Start Cluster Failed

[Christian_Garimberti]

Hi Guys, 

On my Vred pro 2024 the cluster does not start anymore.

Also deleting the config and creating a new one with only the localhost give me the same errors.

i tried removing all the older versions (2023.4), the new 2024, and reinstalling the 2024.

But nothing change.

I checked the service and it seems to be ok

This happens an all the 3 workstation i am testing.

Any ideas?

Best

Chris

[seiferp · Accepted solution]

Hi Chris,

two things that have been changed with 2024 and must be considered for the future:

Python Sandbox
To avoid the execution of python commands that can call arbitrary operating system commands during file load we implemented a Python Sandbox that can be configured in the Preferences > Script dialog. By default the Sandbox is enabled and File IO, network communication and starting new processes is disabled. The Sandbox can be forced to be enabled by setting the environment variable VRED_SECURE_PYTHON. In addition it is possible to configure exceptions for Python- Modules and Functions.

Cluster Service
VRED uses the program VREDClusterService to provide access to services over the network. We have changed the Cluster Service Configuration to only allow VRED processes to access this functionality and eliminate any security vulnerabilities. As a result, the Status Page, Cluster Rendering, Cluster Manger, Cluster Queue, Server Node, Collaboration and VRPN Server is disabled/blocked by default, and a warning appears when it is enabled.

The setup tool VREDClusterSetup can be used to enable the used services and to configure, which hosts are allowed to use those services. In addition this tool can show log messages or activate and deactivate the windows service. Changes to the configuration file are immediately used after saving the file. A restart of the cluster service is not necessary.

Hope this helps

Pascal

[seiferp · Accepted solution]

The VREDClusterSetup tool can be found in your install folder

[Christian_Garimberti]

Hi Pascal, configuring with the VREDClusterSetup solved.

For my setup was enough to activate the Cluster Rendering

Thank You

I will soon check the python sandbox with my scripts.

Best

Chris

[mike_jupp]

Hi Pascal, is it easy to implement these updates on a Linux cluster with no GUI?

[seiferp]

@mike_jupp Please see the online documentation for further instruction on how to setup the Linux Cluster

• Cluster Service Configuration
• Cluster Setup Tool

[mike_jupp]

Thank Pascal, we are still having issues with disabling the sandbox restrictions in Linux. Can you send me detailed instructions of the correct syntax of the command and where it needs to be set (environment variable or command line)

In addition to the preferences, the sandbox can also be controlled with command line options and an environment variable.

• Use -insecure_python to completely switch off the sandbox.
• Use -force_secure_python to force the sandbox to be switched on.
• Set the environment variable, VRED_SECURE_PYTHON, to force the sandbox to be switched on.
•  

[xajuan_smithM829N]

we turn the switch on with 1 or 0 or true or false in the variable?

[Christian_Garimberti]

Hi, like written in the help, VRED_SECURE_PYTHON force the python sandbox with any value.

 https://help.autodesk.com/view/VREDPRODUCTS/2024/ENU/?guid=VRED_Python_Documentation_EnvironmentVari...

Best

Chris