Hi, maybe you should do virsh net-undefine default virsh net-destroy default And maybe there is some change in Libvirt and ovirt-hosted-engine-cleanup doesn’t cleanup default network (which results in virbr0 interface) (and at the same time this Ansible code is not idempotent) BR, Konstantin P.S. Sorry, I will top-post… Von: lejeczek via Users <users@ovirt.org> Antworten an: lejeczek <peljasz@yahoo.co.uk> Datum: Donnerstag, 11. Mai 2023 um 21:29 An: "users@ovirt.org" <users@ovirt.org> Betreff: [ovirt-users] Re: engine setup fails: error creating bridge interface virbr0: File exists - ? On 11/05/2023 18:18, Volenbovskyi, Konstantin wrote: Hi, Is it actually first attempt to install HE? Or maybe you ran into some (different) problem and this is like second (third, fourth…) attempt. While installation script takes care of some cleanup, I would say that you should consider doing ovirt-hosted-engine-cleanup ,checking that virbr0 is absent in ‘ip a’ output and trying once again BR, Konstantin Von: lejeczek via Users <users@ovirt.org><mailto:users@ovirt.org> Antworten an: lejeczek <peljasz@yahoo.co.uk><mailto:peljasz@yahoo.co.uk> Datum: Donnerstag, 11. Mai 2023 um 13:25 An: "users@ovirt.org"<mailto:users@ovirt.org> <users@ovirt.org><mailto:users@ovirt.org> Betreff: [ovirt-users] engine setup fails: error creating bridge interface virbr0: File exists - ? Hi guys. I'm trying to setup the engine on the latest stable ovirt node(in a VM), so a clean, vanilla-default system. -> $ hosted-engine --deploy --4 ... [ INFO ] TASK [ovirt.ovirt.hosted_engine_setup : Activate default libvirt network] [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "cmd": ["virsh", "net-start", "default"], "delta": "0:00:00.042134", "end": "2023-05-11 11:08:59.248405", "msg": "non-zero return code", "rc": 1, "start": "2023-05-11 11:08:59.206271", "stderr": "error: Failed to start network default\nerror: error creating bridge interface virbr0: File exists", "stderr_lines": ["error: Failed to start network default", "error: error creating bridge interface virbr0: File exists"], "stdout": "", "stdout_lines": []} [ ERROR ] Failed to execute stage 'Closing up': Failed getting local_vm_dir ... Any & all suggestions on how to fix/troubleshoot this are much appreciated. many thanks, L. No, it is a clean install of oVirt node in a KVM guest/VM. All I do in the node is I configure two ifaces and both are "regular" ethernets, then I start HE setup. Bare-metal host is Centos 9 Stream with everything up-to-dayte off the distro repos. I'd think this should be easily reproducible. ps. please keep replies to the bottom - this is not a conversion between two of us nor any two persons, Mailing to list - think of it a book, which always reads top-to-bottom. many thanks, L.