I'm failing to install hosts on o-s-t on Master. What worries me is not that I'm failing (though it is a bit of a surprise, perhaps something I've done?), but that there are no logs around it. /var/log/ovirt-engine/host-deploy is empty and so is /var/log/ovirt-engine/ansible. All I'm seeing: Host lago-basic-suite-master-host-0 installation failed. Unexpected connection termination. Server.log: 2017-10-23 12:16:33,041-04 WARN [org.apache.sshd.client.session.ClientSessionImpl] (sshd-SshClient[346b54f3]-nio2-thread-2) Exception caught: java.io.IOException: Connection timed out at sun.nio.ch.FileDispatcherImpl.write0(Native Method) [rt.jar:1.8.0_151] at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47) [rt.jar:1.8.0_151] at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93) [rt.jar:1.8.0_151] at sun.nio.ch.IOUtil.write(IOUtil.java:65) [rt.jar:1.8.0_151] at sun.nio.ch.UnixAsynchronousSocketChannelImpl.finishWrite(UnixAsynchronousSocketChannelImpl.java:582) [rt.jar:1.8.0_151] at sun.nio.ch.UnixAsynchronousSocketChannelImpl.finish(UnixAsynchronousSocketChannelImpl.java:190) [rt.jar:1.8.0_151] at sun.nio.ch.UnixAsynchronousSocketChannelImpl.onEvent(UnixAsynchronousSocketChannelImpl.java:213) [rt.jar:1.8.0_151] at sun.nio.ch.EPollPort$EventHandlerTask.run(EPollPort.java:293) [rt.jar:1.8.0_151] at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_151] Engine.log: 2017-10-23 12:16:33,046-04 DEBUG [org.ovirt.engine.core.uutils.ssh.SSHClient] (EE-ManagedThreadFactory-engine-Thread-1) [83a00e1] Executed: 'umask 0077; MYTMP="$(TMPDIR="${OVIRT_TMPDIR}" mktemp -d -t ovirt-XXXXX XXXXX)"; trap "chmod -R u+rwX \"${MYTMP}\" > /dev/null 2>&1; rm -fr \"${MYTMP}\" > /dev/null 2>&1" 0; tar --warning=no-timestamp -C "${MYTMP}" -x && "${MYTMP}"/ovirt-host-deploy DIALOG/dialect=str:machine DIALO G/customization=bool:True' 2017-10-23 12:16:33,056-04 ERROR [org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [83a00e1] Error during deploy dialog 2017-10-23 12:16:33,057-04 DEBUG [org.ovirt.engine.core.uutils.ssh.SSHDialog] (EE-ManagedThreadFactory-engine-Thread-1) [83a00e1] execute leave 2017-10-23 12:16:33,057-04 ERROR [org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (EE-ManagedThreadFactory-engine-Thread-1) [83a00e1] Error during host lago-basic-suite-master-host-0 install 2017-10-23 12:16:33,065-04 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engine-Thread-1) [83a00e1] EVENT_ID: VDS_INSTALL_IN_PROGRESS_ERROR(511), An error has occurred during installation of Host lago-basic-suite-master-host-0: Unexpected connection termination. 2017-10-23 12:16:33,065-04 ERROR [org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (EE-ManagedThreadFactory-engine-Thread-1) [83a00e1] Error during host lago-basic-suite-master-host-0 install, preferring first exception: Unexpected connection termination 2017-10-23 12:16:33,065-04 ERROR [org.ovirt.engine.core.bll.hostdeploy.InstallVdsInternalCommand] (EE-ManagedThreadFactory-engine-Thread-1) [83a00e1] Host installation failed for host 'c4138375-aa53-4c36-8907-306803ae4282', 'lago-basic-suite-master-host-0': Unexpected connection termination