Tier-1 Gateways with NAT Enabled false alarm

Products

• VMware NSX

Issue/Introduction

• NSX alarms indicating the number of objects defined in the system for Tier-1 Gateways with NAT Enabled has reached #% which is above the minimum capacity threshold of 70.0%.
• Even after acknowledging the above alarm, the alarm eventually is generated again. 
• On an NSX Manager /var/log/syslog, the following log messages report two different values continuously flapping:

2024-07-15T16:25:15.777Z MONITORING [nsx@6876 comp="nsx-manager" entId=#### eventFeatureName="capacity" eventSev="warning" eventState="On" eventType="minimum_capacity_threshold" level="WARNING" subcomp="manager"] The number of objects defined in the system for Tier-1 Logical Routers with NAT Enabled has reached ## which is above the minimum capacity threshold of 70.0%.

2024-07-15T16:29:15.776Z MONITORING [nsx@6876 comp="nsx-manager" entId=#### eventFeatureName="capacity" eventSev="warning" eventState="Off" eventType="minimum_capacity_threshold" level="WARNING" subcomp="manager"] The number of objects defined in the system for Tier-1 Logical Routers with NAT Enabled has reached ## and is at or below the minimum capacity threshold of 70.0%.

Environment

VMware NSX-T Data Center 3.x

VMware NSX 4.0.x/4.1.x

Cause

This is caused by Policy and Proton reporting two different values, resulting in the alarm continuously flapping.

Resolution

This issue is resolved in NSX Version 4.2.0 and above.