CloudMonitor plans to gradually update the source_ip field in the monitoring metric AlarmIPCount for Simple Log Service (SLS) in the US (Silicon Valley), US (Virginia), and US (Atlanta) regions during the period from September 4, 2025, 00:00:00 to September 10, 2025, 00:00:00 (UTC+8). After the change, the source_ip value in these regions will be set to localhost instead of the actual source IP address. This change will affect data query and statistical results that rely on this field, but all other functionalities will remain unaffected.

Additionally, during the service maintenance and upgrade window, monitoring metrics for Alibaba Cloud Log Service (SLS) in the US (Silicon Valley), US (Virginia), and US (Atlanta) regions may experience 1–3 minutes of data fluctuations.

Scheduled Maintenance Windows (UTC+8):

• US (Atlanta): September 4, 2025, 14:00:00 – 20:00:00
• US (Virginia): September 5, 2025, 14:00:00 – 20:00:00
• US (Silicon Valley): September 8–9, 2025, 14:00:00 – 20:00:00

We apologize for any inconvenience caused by this upgrade. If you have any questions, please feel free to contact us at any time via support tickets or our customer service hotline.