TKGI cluster fails to find IPBlock in NSX manager, new cluster creation fails

Products

• VMware NSX

Issue/Introduction

• The NSX Manager log indicated that the IP Blocks for pods were deleted, but the corresponding IP pools and logical switches for pods still exist. The following log entries can be found on the NSX Manager appliance at /var/log/syslog:

2025-08-14T11:30:16.204Z INFO providerTaskExecutor-1-3 IpBlockServiceImpl 77678 POOL-MGMT [nsx@6876 comp="nsx-manager" level="INFO" subcomp="manager"] Deleted IP block IpBlock[1.#.#.0/19] with id IpBlock/<UUID>

 

• The new workload creation will fail because the NCP cannot allocate new IP Subnets from the target IP Block

 

Environment

VMware NSX-T Data Center
VMware NSX
NSX-T Plugin (NCP)

Resolution

• If you believe you have encountered this issue, please open a support case with Broadcom Support and refer to this KB article.
  
  
• For more information, see Creating and managing Broadcom support cases.

Workaround: 

Recreate the cluster with new IP block