Ok. I found log-file 
/var/log/ovirt-engine/host-deploy/ovirt-host-mgmt-20160912020013-kom-ad01-vm31.holding.com-null.log
 with this:

...
2016-09-12 02:00:13 ERROR otopi.plugins.otopi.packagers.yumpackager 
yumpackager.error:85 Yum Cannot queue package iproute: Cannot find a valid 
baseurl for repo: base/7/x86_64
2016-09-12 02:00:13 DEBUG otopi.context context._executeMethod:142 method 
exception
Traceback (most recent call last):
  File "/tmp/ovirt-B4lcSm14u9/pythonlib/otopi/context.py", line 132, in 
_executeMethod
    method['method']()
  File "/tmp/ovirt-B4lcSm14u9/otopi-plugins/otopi/network/hostname.py", line 
54, in _internal_packages
    self.packager.install(packages=('iproute',))
  File "/tmp/ovirt-B4lcSm14u9/otopi-plugins/otopi/packagers/yumpackager.py", 
line 295, in install
    ignoreErrors=ignoreErrors
  File "/tmp/ovirt-B4lcSm14u9/pythonlib/otopi/miniyum.py", line 851, in install
    **kwargs
  File "/tmp/ovirt-B4lcSm14u9/pythonlib/otopi/miniyum.py", line 495, in _queue
    provides = self._queryProvides(packages=(package,))
  File "/tmp/ovirt-B4lcSm14u9/pythonlib/otopi/miniyum.py", line 433, in 
_queryProvides
    for po in self._yb.searchPackageProvides(args=packages):
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 3429, in 
searchPackageProvides
    where = self.returnPackagesByDep(arg)
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 4255, in 
returnPackagesByDep
    return self.pkgSack.searchProvides(depstring)
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1079, in 
<lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 784, in 
_getSacks
    self.repos.populateSack(which=repos)
  File "/usr/lib/python2.7/site-packages/yum/repos.py", line 344, in 
populateSack
    self.doSetup()
  File "/usr/lib/python2.7/site-packages/yum/repos.py", line 158, in doSetup
    self.ayum.plugins.run('postreposetup')
  File "/usr/lib/python2.7/site-packages/yum/plugins.py", line 188, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File "/usr/lib/yum-plugins/fastestmirror.py", line 197, in postreposetup_hook
    if downgrade_ftp and _len_non_ftp(repo.urls) == 1:
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 871, in <lambda>
    urls = property(fget=lambda self: self._geturls(),
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 868, in _geturls
    self._baseurlSetup()
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 834, in 
_baseurlSetup
    self.check()
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 554, in check
    'Cannot find a valid baseurl for repo: %s' % self.ui_id
RepoError: Cannot find a valid baseurl for repo: base/7/x86_64
2016-09-12 02:00:13 ERROR otopi.context context._executeMethod:151 Failed to 
execute stage 'Environment packages setup': Cannot find a valid baseurl for 
repo: base/7/x86_64
2016-09-12 02:00:13 DEBUG otopi.transaction transaction.abort:119 aborting 'Yum 
Transaction'
2016-09-12 02:00:13 INFO otopi.plugins.otopi.packagers.yumpackager 
yumpackager.info:80 Yum Performing yum transaction rollback
Could not retrieve mirrorlist 
http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error 
was
14: curl#7 - "Failed to connect to 2604:1580:fe02:2::10: Network is unreachable"
Loaded plugins: fastestmirror
2016-09-12 02:00:13 DEBUG otopi.context context.dumpEnvironment:760 ENVIRONMENT 
DUMP - BEGIN
2016-09-12 02:00:13 DEBUG otopi.context context.dumpEnvironment:770 ENV 
BASE/error=bool:'True'
2016-09-12 02:00:13 DEBUG otopi.context context.dumpEnvironment:770 ENV 
BASE/exceptionInfo=list:'[(<class 'yum.Errors.RepoError'>, RepoError(), 
<traceback object at 0x7f7002252f80>)]'
2016-09-12 02:00:13 DEBUG otopi.context context.dumpEnvironment:774 ENVIRONMENT 
DUMP - END
...

He's trying to use ipv6 connection ??
But, I have not ipv6 networks and my hosts/engine used only ipv4 settings.

