Hi, Did you modify your /etc/sasl2/libvirt.conf, because the update has modify the way to authenticate from md5 to gssapi. If not just change this line : mech_list: gssapi to mech_list: digest-md5 And restart services As mentioned in the libvirt.conf file : # NB, previously DIGEST-MD5 was set as the default mechanism for # libvirt. Per RFC 6331 this is vulnerable to many serious security # flaws and should no longer be used. Thus GSSAPI is now the default. # # To use GSSAPI requires that a libvirtd service principal is # added to the Kerberos server for each host running libvirtd. # This principal needs to be exported to the keytab file listed below Alain Alain VONDRA Chargé d'Exploitation et de Sécurité des Systèmes d'Information Direction Administrative et Financière +33 1 44 39 77 76 UNICEF France 3 rue Duguay Trouin 75006 PARIS www.unicef.fr -----Message d'origine----- De : users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] De la part de Alan Griffiths Envoyé : mercredi 4 octobre 2017 15:50 À : Ovirt Users <users@ovirt.org> Objet : [ovirt-users] Ovirt 4.0 and EL 7.4 Hi, Is 4.0 supported/known to work on CentOS 7.4? I've just tried to upgrade one of the hosts in my lab from 7.3 to 7.4 and now vdsm-network fails to start with vdsm-tool: libvirt: XML-RPC error : authentication failed: authentication failed To even get this far I had to exclude gluster packages as 7.4 introduces 3.8 but ovirt 4.0 repo is still on 3.7. So, more generally. If I'm on ovirt 4.0, gluster 3.7 and EL 7.3. What is the best ordering for getting to ovirt 4.1 and EL 7.4? Thanks, Alan _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users