RHEV Host installation fails, "Installation failed. Command returned failure code 1 during ssh session"

Issue

• RHEV host installation failed with Installation Failed. Command returned failure code 1 during SSH session. error message in the event logs and in the engine logs.

• Sample `/var/log/ovirt-engine/engine.log' sequence;

2014-09-18 10:54:32,276 INFO  [org.ovirt.engine.core.bll.InstallerMessages] (VdsDeploy) Installation x.x.x.x: Stage: Termination
2014-09-18 10:54:32,288 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (VdsDeploy) Correlation ID: 3dd5d76a, Call Stack: null, Custom Event ID: -1, Message: Installing Host rhev-h. Stage: Termination.
2014-09-18 10:54:32,340 ERROR [org.ovirt.engine.core.utils.ssh.SSHDialog] (org.ovirt.thread.pool-4-thread-11) SSH error running command root@10.18.33.25:'umask 0077; MYTMP="$(mktemp -t ovirt-XXXXXXXXXX)"; trap "chmod -R u+rwX \"${MYTMP}\" > /dev/null 2>&1; rm -fr \"${MYTMP}\" > /dev/null 2>&1" 0; rm -fr "${MYTMP}" && mkdir "${MYTMP}" && tar --warning=no-timestamp -C "${MYTMP}" -x &&  "${MYTMP}"/setup DIALOG/dialect=str:machine DIALOG/customization=bool:True': java.io.IOException: Command returned failure code 1 during SSH session 'root@x.x.x.x'
    at org.ovirt.engine.core.utils.ssh.SSHClient.executeCommand(SSHClient.java:527) [utils.jar:]
    at org.ovirt.engine.core.utils.ssh.SSHDialog.executeCommand(SSHDialog.java:318) [utils.jar:]
    at org.ovirt.engine.core.bll.VdsDeploy.execute(VdsDeploy.java:1046) [bll.jar:]
        ................................. etc, etc, .........................................
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_65]
    at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_65]

2014-09-18 10:54:32,343 ERROR [org.ovirt.engine.core.bll.VdsDeploy] (org.ovirt.thread.pool-4-thread-11) [3dd5d76a] Error during host x.x.x.x install: java.io.IOException: Command returned failure code 1 during SSH session 'root@x.x.x.x'
    at org.ovirt.engine.core.utils.ssh.SSHClient.executeCommand(SSHClient.java:527) [utils.jar:]
    at org.ovirt.engine.core.utils.ssh.SSHDialog.executeCommand(SSHDialog.java:318) [utils.jar:]
    at org.ovirt.engine.core.bll.VdsDeploy.execute(VdsDeploy.java:1046) [bll.jar:]
        ................................. etc, etc, .........................................
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_65]
    at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_65]

2014-09-18 10:54:32,348 ERROR [org.ovirt.engine.core.bll.InstallVdsCommand] (org.ovirt.thread.pool-4-thread-11) [3dd5d76a] Host installation failed for host 6ac2d3c6-12ec-41a1-8c3f-51d3d78f65c5, rhev-h.: java.io.IOException: Command returned failure code 1 during SSH session 'root@x.x.x.x'
    at org.ovirt.engine.core.utils.ssh.SSHClient.executeCommand(SSHClient.java:527) [utils.jar:]
    at org.ovirt.engine.core.utils.ssh.SSHDialog.executeCommand(SSHDialog.java:318) [utils.jar:]
    at org.ovirt.engine.core.bll.VdsDeploy.execute(VdsDeploy.java:1046) [bll.jar:]
        ................................. etc, etc, .........................................