12.09.2016, 15:45, "Martin Perina" <mper...@redhat.com>:
>> ​2016-09-12 02:00:13,388 INFO 
>> [org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>> Retrieving installation logs to: 
>> '/var/log/ovirt-engine/host-deploy/ovirt-host-mgmt-20160912020013-kom-ad01-vm31.holding.com-null.l$
>
> This is most probably the log file where details of the issue can be found
>
> On Mon, Sep 12, 2016 at 2:35 PM, Yedidyah Bar David <d...@redhat.com> wrote:
>> On Mon, Sep 12, 2016 at 3:08 PM,  <aleksey.maksi...@it-kb.ru> wrote:
>>>
>>> Excuse me. I do not understand. What I should do?
>>> The directory /var/log/ovirt-engine/host-deploy many different log files
>>
>> Please check the one from a time where you see this error.
>>
>> Every run of host-deploy creates its own log file.
>>
>> Best,
>>
>>>
>>> 12.09.2016, 14:59, "Yedidyah Bar David" <d...@redhat.com>:
>>>> On Mon, Sep 12, 2016 at 11:17 AM, <aleksey.maksi...@it-kb.ru> wrote:
>>>>>  # yum install iproute
>>>>>
>>>>>  Loaded plugins: fastestmirror
>>>>>  Loading mirror speeds from cached hostfile
>>>>>   * base: mirror.awanti.com
>>>>>   * elrepo: dfw.mirror.rackspace.com
>>>>>   * epel: epel.besthosting.ua
>>>>>   * extras: centos-mirror.rbc.ru
>>>>>   * ovirt-4.0: ftp.nluug.nl
>>>>>   * ovirt-4.0-epel: epel.besthosting.ua
>>>>>   * updates: centos-mirror.rbc.ru
>>>>>  Package iproute-3.10.0-54.el7_2.1.x86_64 already installed and latest 
>>>>>version
>>>>>  Nothing to do
>>>>>
>>>>>  # ls -la /etc/yum.repos.d/
>>>>>
>>>>>  total 76
>>>>>  drwxr-xr-x. 2 root root 4096 Jul 26 14:08 .
>>>>>  drwxr-xr-x. 102 root root 12288 Sep 12 11:00 ..
>>>>>  -rw-r--r--. 1 root root 1664 Dec 9 2015 CentOS-Base.repo
>>>>>  -rw-r--r--. 1 root root 1309 Dec 9 2015 CentOS-CR.repo
>>>>>  -rw-r--r--. 1 root root 649 Dec 9 2015 CentOS-Debuginfo.repo
>>>>>  -rw-r--r--. 1 root root 290 Dec 9 2015 CentOS-fasttrack.repo
>>>>>  -rw-r--r--. 1 root root 630 Dec 9 2015 CentOS-Media.repo
>>>>>  -rw-r--r--. 1 root root 1331 Dec 9 2015 CentOS-Sources.repo
>>>>>  -rw-r--r--. 1 root root 1952 Dec 9 2015 CentOS-Vault.repo
>>>>>  -rw-r--r--. 1 root root 2150 May 21 2014 elrepo.repo
>>>>>  -rw-r--r--. 1 root root 957 Jun 3 16:52 epel.repo
>>>>>  -rw-r--r--. 1 root root 1056 Jun 3 16:52 epel-testing.repo
>>>>>  -rw-r--r--. 1 root root 383 Jul 21 10:44 HP-MCP.repo
>>>>>  -rw-r--r--. 1 root root 446 Jul 21 10:45 HP-SPP-2014-06.repo
>>>>>  -rw-r--r--. 1 root root 417 Jul 21 10:44 HP-SPP-Current.repo
>>>>>  -rw-r--r--. 1 root root 1678 Jul 26 14:08 ovirt-4.0-dependencies.repo
>>>>>  -rw-r--r--. 1 root root 289 Jul 26 14:08 ovirt-4.0.repo
>>>>>
>>>>>  Which repo file you are interested in?
>>>>
>>>> The one(s) that has in it '[base]'. Also, you might find more
>>>> details in the host-deploy log, in /var/log/ovirt-engine/host-deploy .
>>>>
>>>>>  12.09.2016, 11:14, "Yedidyah Bar David" <d...@redhat.com>:
>>>>>>  On Mon, Sep 12, 2016 at 10:59 AM, <aleksey.maksi...@it-kb.ru> wrote:
>>>>>>>   Hi, Martin.
