Why does the MATLAB Parallel Server status in the Admin Center show as unavailable after I have started the MATLAB Parallel Server services?

Why does the MATLAB Parallel Server status in the Admin Center show as unavailable after I have started the MATLAB Parallel Server services?

Answer 1

[MathWorks Support Team]

This is most likely caused by a DNS issue where the Hostname is not getting resolved. When a connection test is performed an error similar to the one below will be displayed :

ERROR: "java.net.UnknownHostException: The Hostname (BGL-RPADIYAT.ad.mathworks.com) could not be resolved. Set the Hostname manually in the mjs_def file and restart the mjs service"

To resolve this issue, please follow the below steps:

1. Stop the MJS Services. You can do so in the Windows Services or use the following commands in a Terminal for non-Windows machines\n

   cd $MATLAB\toolbox\parallel\bin
   ./mjs stop

2. Navigate to the mjs_def file.
3. To locate the mjs_def file navigate to $MATLAB/toolbox/parallel/bin (where $MATLAB represents the folder where MATLAB is installed).
4. Open this file with a text editor and modify the field "set HOSTNAME=%strHostname%.%strDomain%"
5. Replace the default value with the Hostname,
6. Restart the MATLAB Parallel Server services. You can do so in the Windows Services or use the following commands in a Terminal for non-Windows machines\n

   cd $MATLAB\toolbox\parallel\bin
   ./mjs start

7. Update the Admin Center. 

This should resolve the issue.