Navigate to Host > Manage > Services > write syslog on search bar. Edit Syslog.global.logHost and write Logsign IP address like; udp://<Logsign_IP>:514
Navigate to Host > Manage > Services > write syslog on search bar. Restart vmsyslogd service.
Go to Logsign and navigate Integration > Data Collection > Click +Device Button.
Add EsXi like below screenshot;
Save it after fill mandatory sections.
After these configurations, you can see EsXi logs on search screen.