VMWare ESXi: Could not find a trusted signer

Oggi stavo cercando di aggiornare i driver di un controller Adaptec di un host VMWare ESXi tramite SSH ed ho ottenuto l’errore “Cloud not find a trusted signer”:

# esxcli software vib update -v /tmp/vmware-esxi-drivers-scsi-aacraid-510.5.2.1.41024.-1.1.5.802205.x86_64.vib

[InstallationError]
 ('Adaptec_Inc_bootbank_scsi-aacraid_5.1.5.2.1.41024-1OEM.510.0.0.802205', 'Could not find a trusted signer.')
 vibs = Adaptec_Inc_bootbank_scsi-aacraid_5.1.5.2.1.41024-1OEM.510.0.0.802205
 Please refer to the log file for more details.

per evitare la verifica  della firma e installare l’aggiornamento basta aggiungere ‘–no-sig-check‘:

# esxcli software vib update -v /tmp/vmware-esxi-drivers-scsi-aacraid-510.5.2.1.41024.-1.1.5.802205.x86_64.vib --no-sig-check
Installation Result
 Message: The update completed successfully, but the system needs to be rebooted for the changes to be effective.
 Reboot Required: true
 VIBs Installed: Adaptec_Inc_bootbank_scsi-aacraid_5.1.5.2.1.41024-1OEM.510.0.0.802205
 VIBs Removed: Adaptec_Inc_bootbank_scsi-aacraid_5.1.5.2.1.40301-1OEM.510.0.0.802205
 VIBs Skipped: