Server Installation

The Scyld Cloud Workstation server can be installed on the following operating systems:

  • CentOS 7

  • Rocky Linux 8 and 9

  • Windows 10, 11, and Windows Server 2019

  • Windows Server 2022 (server-side only)

  • MacOS Monterey 12 to MacOS Sonoma 14

  • Ubuntu 20, 22 and 24

Required Files

Installation packages and documentation can be downloaded from: https://updates.penguincomputing.com/scw/download/. CentOS and RHEL users should add the repository as a YUM repo using the OS-specific instructions that follow.

Installation of the Scyld Cloud Workstation server requires the following files:

  • The Scyld Cloud Workstation server installation package for your operating system:

    • CentOS 7: scyld-cloud-workstation-14.0.0-0.el7.x86_64.rpm

    • Rocky Linux 8: scyld-cloud-workstation-14.0.0-0.el8.x86_64.rpm

    • Rocky Linux 9: scyld-cloud-workstation-14.0.0-0.el9.x86_64.rpm

    • Ubuntu 20: scyld-cloud-workstation_14.0.0.0-0ubuntu1.20_amd64.deb

    • Ubuntu 22: scyld-cloud-workstation_14.0.0.0-0ubuntu1.22_amd64.deb

    • Ubuntu 24: scyld-cloud-workstation_14.0.0.0-0ubuntu1.24_amd64.deb

    • Windows 10, 11, and Windows Server 2019, 2022: Scyld Cloud Workstation-14.0.0.0.msi

    • MacOS Monterey 12 to MacOS Sonoma 14: scyld-cloud-workstation-14.0.0.0.pkg

  • One of the following:

    • A trial license file (scyld-cloud-workstation.lic)

    • A floating license file (scyld-flexlm.lic) and the license server (Scyld FlexLM).

Installing the Server on CentOS 7

Follow the steps below to install Scyld Cloud Workstation, replace the default SSL key and certificate files, and install the license file. After a service restart, you should be able to sign in with standard OS credentials.

  1. Use the wget command to install the Scyld Cloud Workstation YUM repository for CentOS 7.

    % sudo wget https://updates.penguincomputing.com/scw/scw-el7.repo -P /etc/yum.repos.d

  2. Use the yum install command to install scyld-cloud-workstation.

    % sudo yum install -y scyld-cloud-workstation

    The installer does the following:

    • Installs Scyld Cloud Workstation files to /opt/scyld-cloud-workstation

    • Installs scyld-cloud-workstation.service to /lib/systemd/system/

    • Reloads the systemd manager configuration using systemctl daemon-reload

    • Enables the unit file with systemctl enable scyld-cloud-workstation.service

  3. If your server’s domain has a trusted SSL certificate, open the configuration file (/opt/scyld-cloud-workstation/scyld-cloud-workstation.xml) and set the value of openssl.server.privateKeyFile and openssl.server.certificateFile to its path. Using a trusted SSL certificate is recommended for maximum security.

  4. Install the license.

    • If you have a trial license (scyld-cloud-workstation.lic), copy it into /opt/scyld-cloud-workstation/bin.

    • If you have a floating license (scyld-flexlm.lic), proceed to Flexera License Management for instructions on installing Scyld FlexLM.

  5. Verify that your firewall rules allow traffic over HTTPS (port 443).

  6. Use the systemctl restart command to restart the service:

    % sudo systemctl restart scyld-cloud-workstation.service

  7. OPTIONAL: To enable USB Forwarding features, see Installing Server-USB Module on CentOS 7.

Scyld Cloud Workstation should now be reachable over HTTPS at your server’s hostname or IP address. For advanced configuration options, please see Setup.

Installing Server-USB Module on CentOS 7

USB devices can be forwarded between native clients and remote servers that meet the following requirements:

  1. The server’s license file must have a valid ‘scw-usb’ entitlement. If you do not see this entitlement in your license file, please contact Penguin Computing sales for more information.

  2. The Server-USB module must be installed on the remote server.

  3. The Client-USB module must be installed on the client side. See Installing Client-USB Module on the Client for more information on this step.

To install the Server-USB modules on the remote server:

  1. Use the yum command to install scyld-cloud-workstation-server-usb-module.

    % sudo yum install -y scyld-cloud-workstation-server-usb-module

  2. Use the systemctl restart command to restart the service:

    % sudo systemctl restart scyld-cloud-workstation.service

Installing the Server on Rocky Linux

Follow the steps below to install Scyld Cloud Workstation, replace the default SSL key and certificate files, install the license file, and change your X server from XWayland to Xorg. After a service restart, you should be able to sign in with standard OS credentials.