>>>>>>>
>>>>>>>   The command is executed successfully:
>>>>>>>
>>>>>>>   Updated:
>>>>>>>     vdsm.x86_64 0:4.18.12-1.el7 vdsm-cli.noarch 0:4.18.12-1.el7
>>>>>>>   Dependency Updated:
>>>>>>>     vdsm-api.noarch 0:4.18.12-1.el7 vdsm-hook-vmfex-dev.noarch 
>>>>>>>0:4.18.12-1.el7 vdsm-infra.noarch 0:4.18.12-1.el7
>>>>>>>     vdsm-jsonrpc.noarch 0:4.18.12-1.el7 vdsm-python.noarch 
>>>>>>>0:4.18.12-1.el7 vdsm-xmlrpc.noarch 0:4.18.12-1.el7
>>>>>>>     vdsm-yajsonrpc.noarch 0:4.18.12-1.el7
>>>>>>>   Complete!
>>>>>>>
>>>>>>>   12.09.2016, 10:47, "Martin Perina" <mper...@redhat.com>:
>>>>>>>>   Hi Aleksey,
>>>>>>>>
>>>>>>>>   the error message is raised by Host upgrade manager (more info at 
>>>>>>>>[1]) which checks for available package upgrades on the host.
>>>>>>>>
>>>>>>>>   It seems that you have somehow corrupted repository configuration of 
>>>>>>>>the host 'kom-ad01-vm31.holding.com':
>>>>>>>>
>>>>>>>>   2016-09-12 02:00:13,300 ERROR 
>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] Yum 
>>>>>>>>Cannot queue package iproute: Cannot find a valid baseurl for repo: 
>>>>>>>>base/7/x86_64
>>>>>>>>   2016-09-12 02:00:13,304 ERROR 
>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>Failed to execute stage 'Environment packages setup': Cannot find a 
>>>>>>>>valid baseurl for repo: base/7/x86_64
>>>>>>>>
>>>>>>>>   Could you please verify that you are able to successfully execute 
>>>>>>>>following commands on the host?
>>>>>>>>
>>>>>>>>     yum check-update
>>>>>>>>     yum update vdsm vdsm-cli
>>>>>>
>>>>>>  Can you please try also:
>>>>>>
>>>>>>  yum install iproute
>>>>>>
>>>>>>  And also share your /etc/yum.repos.d/* ?
>>>>>>
>>>>>>  Thanks.
>>>>>>
>>>>>>>>   Thanks
>>>>>>>>
>>>>>>>>   Martin Perina
>>>>>>>>
>>>>>>>>   [1] 
>>>>>>>>http://www.ovirt.org/develop/release-management/features/engine/upgrademanager/
>>>>>>>>
>>>>>>>>   On Mon, Sep 12, 2016 at 9:20 AM, <aleksey.maksi...@it-kb.ru> wrote:
>>>>>>>>>   Hello oVirt guru`s!
>>>>>>>>>
>>>>>>>>>   oVirt Engine Version: 4.0.1.1-1.el7.centos
>>>>>>>>>
>>>>>>>>>   Every day there is a message in web UI for one of my two hosts:
>>>>>>>>>
>>>>>>>>>   "Failed to check for available updates on host KOM-AD01-VM31 with 
>>>>>>>>>message 'Command returned failure code 1 during SSH session 'root@
>>>>>>>>>
>>>>>>>>>   kom-ad01-vm31.holding.com''.
>>>>>>>>>
>>>>>>>>>   In /var/log/ovirt-engine/engine.log at this time:
>>>>>>>>>
>>>>>>>>>   ...
