Content Comparison

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1. Optional: Setup access for local IP/host

   If you are running lava on a machine with a fixed IP (eg: a dedicated computer on your local network) you will want to modify the  overlays/lava-server/etc/lava-server/settings.conf file to allow access.  You'll want to modify the ALLOWED_HOSTS line to add the ip or hostname of the machine.  In the example below, the ip 192.168.1.14 was added, you'll want to keep 127.0.0.1 and localhost .

   Code Block
   language yml linenumbers true
   { "HTTPS_XML_RPC": false, "MOUNT_POINT": "/", "STATIC_URL": "/static/", "ALLOWED_HOSTS": ["192.168.1.14", "127.0.0.1", "localhost"], "CSRF_COOKIE_SECURE": false, "SESSION_COOKIE_SECURE": false, "EVENT_NOTIFICATION": true, "EVENT_TOPIC": "lava-server", "INTERNAL_EVENT_SOCKET": "tcp://lava-publisher:5557" }

   
   

2. Optional: Add the proxy settings in lite-lava-dispatcher and ser2net images

   It might be required to define proxy setting in lite-lava-dispatcher/Dockerfile and ser2net/Dockerfile

   Code Block
   language bash
   ENV http_proxy=http://<user>:<pwd>@<proxy>:<port> ENV https_proxy=http://<user>:<pwd>@<proxy>:<port>

   
   

3. Optional: Configure DNS in /etc/docker/daemon.json

   Do this only if you are sure you need this. Otherwise, hardcoding a particular (local) DNS server may lead to issues when using another network connection, etc.
   

   Get host DNS:

   Code Block
   language bash
   nmcli dev show | grep 'IP4.DNS'

   Set reported value in /etc/docker/daemon.json:

   Code Block
   language yml
   { "dns": ["w.x.y.z"] }

   
   

4. Run commands to build docker images and startup lava

   Code Block
   language bash
   docker-compose build make

   You'll see output of docker fetching and building the images, and then all LAVA containers starting up, followed by a fair amount of logging from LAVA itself as it starts up.  This may take a few minutes to complete.

   Here are some examples of the output one can expect during this phase:
   
   

   • Docker Compose/Build Phase

     Code Block
     language bash
     galak@ubuntu:~/lite-lava-docker-compose$ make docker-compose up Creating volume "lava-server-pgdata" with default driver Creating volume "lava-server-devices" with default driver Creating volume "lava-server-health-checks" with default driver Creating volume "lava-server-joboutput" with default driver Pulling db (postgres:11.2-alpine)... 11.2-alpine: Pulling from library/postgres bdf0201b3a05: Pull complete 365f27dc05d7: Pull complete bf541d40dfbc: Pull complete 823ce70c3252: Extracting [========> ] 4.194MB/25.04MB a92a31ecd32a: Download complete 83cc8c6d8282: Download complete 7995b9edc9bf: Download complete 7616119153d9: Download complete b3f69561e369: Download complete

     
     

   • Lava containers being created

     Code Block
     language bash
     Creating lava-server-db ... done Creating lava-dispatcher ... done Creating lava-ser2net ... done Creating lava-publisher ... done Creating lava-master ... done Creating lava-logs ... done Creating lava-server ... done Creating apache2 ...

     
     

   • Lava starting up

     Code Block
     language bash
     lava-master | Applying lava_results_app.0012_namedtestattribute_metadata... OK lava-server | . lava-master | Applying lava_results_app.0013_buglinks... OK lava-master | Applying lava_results_app.0014_xaxis_maxlength_increase... OK lava-master | Applying dashboard_app.0002_auto_20140917_1935... OK lava-logs | . lava-master | Applying dashboard_app.0003_auto_20140926_1208... OK lava-master | Applying dashboard_app.0004_imagereportchart_is_delta... OK lava-dispatcher | 2019-05-09 19:01:08,522 DEBUG [BTSP] Checking master [lava-master:5556] to create socket for lava-dispatcher lava-dispatcher | 2019-05-09 19:01:08,524 DEBUG [BTSP] socket IPv4 address: 172.18.0.6 lava-dispatcher | 2019-05-09 19:01:08,525 INFO [BTSP] Greeting master => 'HELLO_RETRY' (using the same version?) lava-master | Applying dashboard_app.0005_imagereportchart_chart_height... OK lava-master | Applying dashboard_app.0006_auto_20141028_1146... OK lava-master | Applying dashboard_app.0007_imagereportchart_chart_visibility... OK lava-server | . lava-master | Applying dashboard_app.0008_imagechartfilter_is_all_tests_included... OK

