gateway/network_interface: wlan1
 * /gateway/watch_loop_period: 1
 * /icon: rocon_icons/cyber...
 * /name: Bodacious Dude
 * /rosdistro: indigo
 * /rosversion: 1.11.20

NODES
  /zeroconf/
    zeroconf (zeroconf_avahi/zeroconf)
  /
    app_manager (rocon_app_manager/rapp_manager.py)
    gateway (rocon_gateway/gateway.py)
    master (rocon_master_info/master.py)

auto-starting new master
process[master]: started with pid [15550]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to 659c927e-0d0b-11e7-83c4-34e6adf9b735
process[rosout-1]: started with pid [15947]
started core service [/rosout]
process[gateway-2]: started with pid [15984]
process[app_manager-3]: started with pid [15988]
process[master-4]: started with pid [15993]
process[zeroconf/zeroconf-5]: started with pid [15996]
[INFO] [WallTime: 1489972827.001559] Gateway : generated unique hash name [Bodacious Dude19dffa6eec08407d93e0c3a0c53f22d5]
[INFO] [WallTime: 1489972827.005663] Gateway : adding rule to public watchlist [publisher][.*status][.*app_manager]
[INFO] [WallTime: 1489972827.006017] Gateway : adding rule to public watchlist [service][.*platform_info][.*app_manager]
[INFO] [WallTime: 1489972827.006278] Gateway : adding rule to public watchlist [service][.*invite][.*app_manager]
[INFO] [WallTime: 1489972827.006530] Gateway : adding rule to public watchlist [service][.*list_rapps][.*app_manager]
[INFO] [WallTime: 1489972827.006787] Gateway : adding rule to public watchlist [service][.*get_status][.*app_manager]
[INFO] [WallTime: 1489972827.052911] Gateway : checking if zeroconf services are available...
[ INFO] [1489972827.074524743]: Zeroconf: added a listener [_ros-multimaster-hub._tcp]
[ INFO] [1489972827.080577239]: Zeroconf: discovered new service [Chatter Concert][_ros-multimaster-hub._tcp][local][3][ipv4]
[INFO] [WallTime: 1489972827.160586] Rapp Manager : indexing rapps...
[ INFO] [1489972827.580882006]: Zeroconf: resolved service [Chatter Concert][_ros-multimaster-hub._tcp][local][3][ipv4][192.168.0.110:6380]
[INFO] [WallTime: 1489972828.163579] Rapp Manager : determining runnable rapps...
[INFO] [WallTime: 1489972828.204722] Rapp Manager : disabling apps requiring capabilities [Couldn't find capability server node. Error: Node 'capability_server' not found.]
[INFO] [WallTime: 1489972828.205154] Rapp Manager : 'rocon_apps/meow_chirp' added to the list of runnable apps.
[INFO] [WallTime: 1489972828.205400] Rapp Manager : 'rocon_apps/moo_chirp' added to the list of runnable apps.
[INFO] [WallTime: 1489972828.205616] Rapp Manager : 'rocon_apps/angry_cat_chirp' added to the list of runnable apps.
[INFO] [WallTime: 1489972828.205789] Rapp Manager : 'rocon_apps/talker' added to the list of runnable apps.
[INFO] [WallTime: 1489972828.205943] Rapp Manager : 'rocon_apps/listener' added to the list of runnable apps.
[INFO] [WallTime: 1489972828.206085] Rapp Manager : 'rocon_apps/lion_chirp' added to the list of runnable apps.
[WARN] [WallTime: 1489972828.206244] Rapp Manager : 'rocon_apps/chirp' is not unique and has no preferred rapp. rocon_apps/moo_chirp' has been selected.
[INFO] [WallTime: 1489972828.212336] Rapp Manager : initialised.
[INFO] [WallTime: 1489972837.611896] Gateway : unresolvable hub [couldn't connect to the redis server]
^[[B^C[zeroconf/zeroconf-5] killing on exit
[master-4] killing on exit
[app_manager-3] killing on exit
[gateway-2] killing on exit
[INFO] [WallTime: 1489973033.259459] Gateway : shutting down.
[rosout-1] killing on exit
[master] killing on exit
shutting down processing monitor...
... shutting down processing monitor complete
done
turtlebot@turtlebot-ThinkPad-E450:~$ export ROS_IP=192.168.0.101
turtlebot@turtlebot-ThinkPad-E450:~$ roslaunch chatter_concert dude.launch  --screen
... logging to /home/turtlebot/.ros/log/fc427c7a-0d0b-11e7-b217-34e6adf9b735/roslaunch-turtlebot-ThinkPad-E450-3808.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://inno:37870/

