I'm getting further along with 4.2.2rc3 than the 4.2.1 when it comes to hosted engine and vlans.. it actually does install under 4.2.2rc3. But it's a complete failure when I switch the cluster from Linux Bridge/Legacy to OVS. The first time I try, vdsm does not properly configure the node, it's all messed up. I'm getting this in vdsmd logs: 2018-03-08 23:12:46,610-0800 INFO (jsonrpc/7) [api.network] START setupNetworks(networks={u'ovirtmgmt': {u'ipv6autoconf': True, u'nic': u'eno1', u'vlan': u'50', u'ipaddr': u'192.168.85.49', u'switch': u'ovs', u'mtu': 1500, u'netmask': u'255.255.252.0', u'dhcpv6': False, u'STP': u'no', u'bridged': u'true', u'gateway': u'192.168.85.254', u'defaultRoute': True}}, bondings={}, options={u'connectivityCheck': u'true', u'connectivityTimeout': 120}) from=::ffff:192.168.85.24,56806, flow_id=4147e25f-0a23-4f47-a0a4-d424a3437d11 (api:46) 2018-03-08 23:12:52,449-0800 INFO (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC call Host.ping2 succeeded in 0.00 seconds (__init__:573) 2018-03-08 23:12:52,511-0800 INFO (jsonrpc/7) [api.network] FINISH setupNetworks error=[Errno 19] ovirtmgmt is not present in the system from=::ffff:192.168.85.24,56806, flow_id=4147e25f-0a23-4f47-a0a4-d424a3437d11 (api:50) 2018-03-08 23:12:52,512-0800 ERROR (jsonrpc/7) [jsonrpc.JsonRpcServer] Internal server error (__init__:611) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 606, in _handle_request res = method(**params) File "/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 201, in _dynamicMethod result = fn(*methodArgs) File "<string>", line 2, in setupNetworks File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in method ret = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/API.py", line 1527, in setupNetworks supervdsm.getProxy().setupNetworks(networks, bondings, options) File "/usr/lib/python2.7/site-packages/vdsm/common/supervdsm.py", line 55, in __call__ return callMethod() File "/usr/lib/python2.7/site-packages/vdsm/common/supervdsm.py", line 53, in <lambda> **kwargs) File "<string>", line 2, in setupNetworks File "/usr/lib64/python2.7/multiprocessing/managers.py", line 773, in _callmethod raise convert_to_error(kind, result) IOError: [Errno 19] ovirtmgmt is not present in the system 2018-03-08 23:12:52,512-0800 INFO (jsonrpc/7) [jsonrpc.JsonRpcServer] RPC call Host.setupNetworks failed (error -32603) in 5.90 seconds (__init__:573) 2018-03-08 23:12:54,769-0800 INFO (jsonrpc/1) [jsonrpc.JsonRpcServer] RPC call Host.ping2 succeeded in 0.00 seconds (__init__:573) 2018-03-08 23:12:54,772-0800 INFO (jsonrpc/5) [api.host] START getCapabilities() from=::1,45562 (api:46) 2018-03-08 23:12:54,906-0800 INFO (jsonrpc/5) [api.host] FINISH getCapabilities error=[Errno 19] ovirtmgmt is not present in the system from=::1,45562 (api:50) 2018-03-08 23:12:54,906-0800 ERROR (jsonrpc/5) [jsonrpc.JsonRpcServer] Internal server error (__init__:611) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 606, in _handle_request res = method(**params) File "/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 201, in _dynamicMethod result = fn(*methodArgs) File "<string>", line 2, in getCapabilities File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in method ret = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/API.py", line 1339, in getCapabilities c = caps.get() File "/usr/lib/python2.7/site-packages/vdsm/host/caps.py", line 168, in get net_caps = supervdsm.getProxy().network_caps() File "/usr/lib/python2.7/site-packages/vdsm/common/supervdsm.py", line 55, in __call__ return callMethod() File "/usr/lib/python2.7/site-packages/vdsm/common/supervdsm.py", line 53, in <lambda> **kwargs) File "<string>", line 2, in network_caps File "/usr/lib64/python2.7/multiprocessing/managers.py", line 773, in _callmethod raise convert_to_error(kind, result) IOError: [Errno 19] ovirtmgmt is not present in the system So something is dreadfully wrong with the bridge to ovs conversion in 4.2.2rc3. thomas