     
     

   • Lava idle

     Code Block
     language bash
     lava-dispatcher | 2019-05-09 19:03:21,510 DEBUG PING => master (last message 20s ago) lava-master | 2019-05-09 19:03:21,513 DEBUG lava-dispatcher => PING(20) lava-dispatcher | 2019-05-09 19:03:21,519 DEBUG master => PONG(20) lava-master | 2019-05-09 19:03:36,201 INFO scheduling health checks: lava-master | 2019-05-09 19:03:36,205 INFO scheduling jobs: lava-master | 2019-05-09 19:03:38,651 DEBUG lava-logs => PING(20) lava-logs | 2019-05-09 19:03:38,648 DEBUG PING => master lava-logs | 2019-05-09 19:03:38,657 DEBUG master => PONG(20) lava-master | 2019-05-09 19:03:41,549 DEBUG lava-dispatcher => PING(20) lava-dispatcher | 2019-05-09 19:03:41,546 DEBUG PING => master (last message 20s ago) lava-dispatcher | 2019-05-09 19:03:41,555 DEBUG master => PONG(20) lava-master | 2019-05-09 19:03:56,221 INFO scheduling health checks: lava-master | 2019-05-09 19:03:56,225 INFO scheduling jobs: lava-logs | 2019-05-09 19:03:58,681 DEBUG PING => master lava-master | 2019-05-09 19:03:58,684 DEBUG lava-logs => PING(20) lava-logs | 2019-05-09 19:03:58,690 DEBUG master => PONG(20) lava-master | 2019-05-09 19:04:01,579 DEBUG lava-dispatcher => PING(20) lava-dispatcher | 2019-05-09 19:04:01,577 DEBUG PING => master (last message 20s ago) lava-dispatcher | 2019-05-09 19:04:01,584 DEBUG master => PONG(20)

     
     

5. Verify lava is running
   

   You can verify that lava has completed startup by trying to connect to the LAVA webserver in a web browser by going to localhost.

   Here's what the startup webpage should look like in your web browser:

   

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1. Setup the device type

    (Note how we use the -i dispatcher identity we created in the previous steps).

   Code Block
   language bash
   lavacli -i dispatcher device-types add frdm-k64f

   
   

2. Add a board instance

   Now that the device-type is registered, we need to create a device instance.  In the example below we are creating a device instance called test-frdm called frdm-k64f-01 (the naming follows the Cambridge lab setup: https://lite.validation.linaro.org/scheduler/alldevices) .  

   Code Block
   language bash
   lavacli -i dispatcher devices add --type frdm-k64f --worker lava-dispatcher testfrdm-k64f-frdm01

   Note: the --worker lava-dispatcher argument in this command is used to specify the name of the Lava dispatcher that the board is physically connected to.  The Lava architecture allows multiple dispatchers to be connected to a single server.  The docker solution we are utilizing is configured for a single dispatcher called lava-dispatcher.
   
   

3. Connect the board

   Back in the Building & Starting up the LAVA Docker images section we mentioned to disconnect the board.  Please connect the board back to your computer.  If you didn't disconnect the board in the Building stage that's ok, please disconnect and reconnect the board.  The reason we wanted the board disconnect until this point is that we wanted the docker container for the lava-dispatcher up and running before the board was connected.  If you remember we added some udev rules back in the host setup stage.  Those udev rules invoke the usb-passthrough utility.  The purpose of that utility is to "setup" the various usb devices (serial, usb mass storage, debug) in the lava-dispatch container.  The udev rules rely on the hotplug event associated with the board being plugged in.  Thus if we plugged in the board before the docker containers were running the containers wouldn't know about the board.
   
   

4. Generate the parameters for the board instance

   Now that the board is connected we need to let lava know some details specific to this board.  In the case of the FRDM-K64F board we need to let Lava know what the serial number of the board is, the device file for the mass storage device, and how to connect to the serial port.  These parameters are specified in a jinja2 template format.  There is a helper script that given the device type and serial number of the board will create or report information associated with setting up the board.  The  contrib/board-setup-helper.py at a minimum needs the -d (serial number) and -t (device type - matches the lava device type) flags.  We also specify the -u flag in our example to report the udev rules.  Finally there are a -s and -b options to specify the ser2net config filename and board jinja filename.  By default the script will look to modify ser2net/ser2net.conf  if the -s options is not specified and will create board.jinja2 if the -b option is not specified.