SUMMARY
========

PARAMETERS
 * /app_manager/auto_rapp_installation: False
 * /app_manager/auto_start_rapp: False
 * /app_manager/capability_server_name: capability_server
 * /app_manager/local_remote_controllers_only: True
 * /app_manager/rapp_package_blacklist: []
 * /app_manager/rapp_package_whitelist: ['rocon_apps']
 * /app_manager/robot_icon: rocon_icons/cyber...
 * /app_manager/robot_name: Bodacious Dude
 * /app_manager/robot_type: pc
 * /app_manager/screen: True
 * /app_manager/simulation: False
 * /app_manager/use_gateway_uuids: True
 * /description: To err is human, ...
 * /gateway/default_advertisements: [{'node': '.*app_...
 * /gateway/default_blacklist: [{'node': 'None',...
 * /gateway/default_flips: [{'gateway': 'Pub...
 * /gateway/disable_uuids: False
 * /gateway/disable_zeroconf: False
 * /gateway/firewall: False
 * /gateway/hub_uri: http://localhost:...
 * /gateway/hub_whitelist: ['Chatter Concert...
 * /gateway/name: Bodacious Dude
 * /gateway/network_interface: wlan1
 * /gateway/watch_loop_period: 1
 * /icon: rocon_icons/cyber...
 * /name: Bodacious Dude
 * /rosdistro: indigo
 * /rosversion: 1.11.20

NODES
  /zeroconf/
    zeroconf (zeroconf_avahi/zeroconf)
  /
    app_manager (rocon_app_manager/rapp_manager.py)
    gateway (rocon_gateway/gateway.py)
    master (rocon_master_info/master.py)

auto-starting new master
process[master]: started with pid [4498]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to fc427c7a-0d0b-11e7-b217-34e6adf9b735
process[rosout-1]: started with pid [4856]
started core service [/rosout]
process[gateway-2]: started with pid [4901]
process[app_manager-3]: started with pid [4916]
process[master-4]: started with pid [4921]
process[zeroconf/zeroconf-5]: started with pid [4927]
[INFO] [WallTime: 1489973079.814909] Gateway : generated unique hash name [Bodacious Dudec3675266241541f283c1f7ffee8a5c48]
[INFO] [WallTime: 1489973079.818722] Gateway : adding rule to public watchlist [publisher][.*status][.*app_manager]
[INFO] [WallTime: 1489973079.819027] Gateway : adding rule to public watchlist [service][.*platform_info][.*app_manager]
[INFO] [WallTime: 1489973079.819278] Gateway : adding rule to public watchlist [service][.*invite][.*app_manager]
[INFO] [WallTime: 1489973079.819486] Gateway : adding rule to public watchlist [service][.*list_rapps][.*app_manager]
[INFO] [WallTime: 1489973079.819735] Gateway : adding rule to public watchlist [service][.*get_status][.*app_manager]
[INFO] [WallTime: 1489973079.892867] Gateway : checking if zeroconf services are available...
[ INFO] [1489973079.910255763]: Zeroconf: added a listener [_ros-multimaster-hub._tcp]
[ INFO] [1489973079.912139424]: Zeroconf: discovered new service [Chatter Concert][_ros-multimaster-hub._tcp][local][3][ipv4]
[INFO] [WallTime: 1489973080.071430] Rapp Manager : indexing rapps...
[ INFO] [1489973080.412390091]: Zeroconf: resolved service [Chatter Concert][_ros-multimaster-hub._tcp][local][3][ipv4][192.168.0.110:6380]
[INFO] [WallTime: 1489973081.099902] Rapp Manager : determining runnable rapps...
[INFO] [WallTime: 1489973081.140221] Rapp Manager : disabling apps requiring capabilities [Couldn't find capability server node. Error: Node 'capability_server' not found.]
[INFO] [WallTime: 1489973081.140977] Rapp Manager : 'rocon_apps/meow_chirp' added to the list of runnable apps.
[INFO] [WallTime: 1489973081.141439] Rapp Manager : 'rocon_apps/moo_chirp' added to the list of runnable apps.
[INFO] [WallTime: 1489973081.141767] Rapp Manager : 'rocon_apps/angry_cat_chirp' added to the list of runnable apps.
[INFO] [WallTime: 1489973081.142003] Rapp Manager : 'rocon_apps/talker' added to the list of runnable apps.
[INFO] [WallTime: 1489973081.142240] Rapp Manager : 'rocon_apps/listener' added to the list of runnable apps.
[INFO] [WallTime: 1489973081.142440] Rapp Manager : 'rocon_apps/lion_chirp' added to the list of runnable apps.
[WARN] [WallTime: 1489973081.142702] Rapp Manager : 'rocon_apps/chirp' is not unique and has no preferred rapp. rocon_apps/moo_chirp' has been selected.
[INFO] [WallTime: 1489973081.151224] Rapp Manager : initialised.
[INFO] [WallTime: 1489973090.439887] Gateway : unresolvable hub [couldn't connect to the redis server]

Thank you!
Waiting for the letter！

[asmodehn]

After a quick look this seems to be a network setup issue...
Please double check your network settings. Rocon is not a simple client-server software, it is multi-master, meaning all machines need to be able to connect to all other machines. that means the IP/hostname defined need to be resolvable for all.

Looking at the configuration you describe, are you sure that inno is 192.168.0.1 ? It is defined as 192.168.0.101 ?

[Playfish]

@asmodehn Hi, Thank you very much for your answer.
I got some confused about rocon multimaster configuration, such as what is meaning about inno? How to configure network let each machines know each other.
And I follow your advices that change my PC's inno to 192.168.0.101 in /etc/hosts, but I got the same problems, Can you tell me if my configuration is wrong?
Thanks!