ovirt遇到一个问题，因为没有在ovirt engine中删除就重装了其中一个节点，导致重新添加该节点时出现了一个报错“Host with the same UUID already exists.”
因此需要进入数据库中删除节点信息
登录ovirt engine输入
su postgre psql -s engine
然后执行
select vds_id from vds_static where host_name ='HOST_NAME';deletefrom vds_statistics where vds_id ='id';deletefrom vds_dynamic where vds_id ='id';deletefrom vds_static where vds_id ='id';