>>>>>>>>>   2016-09-12 01:59:45,045 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Stage: Initializing
>>>>>>>>>   2016-09-12 01:59:45,055 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Stage: Environment setup
>>>>>>>>>   2016-09-12 01:59:45,070 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Stage: Environment packages setup
>>>>>>>>>
>>>>>>>>>   2016-09-12 02:00:13,300 ERROR 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Yum Cannot queue package iproute: Cannot find a valid baseurl for 
>>>>>>>>>repo: base/7/x86_64
>>>>>>>>>   2016-09-12 02:00:13,304 ERROR 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Failed to execute stage 'Environment packages setup': Cannot find a 
>>>>>>>>>valid baseurl for repo: base/7/x86_64
>>>>>>>>>   2016-09-12 02:00:13,304 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Yum Performing yum transaction rollback
>>>>>>>>>   2016-09-12 02:00:13,368 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Stage: Pre-termination
>>>>>>>>>   2016-09-12 02:00:13,388 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Retrieving installation logs to: 
>>>>>>>>>'/var/log/ovirt-engine/host-deploy/ovirt-host-mgmt-20160912020013-kom-ad01-vm31.holding.com-null.l$
>>>>>>>>>   2016-09-12 02:00:13,459 INFO 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] (VdsDeploy) [] 
>>>>>>>>>Stage: Termination
>>>>>>>>>   2016-09-12 02:00:13,506 ERROR 
>>>>>>>>>[org.ovirt.engine.core.uutils.ssh.SSHDialog] (DefaultQuartzScheduler5) 
>>>>>>>>>[] SSH error running command r...@kom-ad01-vm31.holding.com:'umask 
>>>>>>>>>0077; MYTMP="$(TMPDIR="${OVIRT_TMPDIR}" mktemp -d -t 
>>>>>>>>>ovirt-XXXXXXXXXX)"; 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-mgmt 
>>>>>>>>>DIALOG/dialect=str:machine DIALOG/customization=bool:True': Command 
>>>>>>>>>returned failure code 1 during SSH session 
>>>>>>>>>'r...@kom-ad01-vm31.holding.com'
>>>>>>>>>
>>>>>>>>>   2016-09-12 02:00:13,506 ERROR 
>>>>>>>>>[org.ovirt.engine.core.uutils.ssh.SSHDialog] (DefaultQuartzScheduler5) 
>>>>>>>>>[] Exception: java.io.IOException: Command returned failure code 1 
>>>>>>>>>during SSH session 'r...@kom-ad01-vm31.holding.com'
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.uutils.ssh.SSHClient.executeCommand(SSHClient.java:526)
>>>>>>>>> [uutils.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.uutils.ssh.SSHDialog.executeCommand(SSHDialog.java:317)
>>>>>>>>> [uutils.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase.execute(VdsDeployBase.java:563)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.host.HostUpgradeManager.isUpdateAvailable(HostUpgradeManager.java:44)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.host.AvailableUpdatesFinder.isUpdateAvailable(AvailableUpdatesFinder.java:26)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.VdsEventListener.isUpdateAvailable(VdsEventListener.java:553)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.vdsbroker.ResourceManager.isUpdateAvailable(ResourceManager.java:510)
>>>>>>>>> [vdsbroker.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.vdsbroker.VdsManager.availableUpdates(VdsManager.java:306)
>>>>>>>>> [vdsbroker.jar:]
>>>>>>>>>           at sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
>>>>>>>>>Method) [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.lang.reflect.Method.invoke(Method.java:498) 
>>>>>>>>>[rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.utils.timer.JobWrapper.invokeMethod(JobWrapper.java:77)
>>>>>>>>> [scheduler.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.utils.timer.JobWrapper.execute(JobWrapper.java:51)
>>>>>>>>> [scheduler.jar:]
>>>>>>>>>           at org.quartz.core.JobRunShell.run(JobRunShell.java:213) 
>>>>>>>>>[quartz.jar:]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
>>>>>>>>>[rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_101]
>>>>>>>>>
>>>>>>>>>   2016-09-12 02:00:13,507 ERROR 
>>>>>>>>>[org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase] 
>>>>>>>>>(DefaultQuartzScheduler5) [] Error during host 
>>>>>>>>>kom-ad01-vm31.holding.com install: java.io.IOException: Command 
>>>>>>>>>returned failure code 1 during SSH session 
>>>>>>>>>'r...@kom-ad01-vm31.holding.com'
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.uutils.ssh.SSHClient.executeCommand(SSHClient.java:526)
>>>>>>>>> [uutils.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.uutils.ssh.SSHDialog.executeCommand(SSHDialog.java:317)
>>>>>>>>> [uutils.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase.execute(VdsDeployBase.java:563)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.host.HostUpgradeManager.isUpdateAvailable(HostUpgradeManager.java:44)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.host.AvailableUpdatesFinder.isUpdateAvailable(AvailableUpdatesFinder.java:26)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.VdsEventListener.isUpdateAvailable(VdsEventListener.java:553)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.vdsbroker.ResourceManager.isUpdateAvailable(ResourceManager.java:510)
>>>>>>>>> [vdsbroker.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.vdsbroker.VdsManager.availableUpdates(VdsManager.java:306)
>>>>>>>>> [vdsbroker.jar:]
>>>>>>>>>           at sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
>>>>>>>>>Method) [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.lang.reflect.Method.invoke(Method.java:498) 
>>>>>>>>>[rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.utils.timer.JobWrapper.invokeMethod(JobWrapper.java:77)
>>>>>>>>> [scheduler.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.utils.timer.JobWrapper.execute(JobWrapper.java:51)
>>>>>>>>> [scheduler.jar:]
>>>>>>>>>           at org.quartz.core.JobRunShell.run(JobRunShell.java:213) 
>>>>>>>>>[quartz.jar:]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
>>>>>>>>>[rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_101]
>>>>>>>>>
>>>>>>>>>   2016-09-12 02:00:13,512 ERROR 
>>>>>>>>>[org.ovirt.engine.core.bll.host.HostUpgradeManager] 
>>>>>>>>>(DefaultQuartzScheduler5) [] Failed to refresh host 'KOM-AD01-VM31' 
>>>>>>>>>packages 'vdsm-cli, vdsm' availability.
