[NSX-T] Stale logical-port(s) still connected in NSX-T 3.x

Issue

I was cleaning up a customer's NSX-T configuration to bring some changes, when I saw a lot of logical-ports still connected, more than hundred even if VM was no more present on vCenter.

Solution

I immediately thought of creating a script with rest APIs calls to remove the logical ports from NSX-T Manager. It is possible to find all the NSX-T API calls here.

For rest APIs calls within the bash script I will be using cURL with the suggestions provided here.

First, let's see the rest APIs to use:

1. to retrieve the IDs of the Logical Ports
   
2. to delete the connection
   

To get the list of Logical-Ports:
GET /api/v1/logical-ports

Below how it looks the command line ...

# lorenzo@ubuntu:~$ curl -ksn -X GET https://{NSX-T MANAGER IP}/api/v1/logical-ports 

... combining to the previous line the jq command and sed, we can extract only the ID field of our interst.

# lorenzo@ubuntu:~$ curl -ksn -X GET https://{NSX-T MANAGER IP}/api/v1/logical-ports |  jq '.results[] | .id' | sed 's/"//g' 

Outcome in the image below.

To get the deletion of the Logical-Port:
DELETE /api/v1/logical-ports/<LogicalPort-ID>?detach=true

We now have all the elements to build the bash script, which looks like the one below...

WARNING: It provided witout warranty. Use it at your own risk and only if you are aware of what you are doing

#!/bin/bash
curl -ksn -X GET https://{NSX-T MANAGER IP}/api/v1/logical-ports |  jq '.results[] | .id' | sed 's/"//g' | while read -r LP_ID
do
 curl -ksn -X DELETE https://{NSX-T MANAGER IP}/api/v1/logical-ports/${LP_ID}?detach=true
 echo " -> "${LP_ID}" removed "
done

... launch the script as below ...

lorenzo@ubuntu:~$ bash remove_all_logical_port.sh 

... the result is the following. All Logial-Ports have been cancelled.

That's it.