Could not find keytab file: /etc/libvirt/krb5.tab: Permission denied

Issue

• Our logs are filled with error messages triggering automatic responses from our Tivoli monitoring:

May 12 05:00:05 hostname ricci[6396]: [ID - user.notice]  Executing '/usr/bin/virsh nodeinfo'
May 12 05:00:05 hostname libvirtd: [ID - auth.err]  Could not find keytab file: /etc/libvirt/krb5.tab: Permission denied

• when boot guest with qemu-kvm, there is a message:

Mar 17 10:46:26 hostname qemu-kvm: Could not find keytab file: /etc/qemu/krb5.tab: No such file or directory