I should upgrade my libvirt from 5.7 to 6.1 to resole this question ? -----Original Message----- From: Michal Privoznik <mprivozn@xxxxxxxxxx> Sent: Monday, January 4, 2021 5:31 PM To: tommy <sz_cuitao@xxxxxxx>; libvirt-users@xxxxxxxxxx Subject: Re: Get Host Capabilities failed: Internal JSON-RPC error: {'reason': 'internal error: Duplicate key'} On 12/24/20 4:06 AM, tommy wrote: > Hi,everyone: > > > > I got this error in my ovirt env: > > > > VDSM ooengh1.tltd.com command Get Host Capabilities failed: Internal > JSON-RPC error: {'reason': 'internal error: Duplicate key'} I think you're hitting this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1791790 It's fixed in libvirt-6.1.0. Michal