To collect GI-SVM logs through an API call:

1. Determine the Host MOID:
   1. Open a web browser and browse to https://<vcenter>/mob/.
   2. Log in to vCenter Server with admin credentials.
   3. Click group-d1.
   4. Click datacenter-## in childEntity for the datacenter where the ESXi host resides.
   5. Click group-h## in hostFolder.
   6. Click domain-c## in childEntity for the cluster where the ESXi host resides.
      
      All host MOIDs are listed in the Host section.
      
      Alternatively, you can run these commands in the NSX Manager to find the Host MOID:
      
      For example:
      
      nsxmgr-01a> show cluster all
      
      No. Cluster Name Cluster Id Datacenter Name Firewall Status
      1 RegionA01-COMP01 domain-c26 RegionA01 Enabled
      2 RegionA01-MGMT01 domain-c71 RegionA01 Enabled
      
      nsxmgr-01a> show cluster domain-c26
      
      Datacenter: RegionA01
      Cluster: RegionA01-COMP01
      No. Host Name Host Id Installation Status
      1 esx-01a.corp.local host-29 Ready
      2 esx-02a.corp.local host-31 Ready
      
      Note that, Host ID = MOID.
       
2. To determine the current logging state, run API call:

   GET https://nsxmanager/api/1.0/usvmlogging/host-##/com.vmware.vshield.usvm
   GET https://nsxmanager/api/1.0/usvmlogging/host-##/root
   
   For more information on querying the current logging state, see the NSX vSphere API Guide.

3. To change the current logging state, run API call:

   POST https://nsxmanager/api/1.0/usvmlogging/host-##/changelevel
   
   ## Example to change root logger ##
   
   <?xml version="1.0" encoding="UTF-8" ?>
   <logginglevel>
   <loggerName>root</loggerName>
   <level>DEBUG</level>
   </logginglevel>
   
   ## Example to change com.vmware.vshield.usvm ##
   
   <?xml version="1.0" encoding="UTF-8" ?>
   <logginglevel>
   <loggerName>com.vmware.vshield.usvm</loggerName>
   <level>DEBUG</level>
   </logginglevel>

4. To generate logs, run this command:
   
   curl -k -u admin:password -L -X GET https://NSXMGR_IP/api/1.0/hosts/host-##/techsupportlogs > techsupportlogs.log.gz
   
   Notes:

   • This command generates the GI-SVM logs and saves the file as techsupportlogs.log.gz file.
   • As an alternative, you can use Postman REST API client as the curl API call requires root access privileges to the NSX Manager.
      
     1. Run API call:
        
        GET https://NSXMGR_IP/api/1.0/hosts/host-###/techsupportlogs
         
     2. Select Send and Download.