   • contrib/board-setup-helper.py help

     Code Block
     language bash
     contrib/board-setup-helper.py -h usage: board-setup-helper.py -d DEVICE_SERIAL_NUM -t DEVICE_TYPE [-s SER2NET_CONF] [-u] [-b BOARD_FILE] contrib/board-setup-helper.py -d <DEVICE_SERIAL_NUM> -t <DEVICE_TYPE>

     
     

   • command to run
     Here we use the serial number ( 0240000031754e45001c0019948500046461000097969900 ) and device type ( frdm-k64f ) from before 

     Code Block
     language bash
     contrib/board-setup-helper.py -d 0240000031754e45001c0019948500046461000097969900 -t frdm-k64f -u

     
     

   • output from command
     Here we see that the -u option reports back the udev rules that we would need to add for this board.  These rules match the ones we specified back in the host setup stage.

     Code Block
     language bash
     ACTION=="add", ENV{ID_SERIAL_SHORT}=="0240000031754e45001c0019948500046461000097969900", RUN+="/usr/local/bin/usb-passthrough -a -d %E{ID_SERIAL_SHORT} -i lava-dispatcher" ACTION=="add", SUBSYSTEM=="tty", ENV{ID_SERIAL_SHORT}=="0240000031754e45001c0019948500046461000097969900", RUN+="/usr/local/bin/usb-passthrough -a -d %E{ID_SERIAL_SHORT} -i lava-ser2net"

     
     

   • ser2net/ser2net.conf file
     ser2net is a utility that allows exposing a serial port device as a network connection.  We generate

     Code Block
     language bash
     5001:telnet:0:/dev/serial/by-id/usb-ARM_DAPLink_CMSIS-DAP_0240000031754e45001c0019948500046461000097969900-if01:115200 8DATABITS NONE 1STOPBIT LOCAL max-connections=10

     
     

   • board.jinja2 file
     As mentioned before the board.jinja2 file provides unique details about the specific board

     • board_id : serial number

     • usb_mass_device : device file for USB mass storage device that one would mount.  We use the /dev/disk/by-id so that the name is persistent for the board

     • connection_command : command to connect to serial port, the port number here matches the ser2net.conf file.

     • resets_after_flash : Not used/generated - some newer daplink firmware on the FRDM-K64F does not reset after the board is flashed.  If you have such a board you'll need to clear this flag.  The best way to determine if you need this is to try the directions without it set and see if they succeed or not.

       Code Block
       language yml linenumbers true
       {% extends 'frdm-k64f.jinja2' %} {% set board_id = '0240000031754e45001c0019948500046461000097969900' %} {% set usb_mass_device = '/dev/disk/by-id/usb-MBED_VFS_0240000031754e45001c0019948500046461000097969900-0:0' %} {% set connection_command = 'telnet ser2net 5001' %}

       
       

5. Set the device dictionary

   Because of the client/server nature of Lava we need to tell the server to update the device dictionary for our specific board with the parameters for the board.  We utilize lavacli for this purpose.  The device dictionary is kept by the lava server and a full dictionary that is composed of the device-type template + the board specific dictionary are sent to the lava dispatcher on every job that is submitted.  Thus any updates to the dictionary for a given board will take effect for any future job submissions.

   Code Block
   language bash
   lavacli -i dispatcher devices dict set testfrdm-k64f-frdm01 board.jinja2

   
   

6. Restart ser2net

   Since we updated the ser2net.conf file we need to send a SIGHUP (-1) signal to the ser2net daemon to cause it to re-read the config file.

   Code Block
   language bash
   docker exec -it lava-ser2net sh -c 'kill -1 `cat /var/run/ser2net.pid`'

   
   

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You then need to bind your  host certificates to container by adding following line in lite-lava-docker-compose/docker-compose.yaml:

  lava-master:
    container_name: lava-master
    image: ${DC_SERVER_IMAGE}
    volumes:
    ...
    - /usr/local/share/ca-certificates:/usr/local/share/ca-certificates:ro

Then, run the following command in the container and go back to job start step.

update-ca-certificates

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