NSX upgrade precheck error NSX Edge detects pool members are DOWN

Products

• VMware NSX

Issue/Introduction

NSX upgrade precheck shows following error 

Error message

"The load balancer ####-####-###-###-#/### status is down"

 

 

Environment

VMware NSX 

Cause

Unhealthy state of pool members

Resolution

Consult the load balancer pool to determine which members are down by invoking the NSX CLI command

get load-balancer <lb-uuid> pool <pool-uuid> status

API

GET '/policy/api/infra/lb-service/<lb-service-id>/lb-pools/detailed-status'

if DOWN or UNKNOWN is reported, verify the pool member.

Perform following actions

1. Check network connectivity from the load balancer to the impacted pool members. 
2. Validate application health of each pool member.
3. Validate the health of each pool member using the configured monitor

Validate the network connectivity, remediate the issue by rebooting the pool member or make the edge node enter maintenance mode then exit maintenance mode.