Aria Operations for Logs appliances use a SSL certificate that must be renewed within the certificate's expiration date.
This article explains how to check it from the Aria Operations for Logs Web UI.
Aria Operations for Logs 8.18.x
The procedure is as follows:
1. Log in to Aria Operations for Logs Web UI as admin user
2.Click [Configuration] > [SSL] in the menu pane on the left side
3.Click [VIEW DETAILS...] to display the certificate details, and check the expiration date from "Validity period:"
The following kb 393431 explains how to check the certificate expiration date via command line.
* Aria Operations for Logs UI running in FIPS mode is not accessible after SSL certificate expired (Article ID: 393431)
https://knowledge.broadcom.com/external/article?articleNumber=393431