Diagnostic Archive generation failed

 Problem

After clicking the button “Generate Diagnostic Archive”, the progress reached almost 100% but then failed and no archive was created.

Open

 Solution

There is a way to retrieve the diagnostic archive zip files from the nodes of the broker, if those were generated but failed to get downloaded.

1. Check the hivemq.log file at each cluster node

2. Make sure on every node there is a success log message like the following:
   Node AAAAA:

   INFO - Created diagnostic zip '/opt/hivemq/log/diagnostic/diagnostic-20230501-061447-AAAAA.zip' successfully.

   Node BBBBB:

   INFO - Created diagnostic zip '/opt/hivemq/log/diagnostic/diagnostic-20230501-061447-BBBBB.zip' successfully.

   Node CCCC:

   INFO - Created diagnostic zip '/opt/hivemq/log/diagnostic/diagnostic-20230501-061447-CCCCC.zip' successfully.

3. Download files which have the same date and time from all nodes manually and upload to HiveMQ Support for analysis.

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