  1. Use the wget command to install the Scyld Cloud Workstation YUM repository for your version of Rocky Linux:

    % ## Rocky Linux 8 only
% sudo wget https://updates.penguincomputing.com/scw/scw-el8.repo -P /etc/yum.repos.d

% ## Rocky Linux 9 only
% sudo wget https://updates.penguincomputing.com/scw/scw-el9.repo -P /etc/yum.repos.d

  2. Use the yum install command to install scyld-cloud-workstation.

    % sudo yum install -y scyld-cloud-workstation

    The installer does the following:

    • Installs Scyld Cloud Workstation files to /opt/scyld-cloud-workstation

    • Installs scyld-cloud-workstation.service to /lib/systemd/system/

    • Reloads the systemd manager configuration using systemctl daemon-reload

    • Enables the unit file with systemctl enable scyld-cloud-workstation.service

  3. If you have a trusted SSL certificate for your server’s domain, open the configuration file (/opt/scyld-cloud-workstation/scyld-cloud-workstation.xml) and set the value of openssl.server.privateKeyFile and openssl.server.certificateFile to its path. Using a trusted SSL certificate is recommended for maximum security.

  4. Install the license.

    • If you have a trial license (scyld-cloud-workstation.lic), copy it into /opt/scyld-cloud-workstation/bin.

    • If you have a floating license (scyld-flexlm.lic), proceed to Flexera License Management for instructions on installing Scyld FlexLM.

  5. Verify that your firewall rules allow traffic over HTTPS (port 443).

  6. ONLY IF you are using XWayland as your X server (enabled by default in Rocky Linux), enable Xorg by following these steps:

    1. Open editor to open: /etc/gdm/custom.conf

    2. Look for the lines below:

      [daemon]
# Uncoment the line below to force the login screen to use Xorg
#WaylandEnable=false

    3. Uncomment (remove the ‘#’) preceeding the ‘WaylandEnable’ variable.

    4. Save the file and reboot the system. The service will start after the reboot.

  7. Use the systemctl restart command to restart the service:

    % sudo systemctl restart scyld-cloud-workstation.service

  8. OPTIONAL: To enable USB Forwarding features, see Installing Server-USB Module on Rocky Linux.

Scyld Cloud Workstation should now be reachable over HTTPS at your server’s hostname or IP address. For advanced configuration options, please see Setup.

Installing Server-USB Module on Rocky Linux

USB devices can be forwarded between native clients and remote servers that meet the following requirements:

  1. The server’s license file must have a valid ‘scw-usb’ entitlement. If you do not see this entitlement in your license file, please contact Penguin Computing sales for more information.

  2. The Server-USB module must be installed on the remote server.

  3. The Client-USB module must be installed on the client side. See Installing Client-USB Module on the Client for more information on this step.

To install the Server-USB modules:

  1. Use the yum command to install scyld-cloud-workstation-server-usb-module.

    % sudo yum install -y scyld-cloud-workstation-server-usb-module

  2. Use the systemctl restart command to restart the service:

    % sudo systemctl restart scyld-cloud-workstation.service

Installing the Server on Windows

Note

For virt-manager users: virt-manager’s graphical console will no longer work after installing the NVIDIA GRID driver and restarting Windows.

To get the virt-manager graphical console to work again, start the Windows VM in ‘Safe Mode’ by restarting the VM, commanding it to “Force Off”, and restarting the VM again. Select “Safe Mode with Networking” from the menu that appears.

  1. Download Scyld Cloud Workstation-14.0.0.0.msi from https://updates.penguincomputing.com/scw/download/

  2. Double-click on the Scyld Cloud Workstation-14.0.0.0.msi installer.

  3. Follow the instructions in the GUI.

  4. If your server’s domain has a trusted SSL certificate, open the configuration file (C:\Program Files\Penguin Computing\Scyld Cloud Workstation\scyld-cloud-workstation.xml) and set the value of openssl.server.privateKeyFile and openssl.server.certificateFile to its path. Using a trusted SSL certificate is recommended for maximum security.

  5. Install the license.

    • If you have a trial license (scyld-cloud-workstation.lic), copy it into C:\Program Files\Penguin Computing\Scyld Cloud Workstation.

