[ovirt-users] Re: Migrate machines in unknown state?

2019-05-14 Thread Ekin Meroğlu
Hi,

On Fri, Sep 30, 2016 at 9:27 PM, Yaniv Kaul  wrote:
>
> > ​btw, ​b
> > oth of the environments were RHE​V-H based RHEV 3.5 clusters, and both
> we were busy systems, so restarting vdsm service took quite a long time.
> I'm guessing this might be a factor.
>
> That indeed might be the factor - but vdsm should not take long to
> restart. If it happens on a more recent version, I'd be happy to know about
> it, as we've done work on ensuring that it restarts and answers quickly to
> the engine (as far as I remember, even before it fully completed the
> restart).
> Y.
>
​Since the last message we've updated the environments to an up-to-date
3.6.x actually, but I'm not sure if restarting vdsmd is stiil taking a long
time. I'll check back and let you know.​

​Thanks & Regards,​
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Re: [ovirt-users] I wrote an oVirt thing

2016-11-29 Thread Ekin Meroğlu
Hi,

On Tue, Nov 29, 2016 at 1:01 AM, Oved Ourfali <oourf...@redhat.com> wrote:

> BTW, the ovirt-shell is something we deprecated. It is working on top of
> the v3 api, which we plan to remove in 4.2.
> So better not use it.
>
​Is there a plan to replace the shell with something similar? I see it
frequently used by our users for both scripting and one-off tasks.

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Re: [ovirt-users] Migrate machines in unknown state?

2016-10-04 Thread Ekin Meroğlu
Hi,

On Fri, Sep 30, 2016 at 9:27 PM, Yaniv Kaul <yk...@redhat.com> wrote:
>
> > ​btw, ​b
> > oth of the environments were RHE​V-H based RHEV 3.5 clusters, and both
> we were busy systems, so restarting vdsm service took quite a long time.
> I'm guessing this might be a factor.
>
> That indeed might be the factor - but vdsm should not take long to
> restart. If it happens on a more recent version, I'd be happy to know about
> it, as we've done work on ensuring that it restarts and answers quickly to
> the engine (as far as I remember, even before it fully completed the
> restart).
> Y.
>
​Since the last message we've updated the environments to an up-to-date
3.6.x actually, but I'm not sure if restarting vdsmd is stiil taking a long
time. I'll check back and let you know.​

​Thanks & Regards,​
-- 
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Re: [ovirt-users] Migrate machines in unknown state?

2016-09-30 Thread Ekin Meroğlu
Hi Yaniv,

Just a reminder, can you give us a pointer? Red Hat Support just asked us
to disable PM before restarting vdsm again.

Thanks & Best regards,

On Mon, Aug 22, 2016 at 10:57 PM, Ekin Meroğlu <ekin.mero...@linuxera.com>
wrote:

> Hi Yaniv,
>
> On Sun, Aug 7, 2016 at 9:37 PM, Ekin Meroğlu <ekin.mero...@linuxera.com>
>> wrote:
>>
>>> Hi,
>>>
>>> Just a reminder, if you have power management configured, first turn
>>> that off for the host - when you restart vdsmd with the power management
>>> configured, engine finds it not responding and tries to fence (e.g. reboot)
>>> the host.
>>>
>>
>> That's not true - if it's a graceful restart, it should not happen.
>>
>
> ​Can you explain this a little more? Is there a mechanism to prevent
> fencing on this scenario?
>
> In two of our customers' production systems we've experienced this exact
> behavior (i.e. engine fencing the host while restarting vdsm service
> manually) for a number of times, and we were specifically advised by Red
> Hat Support to turn off PM before restarting service. I'd like to to know
> if we have a better / easier way to restart vdsm. ​
>
> ​btw, ​b
> oth of the environments were RHE​V-H based RHEV 3.5 clusters, and both we
> were busy systems, so restarting vdsm service took quite a long time. I'm
> guessing this might be a factor.
>
> Regards,
> ​
>
>>
>>
>
>>
>>>
>>> Other than that, restarting vdsmd has been safe in my experience...
>>>
>>> Regards,
>>>
>>> On Thu, Aug 4, 2016 at 6:10 PM, Nicolás <nico...@devels.es> wrote:
>>>
>>>>
>>>>
>>>> El 04/08/16 a las 15:25, Arik Hadas escribió:
>>>>
>>>>>
>>>>> - Original Message -
>>>>>
>>>>>> El 2016-08-04 08:24, Arik Hadas escribió:
>>>>>>
>>>>>>> - Original Message -
>>>>>>>
>>>>>>>>
>>>>>>>> El 04/08/16 a las 07:18, Arik Hadas escribió:
>>>>>>>>
>>>>>>>>> - Original Message -
>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> We're running oVirt 4.0.1 and today I found out that one of our
>>>>>>>>>> hosts
>>>>>>>>>> has all its VMs in an unknown state. I actually don't know how
>>>>>>>>>> (and
>>>>>>>>>> when) did this happen, but I'd like to restore service possibly
>>>>>>>>>> without
>>>>>>>>>> turning off these machines. The host is up, the VMs are up, 'qemu'
>>>>>>>>>> process exists, no errors, it's just the VMs running on it that
>>>>>>>>>> have a
>>>>>>>>>> '?' where status is defined.
>>>>>>>>>>
>>>>>>>>>> Is it safe in this case to simply modify database and set those
>>>>>>>>>> VM's
>>>>>>>>>> status to 'up'? I remember having to do this a time ago when we
>>>>>>>>>> faced
>>>>>>>>>> storage issues, it didn't break anything back then. If not, is
>>>>>>>>>> there a
>>>>>>>>>> "safe" way to migrate those VMs to a different host and restart
>>>>>>>>>> the
>>>>>>>>>> host
>>>>>>>>>> that marked them as unknown?
>>>>>>>>>>
>>>>>>>>> Hi Nicolás,
>>>>>>>>>
>>>>>>>>> I assume that the host these VMs are running on is empty in the
>>>>>>>>> webadmin,
>>>>>>>>> right? if that is the case then you've probably hit [1]. Changing
>>>>>>>>> their
>>>>>>>>> status to up is not the way to go since these VMs will not be
>>>>>>>>> monitored.
>>>>>>>>>
>>>>>>>> Hi Arik,
>>>>>>>>
>>>>>>>> By "empty" you mean the webadmin reports the host being running 0
>>>>>>>> VMs?
>>>>>>>> If so, that's not the case, actually the VM count seems to be

