Hello everybody

I am facing the following issue currently.

I am trying to add a new physical host to our cluster via oVirt Management 
Engine Web GUI.
Apparently communication between oVirt Engine and the corresponding host is 
working well, since all necessary packages will be installed successfully.
But after a while the installation process fails with the error "No Route to 
Host" and the host ends up in state "non operational".

I checked the network interfaces via Web GUI (Host -> Network Interfaces -> 
Setup Host Networks) and none of the interfaces are present.
In my opinion this is the main problem. It seems the interfaces are not being 
recognized.

I tried using a bond interface and a single interface with static configuration 
(IP, DNS, Gateway).
None of them worked.

Further Log Errors:
WARN  [org.ovirt.engine.core.vdsbroker.VdsManager] 
(EE-ManagedThreadFactory-engine-Thread-1688) [] Host 'HOSTNAME' is not 
responding.
ERROR 
[org.ovirt.engine.core.vdsbroker.vdsbroker.GetCapabilitiesAsyncVDSCommand] 
(EE-ManagedThreadFactory-engineScheduled-Thread-50) [] Command 
'GetCapabilitiesAsyncVDSCommand(HostName = HOSTNAME, 
VdsIdAndVdsVDSCommandParametersBase:{hostId='08b7051f-fb49-4df1-8fc4-55b109064b04',
 vds='Host[HOSTNAME,08b7051f-fb49-4df1-8fc4-55b109064b04]'})' execution failed: 
java.net.NoRouteToHostException: No route to host
ERROR [org.ovirt.engine.core.vdsbroker.monitoring.HostMonitoring] 
(EE-ManagedThreadFactory-engineScheduled-Thread-50) [] Unable to 
RefreshCapabilities: NoRouteToHostException: No route to host
WARN  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] 
(EE-ManagedThreadFactory-engineScheduled-Thread-46) [3ca7e6f1] EVENT_ID: 
VDS_SET_NONOPERATIONAL_NETWORK(519), Host does not comply with the cluster 
Cluster networks, the following networks are missing on host: 
'inet,inet-customers,inet-hosting,net1,net3,net38,net-hosting,ovirtmgmt'
ERROR [org.ovirt.engine.core.bll.job.ExecutionHandler] 
(EE-ManagedThreadFactory-engineScheduled-Thread-46) [3ca7e6f1] Exception: 
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC 
Connection; nested exception is java.sql.SQLException: 
javax.resource.ResourceException: IJ000457: Unchecked throwable in 
managedConnectionReconnected() 
cl=org.jboss.jca.core.connectionmanager.listener.TxConnectionListener@20050329[state=NORMAL
 managed 
connection=org.jboss.jca.adapters.jdbc.local.LocalManagedConnection@48465810 
connection handles=0 lastReturned=1538703578989 lastValidated=1538703000851 
lastCheckedOut=1538703278635 trackByTx=false 
pool=org.jboss.jca.core.connectionmanager.pool.strategy.OnePool@17388824 
mcp=SemaphoreConcurrentLinkedQueueManagedConnectionPool@4eb14706[pool=ENGINEDataSource]
 xaResource=LocalXAResourceImpl@65d3b585[connectionListener=20050329 
connectionManager=1fe5192 warned=false currentXid=null productName=PostgreSQL 
productVersion=9.5.9 jndiName=jav
 a:/ENGINEDataSource] txSync=null]

I am using oVirt Open Virtualization Manager Version 4.2.2.6-1.el7.centos.
OS Version: RHEL - 7 - 4.1708.el7.centos (also tested with CentOS 7.5)
OS Description: CentOS Linux 7 (Core)
KVM Version: 2.9.0 - 16.el7_4.14.1
LIBVIRT Version: libvirt-3.2.0-14.el7_4.9
VDSM Version: vdsm-4.20.23-1.el7.centos

Any hints and suggestions are very appreciated!

Thanks in advance.

Chris
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