    • If you have a floating license (scyld-flexlm.lic), proceed to Flexera License Management for instructions on installing Scyld FlexLM.

  6. OPTIONAL: To enable USB Forwarding features, see Installing Server-USB Module on Windows.

Scyld Cloud Workstation should now be reachable over HTTPS at your server’s hostname or IP address. For advanced configuration options, please see Setup.

Installing Server-USB Module on Windows

USB devices can be forwarded between native clients and remote servers that meet the following requirements:

  1. The server’s license file must have a valid ‘scw-usb’ entitlement. If you do not see this entitlement in your license file, please contact Penguin Computing sales for more information.

  2. The Server-USB module must be installed on the remote server.

  3. The Client-USB module must be installed on the client side. See Installing Client-USB Module on the Client for more information on this step.

To install the Server-USB modules on the remote server:

  1. Download Scyld Cloud Workstation Server USB Module-14.0.0.0.msi from https://updates.penguincomputing.com/scw/download/

  2. Double-click on the Scyld Cloud Workstation Server USB Module-14.0.0.0.msi installer.

  3. Follow the instructions in the GUI.

Installing the Server on Ubuntu

Follow the steps below to install Scyld Cloud Workstation, replace the default SSL key and certificate files, and install the license file. After a service restart, you should be able to sign in with standard OS credentials.

  1. Download the debian installer for your Ubuntu version from https://updates.penguincomputing.com/scw/download/

    • Ubuntu 20:

      • scyld-cloud-workstation_14.0.0.0-0ubuntu1.20_amd64.deb

    • Ubuntu 22:

      • scyld-cloud-workstation_14.0.0.0-0ubuntu1.22_amd64.deb

  2. Use the apt install command to install the DEB file (adjust the file path if necessary):

    % ## Ubuntu 20 only
% sudo apt install ./scyld-cloud-workstation_14.0.0.0-0ubuntu1.20_amd64.deb

% ## Ubuntu 22 only
% sudo apt install ./scyld-cloud-workstation_14.0.0.0-0ubuntu1.22_amd64.deb

    The installer does the following:

    • Installs Scyld Cloud Workstation files to /opt/scyld-cloud-workstation

    • Installs scyld-cloud-workstation.service to /lib/systemd/system/

    • Reloads the systemd manager configuration using systemctl daemon-reload

    • Enables the unit file with systemctl enable scyld-cloud-workstation.service

  3. If your server’s domain has a trusted SSL certificate, open the configuration file (/opt/scyld-cloud-workstation/scyld-cloud-workstation.xml) and set the value of openssl.server.privateKeyFile and openssl.server.certificateFile to its path. Using a trusted SSL certificate is recommended for maximum security.

  4. Install the license.

    • If you have a trial license (scyld-cloud-workstation.lic), copy it into /opt/scyld-cloud-workstation/bin.

    • If you have a floating license (scyld-flexlm.lic), proceed to Flexera License Management for instructions on installing Scyld FlexLM.

  5. Verify that your firewall rules allow traffic over HTTPS (port 443).

  6. Use the systemctl restart command to restart the service:

    % sudo systemctl restart scyld-cloud-workstation.service

  7. OPTIONAL: To enable USB Forwarding features, see Installing Server-USB Module on Ubuntu.

Scyld Cloud Workstation should now be reachable over HTTPS at your server’s hostname or IP address. For advanced configuration options, please see Setup.

Installing Server-USB Module on Ubuntu

USB devices can be forwarded between native clients and remote servers that meet the following requirements:

  1. The server’s license file must have a valid ‘scw-usb’ entitlement. If you do not see this entitlement in your license file, please contact Penguin Computing sales for more information.

  2. The Server-USB module must be installed on the remote server.

  3. The Client-USB module must be installed on the client side. See Installing Client-USB Module on the Client for more information on this step.

To install the Server-USB modules on the remote server:

  1. Download the debian installer for your Ubuntu version from https://updates.penguincomputing.com/scw/download/

    • Ubuntu 20:

      • scyld-cloud-workstation-server-usb-module_14.0.0.0-0ubuntu1.20_amd64.deb

    • Ubuntu 22:

      • scyld-cloud-workstation-server-usb-module_14.0.0.0-0ubuntu1.22_amd64.deb

  2. Use the apt install command to update the DEB file (adjust the file path if necessary):

    % ## Ubuntu 20
% sudo apt install ./scyld-cloud-workstation-server-usb-module_14.0.0.0-0ubuntu1.20_amd64.deb

