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How to forcibly delete an NSX-T 3 Segment

I recently ran in to a problem where i couldnt delete an NSX segment so i went exploring the API. The API guide can be found here

The method used is delete policy/api/v1/infra/segments/{segment-id}?force=true

It would look like this in Postman:

To list the segments we can use a get request towards /policy/api/v1/infra/segments/

Removing NSX stale packages from ESXi host

I recently ran in to a problem where i wanted to perform a clean configuration of one of my ESXi hosts from an NSX perspective, however i ran in to a problem where NSX was reporting that the packages are already installed. To fix the issue i had to run the following to list the packages installed:

esxcli software vib list | grep -i nsx

Once i had the list all i had to do is uninstall them using:

esxcli software vib remove -n packagename1 -n packagename2 ...

Once the uninstall was complete i was able to redeploy NSX from the NSX Manager

Extracting SSL Thumbprint

I recently ran in to an issue where i had to re-register my NSX server with vIDM.

The ask was to extract the Thumbprint from vIDM. The command i ran to extract it was:

echo -n | openssl s_client -connect hostname:443 2>/dev/null | openssl x509 -noout -fingerprint -sha256

This can be used across multiple products where the Thumbprint needs to be extracted

NSX 2.5.0 to NSX 2.5.1 fails with error “restart service install-upgrade” on the NSX Manager.

I`ve recently ran through a problem when trying to upgrade NSX-T from version 2.5.0 to 2.5.1. When using the Upgrade function within the UI i was getting the following error:

This page is only available on the NSX Manager where Upgrade Coordinator is running. To configure the service, run the command “restart service install-upgrade” on the NSX Manager.

White checking the status of the service the service seemed to be running with no issues. I also checked the release notes for a couple of releases back and i found a similar issue in the release notes for the 2.3 release

Due to my install being a home lab i could not contact support. If you are experiencing this issue i would strongly advise to contact support before continuing further. VMware support contact information can be found here:

White reading the NSX-T 2.5.1 Upgrade guide from vmware documentation at page 22 i stumbled on instructions to upgrade the CSM. The instructions reference a .nub file but with no instructions on how to retrieve it. Based on whats available on the vmware download portal i was able to find a .mub file.

In order to bypass the error i was experiencing i downloaded the 2.5.1 version of the .mub file from vmware download portal.

After downloading the .mub file i used an unrachiver in my case 7-zip trying to extract an archive from the .mub file. Ive found that the .mub file included a .tar.gz archive and a .sig file. After extracting the tar.gz archive i was presented with a number of folders that included the VMware-NSX-unified-appliance-<version>.nub file i was looking for.

The file should be under Manager\nub. Once extracted it should be uploaded to /image/vmware/nsx/file-store/ on the nsx manager server

Verify the upgrade bundle by running: verify upgrade-bundle VMware-NSX-unified-appliance-<version> as the admin user. The output in my case was

verify upgrade-bundle VMware-NSX-unified-appliance-
Checking upgrade bundle /var/vmware/nsx/file-store/VMware-NSX-unified-appliance- contents
Verifying bundle VMware-NSX-unified-appliance- with signature VMware-NSX-unified-appliance-
Moving bundle to /image/VMware-NSX-unified-appliance-
Extracting bundle payload
Successfully verified upgrade bundle
Bundle manifest:
appliance_type: ‘nsx-unified-appliance’
version: ‘’
os_image_path: ‘files/nsx-root.squashfs’
os_image_md5_path: ‘files/nsx-root.squashfs.md5’
Current upgrade info:
“info”: “”,
“body”: {
“meta”: {
“from_version”: “”,
“old_config_dev”: “/dev/mapper/nsx-config”,
“to_version”: “”,
“new_config_dev”: “/dev/mapper/nsx-config__bak”,
“old_os_dev”: “/dev/sda2”,
“bundle_path”: “/image/VMware-NSX-unified-appliance-”,
“new_os_dev”: “/dev/sda3”
“history”: []
“state”: 1,
“state_text”: “CMD_SUCCESS”

The next step was to upgrade using the bundle:

start upgrade-bundle VMware-NSX-unified-appliance- playbook VMware-NSX-manager-

Node Upgrade is in progress. Please do not make any changes, until
the upgrade operation is complete.

2020-04-20 01:03:25,418 – Validating playbook /var/vmware/nsx/file-store/VMware-NSX-manager-
2020-04-20 01:03:25,492 – Running “unregister_ccp” (step 1 of 13)
2020-04-20 01:03:30,930 – Running “shutdown_manager” (step 2 of 13)
2020-04-20 01:05:18,077 – Running “install_os” (step 3 of 13)
2020-04-20 01:06:14,179 – Running “migrate_manager_config” (step 4 of 13)
2020-04-20 01:06:17,657 – Running “switch_os” (step 5 of 13)
2020-04-20 01:06:30,330 –

System will now reboot (step 6 of 13)
“info”: “”,
“body”: null,
“state”: 1,
“state_text”: “CMD_SUCCESS”