Upgrade process from SDDC Manager errors out at NSX-T UC backup stage

Products

• VMware Cloud Foundation

Issue/Introduction

• This is due to the API we are using on NSX-T (/api/v1/cluster?action=backup_to_remote) is blocking and times out after 4 minutes.
   

Symptoms:

• Error in LCM log:

[c.v.e.s.l.p.i.n.s.NsxtUcUpgradeStageRunner,ThreadPoolTaskExecutor-10] NSX-T Management Cluster Backup failed with Exception: java.lang.RuntimeException: Cannot execute request

Environment

VMware Cloud Foundation 3.9.x

Resolution

• Modify LCM configuration to skip NSX-T backup
• Add following to /opt/vmware/lcm/lcm-app/conf/application-prod.properties

lcm.nsxt.backup.skip=true

• Restart LCM
• Perform backup manually from NSX-T manager console
• Start NSX-T upgrade from SDDC Manager