% ## Ubuntu 22
% sudo apt install ./scyld-cloud-workstation-server-usb-module_14.0.0.0-0ubuntu1.22_amd64.deb

  3. Use the systemctl restart command to restart the service:

    % sudo systemctl restart scyld-cloud-workstation.service

Installing the Server on MacOS

  1. Download the scyld-cloud-workstation-14.0.0.0.pkg from https://updates.penguincomputing.com/scw/download/

  2. Double-click on scyld-cloud-workstation-14.0.0.0.pkg to launch the installer and follow the GUI instructions.

  3. Click OK when the prompt for microphone access appears.

  4. MacOS Monterey 12 and earlier: Click Open System Preferences when the Screen Recording prompt appears.

    MacOS Ventura 13 and later: Click Open System Settings when the Screen Recording prompt appears.

  5. MacOS Monterey 12 and earlier: Click on the Lock icon in the Security & Privacy dialog and enter your password.

  6. In the menu on the right locate the checkbox labelled scyld-cloud-workstation and make sure this box is checked.

  7. If you do not see a box for scyld-cloud-workstation, click on the + symbol, manually add scyld-cloud-workstation to the list, and then make sure the box is checked.

  8. Repeat steps 4-7 when the prompt for Accessibility Access appears.

  9. If your server’s domain has a trusted SSL certificate, open the configuration file (/Applications/scyld-cloud-workstation.app/Contents/Resources/scyld-cloud-workstation.xml) and set the value of openssl.server.privateKeyFile and openssl.server.certificateFile to its path. Using a trusted SSL certificate is recommended for maximum security.

  10. Install the license.

    • If you have a trial license (scyld-cloud-workstation.lic), copy it into /Applications/scyld-cloud-workstation.app/Contents/Resources.

    • If you have a floating license (scyld-flexlm.lic), proceed to Flexera License Management for instructions on installing Scyld FlexLM.

    Once the license file has been installed, the server will start automatically and be accessible with a web browser or our native client.

  11. OPTIONAL: Proceed to Install BlackHole for MacOS Audio for information on adding audio support.

  12. OPTIONAL: To enable USB Forwarding features, see Installing Server-USB Module on MacOS.

Important

Putting your remote MacOS server to sleep (for example: by closing the lid of the laptop, selecting “Sleep” from the Apple menu) will make Scyld Cloud Workstation inaccessible.

Important

Scyld Cloud Workstation prevents Display Sleep from happening in MacOS using an application called caffeinate. This is to prevent the server from going to sleep.

Scyld Cloud Workstation should now be reachable over HTTPS at your server’s hostname or IP address. For advanced configuration options, please see Setup.

Install BlackHole for MacOS Audio

To add remote audio capture, perform the following steps on your Scyld Cloud Workstation MacOS server:

  1. Download and install BlackHole 0.2.9 from https://existential.audio/blackhole/.

  2. Select BlackHole 16ch as the Sound Output device.

    • MacOS Monterey 12 and earlier: Open System Preferences > Sound > Output and select BlackHole 16ch.

    • MacOS Ventura 13 and later: Open System Settings > Sound > Output and select BlackHole 16ch.

    Note

    Selecting BlackHole 16ch will disable audio playback on Internal Speakers, but this can be changed using the steps above. To change devices more easily, check the Show volume in menu bar box. You can now click on the volume control and select one from the Output Device list.

  3. Add Scyld Cloud Workstation to the Login Items list for each MacOS user.

    • MacOS Monterey 12 and earlier: Open System Preferences > Users & Groups. Select your username and then the Login Items tab. Click on the Lock icon and enter your password. Now click on the + button and use the Finder window to add Scyld Cloud Workstation to the list.

    • MacOS Ventura 13 and later: Open System Settings > General > Login Items. Click on the + button and use the Finder window to add Scyld Cloud Workstation to the list.

  4. Logout of MacOS and log back in.

The steps above will make audio accessible to clients that connect to your Scyld Cloud Workstation MacOS server and click on the audio icon.

Note

More information about BlackHole can be found at: https://github.com/ExistentialAudio/BlackHole

Installing Server-USB Module on MacOS

USB devices can be forwarded between native clients and remote servers that meet the following requirements:

  1. The server’s license file must have a valid ‘scw-usb’ entitlement. If you do not see this entitlement in your license file, please contact Penguin Computing sales for more information.

