Zebrunner Device Farm (Android and iOS agent)

Feel free to support the development with a donation for the next improvements.

Hardware requirements

	Requirements
Operating System	Ubuntu 16.04, 18.04, 20.04, 21.04, 22.04 Linux CentOS 7+ Amazon Linux2 MacOS (Ventura)
CPU	8+ Cores
Memory	32 Gb RAM
Free space	SSD 128Gb+ of free space

Software prerequisites

• Install docker (Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04, Amazon Linux 2, Redhat/Cent OS).
• Install 2.9.6+ ansible (Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04).
• MacOS: install and authorize go-ios utility 1.0.121+
• MacOS: install socat utility to share usbmuxd websocket into the device containers

  valid path to socat binary should be /usr/local/bin/socat

• MacOS: install jq utility

Clone and setup

• Clone mcloud-agent repository and execute setup procedure

  git clone https://github.com/zebrunner/mcloud-agent.git
  cd mcloud-agent
  ./zebrunner.sh setup
  

Run ansible playbook

• [Optional] To enable opencv support append -opencv5.6.0 postfix to the APPIUM_VERSION in the ./defaults/main.yml:

  APPIUM_VERSION: 2.0-opencv5.6.0
  

  Full list of supported appium+opencv images can be found here: https://gallery.ecr.aws/zebrunner/appium

Linux OS

• update roles/devices/vars/main.yml file according to the obligatory/optional comments inside.

  Register all whitelisted Android and iOS devices with their udids!

• Run ansible-playbook script to download the required components and set up udev rules:

  ansible-playbook -vvv -i hosts devices.yml
  

  To reregister the devices list only, you can use the following command:

  ansible-playbook -vvv -i hosts devices.yml --tag registerDevices
  

  To provide extra arguments including sudo permissions, you can use the below command:

  ansible-playbook -vvv -i hosts --user=USERNAME --extra-vars "ansible_sudo_pass=PSWD" devices.yml
  

• Devices management script is deployed to /usr/local/bin/zebrunner-farm.
• Udev rules with whitelisted devices are in /etc/udev/rules.d/90_mcloud.rules.
• Whitelisted devices properties are in /usr/local/bin/mcloud-devices.txt.
• Usbmuxd service is stopped and masked (disabled).
• [Optional] Register@reboot /usr/local/bin/zebrunner-farm restart via crontab to forcibly restart containers on reboot
• [Optional] Increased fs.inotify.max_user_instances to workaround #328

  sudo sysctl fs.inotify.max_user_instances=2048

Mac OS

• update roles/mac-devices/vars/main.yml file according to the obligatory/optional comments inside.

  Register all whitelisted iOS devices (phones, tablets or TVes) with their udids! Important! Only iOS devices supported on MacOS!

• Run ansible-playbook script to download the required components and set up udev rules:

  ansible-playbook -vvv -i hosts mac-devices.yml
  

  To reregister the devices list only, you can use the following command:

  ansible-playbook -vvv -i hosts mac-devices.yml --tag registerDevices
  

  To provide extra arguments including sudo permissions, you can use the below command:

  ansible-playbook -vvv -i hosts --user=USERNAME --extra-vars "ansible_sudo_pass=PSWD" mac-devices.yml
  

• Devices management script is deployed to /usr/local/bin/zebrunner-farm.
• Whitelisted devices properties are in /usr/local/bin/mcloud-devices.txt.
• Deployed and loaded $HOME/Library/LaunchAgents/ZebrunnerUsbmuxd.plist to share usbmuxd into the device containers
• Deployed $HOME/Library/LaunchAgents/ZebrunnerDevicesListener.plist to load and manage iOS devices connect/disconnect automatically

Usage

Android devices

• Enable the Developer Option and USB Debugging for each Android device.
• Connect an Android device physically to a USB direct port or through the hub.
• For the 1st connection, trust the device by picking "always trust..." on the device.

iOS devices

Automation steps

• Enable Settings -> Developer -> Enable UI Automation.

• Settings -> Safari -> Advanced -> Web Inspector.

• Enable Siri.

• Disable screen lock:

  Phone and Tablet: Settings->Lock screen->Turn display off when inactive->select Never

  Apple TV: Settings->General->Sleep after->Select never

Build WebDriverAgent.ipa

You need an Apple Developer account to sign in and build WebDriverAgent.

1. Open WebDriverAgent.xcodeproj in Xcode.
2. Ensure a team is selected before building the application. To do this, go to Targets and select each target (one at a time). There should be a field for assigning team certificates to the target.
3. Remove your WebDriverAgent folder from DerivedData and run Clean build folder (just in case).
4. Build the application by selecting the WebDriverAgentRunner target and build for Generic iOS Device. Run Product -> Build for testing. This will create a Products/Debug-iphoneos in the specified project directory.
   Example: /Users/$USER/Library/Developer/Xcode/DerivedData/WebDriverAgent-dzxbpamuepiwamhdbyvyfkbecyer/Build/Products/Debug-iphoneos
5. Go to the "Products/Debug-iphoneos" directory and run: mkdir Payload
6. Copy the WebDriverAgentRunner-Runner.app to the Payload directory: cp -r WebDriverAgentRunner-Runner.app Payload
7. Finally, zip up the project as an *.ipa file: zip -r WebDriverAgent.ipa ./Payload

   Make sure to specify relative ./Payload to archive only Payload folder content

8. Share built ipa via WDA_FILE variable in roles/devices/vars/main.yml file.

   to override WDA_FILE artifacts per each device use wda_file and wda_bundleid iOS device properties and re-execute ansible playbook.

SmartTestFarm

• Open in your browser http://<PUBLIC_IP>/stf, authenticate yourself based on preconfigured auth system.
• The connected device should be available in STF.
• Disconnect the device from the server. Device containers will be removed asap, then, in 15-30 sec, the device should change the state in STF to disconnected as well.
• Use different commands from ./zebrunner.sh start/stop/restart to manage the devices.

  Run ./zebrunner.sh to see available options.

Troubleshooting

Follow the below algorithm to identify any configuration issues with MCloud agent:

• Enable the debug log level for udev rules: sudo udevadm control --log-priority=debug.
• Inspect syslog to check if the zebrunner-farm shell script executed on every whitelisted device is able to connect/disconnect:

  tail -f /var/log/syslog | grep zebrunner-farm
  

• If there are no updates during connection/disconnection, please, verify the correctness of:
  • device udid values,
  • presence of /usr/local/bin/zebrunner-farm,
  • correctness of /usr/local/bin/mcloud-devices.txt and /etc/udev/rules.d/90_mcloud.rules files.
• Read carefully the zebrunner-farm output in syslog to identify the exact failure during containers creation.
• Analyze device container logs if the status is not healthy:

  docker ps -a | grep device
  // appium and WebDriverAgent for iOS container:
  docker logs -f device-<Name>-<udid>-appium
  // STF provider container:
  docker logs -f device-<Name>-<udid>
  // artifacts uploader container:
  docker logs -f device-<Name>-<udid>-uploader
  

Documentation and free support

• Zebrunner PRO
• Zebrunner CE
• Zebrunner Reporting
• Carina Guide
• Demo Project
• Telegram Channel

License

Code - Apache Software License v2.0

Documentation and Site - Creative Commons Attribution 4.0 International License