Use this command to export event logs of the secondary node in the HA cluster. This command should be run on the primary node.
To download the logs, first run the following command to enable file upload:
config system settings
set enable-file-upload enable
Then, go to System > Maintenance > Backup&Restore to download the logs.
diagnose system ha export-eventlog <node-index> <start-time> <end-time>
diagnose system ha export-eventlog 2 29/12/2019:00:00:00 31/12/2019:00:00:00