  2. The Server-USB module must be installed on the remote server.

  3. The Client-USB module must be installed on the client side. See Installing Client-USB Module on the Client for more information on this step.

To install the Server-USB modules on the remote server:

  1. Download scyld-cloud-workstation-server-usb-module-14.0.0.0.pkg from https://updates.penguincomputing.com/scw/download/

  2. Double-click on the scyld-cloud-workstation-server-usb-module-14.0.0.0.pkg installer.

  3. Follow the instructions in the GUI.

Client Installation

Users can connect to the Scyld Cloud Workstation server using commonly available web browsers or the native client, Scyld Cloud Workstation Client. The native client is similar to the web browser in many ways, but it is also capable of faster video frame rates and additional features, such as:

  • USB Forwarding

  • Lossless and Visually Lossless Video

Scyld Cloud Workstation Client can be installed on the following operating systems:

  • CentOS 7

  • Rocky Linux 8 and 9

  • Windows 10, 11, and Windows Server 2019

  • MacOS Big Sur 11 to MacOS Sonoma 14

  • Ubuntu 20 and 22

Web Browser Support

The following commonly available web browsers can be used to get fast access to Scyld Cloud Workstation servers:

  • Chrome 59+

  • FireFox 56+

  • Microsoft Edge Legacy 44.17763.1.0+

  • Microsoft Edge 79+

  • Safari 7+

Note

Chrome provides the best performance of all the web browsers.

Installing the Client

The native client is capable of additional features and faster video frame rates.

  • CentOS 7 users:

    1. Use the wget command to install the Scyld Cloud Workstation YUM repository for CentOS 7.

      % sudo wget https://updates.penguincomputing.com/scw/scw-el7.repo -P /etc/yum.repos.d

    2. Use the yum install command to install scyld-cloud-workstation-client.

      % sudo yum install -y scyld-cloud-workstation-client

  • Rocky Linux 8 users:

    1. Use the wget command to install the Scyld Cloud Workstation YUM repository for Rocky Linux 8.

      % sudo wget https://updates.penguincomputing.com/scw/scw-el8.repo -P /etc/yum.repos.d

    2. Use the yum install command to install scyld-cloud-workstation-client.

      % sudo yum install -y scyld-cloud-workstation-client

  • Rocky Linux 9 users:

    1. Use the wget command to install the Scyld Cloud Workstation YUM repository for Rocky Linux 9.

      % sudo wget https://updates.penguincomputing.com/scw/scw-el9.repo -P /etc/yum.repos.d

    2. Use the yum install command to install scyld-cloud-workstation-client.

      % sudo yum install -y scyld-cloud-workstation-client

  • Windows, MacOS, and Ubuntu users: Download and install the Client installer for your OS from

    https://updates.penguincomputing.com/scw/download/

Installing Client-USB Module on the Client

USB devices can be forwarded between native clients and remote servers that meet the following requirements:

  1. The server’s license file must have a valid ‘scw-usb’ entitlement. If you do not see this entitlement in your license file, please contact Penguin Computing sales for more information.

  2. The Server-USB module must be installed on the remote server.

  3. The Client-USB module must be installed on the client side.

  • CentOS 7 users:

    1. Use the wget command to install the Scyld Cloud Workstation YUM repository for CentOS 7.

      % sudo wget https://updates.penguincomputing.com/scw/scw-el7.repo -P /etc/yum.repos.d

    2. Use the yum install command to install scyld-cloud-workstation-client-usb-module.

      % sudo yum install -y scyld-cloud-workstation-client-usb-module

  • Rocky Linux 8 users:

    1. Use the wget command to install the Scyld Cloud Workstation YUM repository for Rocky Linux 8.

      % sudo wget https://updates.penguincomputing.com/scw/scw-el8.repo -P /etc/yum.repos.d

    2. Use the yum install command to install scyld-cloud-workstation-client-usb-module.

      % sudo yum install -y scyld-cloud-workstation-client-usb-module

  • Rocky Linux 9 users:

    1. Use the wget command to install the Scyld Cloud Workstation YUM repository for Rocky Linux 9.

      % sudo wget https://updates.penguincomputing.com/scw/scw-el9.repo -P /etc/yum.repos.d

    2. Use the yum install command to install scyld-cloud-workstation-client-usb-module.

      % sudo yum install -y scyld-cloud-workstation-client-usb-module

  • Windows, MacOS, and Ubuntu users: Download and install the Client-USB module installer for your OS from

    https://updates.penguincomputing.com/scw/download/