Failed to execute Ansible host-deploy role.

[zhoujinl]

2018-09-08 01:21:54,251Z ERROR [org.ovirt.engine.core.bll.hostdeploy.InstallVdsInternalCommand] (EE-ManagedThreadFactory-engine-Thread-2) [db4c88e0-cd98-4d65-b876-f970ab3c36ec] Host installation failed for host 'b4fa1cb0-b2dc-4b1b-bfd4-21fde0b55e78', '172.21.111.58': Failed to execute Ansible host-deploy role. Please check logs for more details: /var/log/ovirt-engine/host-deploy/ovirt-host-deploy-ansible-20180908012152-172.21.111.58-db4c88e0-cd98-4d65-b876-f970ab3c36ec.log

cat /var/log/ovirt-engine/host-deploy/ovirt-host-deploy-ansible-20180908012152-172.21.111.58-db4c88e0-cd98-4d65-b876-f970ab3c36ec.log
2018-09-07 14:02:52,535 p=4548 u=ovirt | Using /usr/share/ovirt-engine/playbooks/ansible.cfg as config file
2018-09-07 14:02:52,536 p=4548 u=ovirt | [ERROR]: Unable to set correct type for configuration entry for
DEFAULT_LOCAL_TMP: Unable to create local directories(/root/.ansible/tmp):
[Errno 13] Permission denied: '/root/.ansible'

both ovirt/engine:master or ovirt/engine:4.2 have this problem