You can monitor the health for NSX-T with the SDDC Health Monitoring Solution.

Table 1. Resources Monitored from NSX-T
Resource Description
Logical Switches Monitors admin state, replication mode, transport zone id, and vni of the logical switches
Controller Cluster Monitors the deployed cluster node count for HA and maintains quorum
Controller Nodes Monitors node connectivity with the controller cluster and manager node
Edge Nodes Monitors edge node running state and its connectivity with the controller cluster and manager node
NSX-T Management Services Monitors the following services:
  • nsx-message-bus
  • liagent
  • ntp
  • snmp
  • install-upgrade
  • search
  • http
  • syslog
  • mgmt.-plane-bus
  • ssh
  • nsx-uprade-agent
  • node-mgmt
  • cm-inventory
  • manager
T0 Router Service Monitors static route, NAT, BGP, BFD, and route redistribution services
T1 Router Service Monitors static route, NAT, and route advertisement services
Logical Routers Monitors failover mode, high availability mode, router type, and edge cluster id
Edge Clusters Monitors edge cluster id and member type
Firewall Sections Monitors firewall rule count and state
Transport Zones Monitors switch modes