>>>>>>>>>   2016-09-12 02:00:13,512 ERROR 
>>>>>>>>>[org.ovirt.engine.core.bll.host.HostUpgradeManager] 
>>>>>>>>>(DefaultQuartzScheduler5) [] Exception: java.io.IOException: Command 
>>>>>>>>>returned failure code 1 during SSH session 
>>>>>>>>>'r...@kom-ad01-vm31.holding.com'
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.uutils.ssh.SSHClient.executeCommand(SSHClient.java:526)
>>>>>>>>> [uutils.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.uutils.ssh.SSHDialog.executeCommand(SSHDialog.java:317)
>>>>>>>>> [uutils.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.hostdeploy.VdsDeployBase.execute(VdsDeployBase.java:563)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.host.HostUpgradeManager.isUpdateAvailable(HostUpgradeManager.java:44)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.host.AvailableUpdatesFinder.isUpdateAvailable(AvailableUpdatesFinder.java:26)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.bll.VdsEventListener.isUpdateAvailable(VdsEventListener.java:553)
>>>>>>>>> [bll.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.vdsbroker.ResourceManager.isUpdateAvailable(ResourceManager.java:510)
>>>>>>>>> [vdsbroker.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.vdsbroker.VdsManager.availableUpdates(VdsManager.java:306)
>>>>>>>>> [vdsbroker.jar:]
>>>>>>>>>           at sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
>>>>>>>>>Method) [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.lang.reflect.Method.invoke(Method.java:498) 
>>>>>>>>>[rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.utils.timer.JobWrapper.invokeMethod(JobWrapper.java:77)
>>>>>>>>> [scheduler.jar:]
>>>>>>>>>           at 
>>>>>>>>>org.ovirt.engine.core.utils.timer.JobWrapper.execute(JobWrapper.java:51)
>>>>>>>>> [scheduler.jar:]
>>>>>>>>>           at org.quartz.core.JobRunShell.run(JobRunShell.java:213) 
>>>>>>>>>[quartz.jar:]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
>>>>>>>>>[rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at 
>>>>>>>>>java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>>>>>>>>> [rt.jar:1.8.0_101]
>>>>>>>>>           at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_101]
>>>>>>>>>
>>>>>>>>>   2016-09-12 02:00:13,513 ERROR 
>>>>>>>>>[org.ovirt.engine.core.vdsbroker.VdsManager] (DefaultQuartzScheduler5) 
>>>>>>>>>[] Failed to check if updates are available for host 'KOM-AD01-VM31'
>>>>>>>>>   2016-09-12 02:00:13,518 ERROR 
>>>>>>>>>[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] 
>>>>>>>>>(DefaultQuartzScheduler5) [] Correlation ID: null, Call Stack: null, 
>>>>>>>>>Custom Event ID: -1, Message: Failed to check for available updates on 
>>>>>>>>>host KOM-AD01-VM31 with message 'Command returned failure code 1 
>>>>>>>>>during SSH session 'r...@kom-ad01-vm31.holding.com''.
>>>>>>>>>
>>>>>>>>>   ...
>>>>>>>>>
>>>>>>>>>   What could be the problem?
>>>>>>>>>   _______________________________________________
>>>>>>>>>   Users mailing list
>>>>>>>>>   Users@ovirt.org
>>>>>>>>>   http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>   _______________________________________________
>>>>>>>   Users mailing list
>>>>>>>   Users@ovirt.org
>>>>>>>   http://lists.ovirt.org/mailman/listinfo/users
>>>>>>
>>>>>>  --
>>>>>>  Didi
>>>>
>>>> --
>>>> Didi
>>
>> --
>> Didi
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