nslookup resolves names on the engine and hosts without ipv6 address:

# nslookup mirrorlist.centos.org

Server:         10.1.0.10
Address:        10.1.0.10#53

Non-authoritative answer:
Name:   mirrorlist.centos.org
Address: 67.219.148.138
Name:   mirrorlist.centos.org
Address: 85.236.43.108
Name:   mirrorlist.centos.org
Address: 212.69.166.138
Name:   mirrorlist.centos.org
Address: 216.176.179.218

Why oVirt updates checking process trying to use ipv6 ?


13.09.2016, 08:26, "aleksey.maksi...@it-kb.ru" <aleksey.maksi...@it-kb.ru>:
> Yesterday I changed the settings the host to:
>
> net.ipv6.conf.all.disable_ipv6 = 1
> net.ipv6.conf.default.disable_ipv6 = 1
>
> I deleted the last two lines in /etc/sysctl.conf and rebooted host.
>
> Tonight - problem repeated:
>
> 2016-09-13 01:11:13 ERROR otopi.context context._executeMethod:151 Failed to 
> execute stage 'Environment packages setup': Cannot find a valid baseurl for 
> repo: base/7/x86_64
> 2016-09-13 01:11:13 DEBUG otopi.transaction transaction.abort:119 aborting 
> 'Yum Transaction'
> 2016-09-13 01:11:13 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"
>
> Why so?
>
> 12.09.2016, 17:34, "Martin Perina" <mper...@redhat.com>:
>> On Mon, Sep 12, 2016 at 3:34 PM, <aleksey.maksi...@it-kb.ru> wrote:
>>> My /etc/sysctl.conf is:
>>>
>>> net.ipv6.conf.all.disable_ipv6 = 1
>>> net.ipv6.conf.default.disable_ipv6 = 1
>>> net.ipv6.conf.lo.disable_ipv6 = 0
>>> net.ipv6.conf.ovirtmgmt.disable_ipv6 = 0
>>
>> ​I'm not networking expert, but last two lines means that you have IPv6 
>> enabled on loopback and ovirtmgmt network interfaces (but disabled on all 
>> others). So you shouldn't be surprised to get IPv6 address from DNS resolver 
>> if ovirtmgmt supports IPv6. Dan/Edward, am I right?
>> ​
>>> Last two lines was added for 
>>> http://lists.ovirt.org/pipermail/users/2016-July/041443.html
>>>
>>> My configuration file is bad ??
>>>
>>> 12.09.2016, 16:22, "Martin Perina" <mper...@redhat.com>:
>>>> On Mon, Sep 12, 2016 at 2:49 PM, <aleksey.maksi...@it-kb.ru> wrote:
>>>>> 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.
>>>>
>>>> ​Hmm, it seems to me that you don't have IPv6 disabled properly, as your 
>>>> DNS resolver returns you IPv6 addresses. Please take a look at:
>>>>
>>>> https://wiki.centos.org/FAQ/CentOS7#head-8984faf811faccca74c7bcdd74de7467f2fcd8ee
>>>> ​
>>>>
>>>>> 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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