Re: [ovirt-users] Migrate machines in unknown state?

2016-08-22 Thread Ekin Meroğlu
Hi Yaniv,

On Sun, Aug 7, 2016 at 9:37 PM, Ekin Meroğlu <ekin.mero...@linuxera.com>
> wrote:
>
>> Hi,
>>
>> Just a reminder, if you have power management configured, first turn that
>> off for the host - when you restart vdsmd with the power management
>> configured, engine finds it not responding and tries to fence (e.g. reboot)
>> the host.
>>
>
> That's not true - if it's a graceful restart, it should not happen.
>

​Can you explain this a little more? Is there a mechanism to prevent
fencing on this scenario?

In two of our customers' production systems we've experienced this exact
behavior (i.e. engine fencing the host while restarting vdsm service
manually) for a number of times, and we were specifically advised by Red
Hat Support to turn off PM before restarting service. I'd like to to know
if we have a better / easier way to restart vdsm. ​

​btw, ​b
oth of the environments were RHE​V-H based RHEV 3.5 clusters, and both we
were busy systems, so restarting vdsm service took quite a long time. I'm
guessing this might be a factor.

Regards,
​

>
>

>
>>
>> Other than that, restarting vdsmd has been safe in my experience...
>>
>> Regards,
>>
>> On Thu, Aug 4, 2016 at 6:10 PM, Nicolás <nico...@devels.es> wrote:
>>
>>>
>>>
>>> El 04/08/16 a las 15:25, Arik Hadas escribió:
>>>
>>>>
>>>> - Original Message -
>>>>
>>>>> El 2016-08-04 08:24, Arik Hadas escribió:
>>>>>
>>>>>> - Original Message -
>>>>>>
>>>>>>>
>>>>>>> El 04/08/16 a las 07:18, Arik Hadas escribió:
>>>>>>>
>>>>>>>> - Original Message -
>>>>>>>>
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> We're running oVirt 4.0.1 and today I found out that one of our
>>>>>>>>> hosts
>>>>>>>>> has all its VMs in an unknown state. I actually don't know how (and
>>>>>>>>> when) did this happen, but I'd like to restore service possibly
>>>>>>>>> without
>>>>>>>>> turning off these machines. The host is up, the VMs are up, 'qemu'
>>>>>>>>> process exists, no errors, it's just the VMs running on it that
>>>>>>>>> have a
>>>>>>>>> '?' where status is defined.
>>>>>>>>>
>>>>>>>>> Is it safe in this case to simply modify database and set those
>>>>>>>>> VM's
>>>>>>>>> status to 'up'? I remember having to do this a time ago when we
>>>>>>>>> faced
>>>>>>>>> storage issues, it didn't break anything back then. If not, is
>>>>>>>>> there a
>>>>>>>>> "safe" way to migrate those VMs to a different host and restart the
>>>>>>>>> host
>>>>>>>>> that marked them as unknown?
>>>>>>>>>
>>>>>>>> Hi Nicolás,
>>>>>>>>
>>>>>>>> I assume that the host these VMs are running on is empty in the
>>>>>>>> webadmin,
>>>>>>>> right? if that is the case then you've probably hit [1]. Changing
>>>>>>>> their
>>>>>>>> status to up is not the way to go since these VMs will not be
>>>>>>>> monitored.
>>>>>>>>
>>>>>>> Hi Arik,
>>>>>>>
>>>>>>> By "empty" you mean the webadmin reports the host being running 0
>>>>>>> VMs?
>>>>>>> If so, that's not the case, actually the VM count seems to be correct
>>>>>>> in
>>>>>>> relation to "qemu-*" processes (about 32 VMs), I can even see the
>>>>>>> machines in the "Virtual machines" tab of the host, it's just they
>>>>>>> are
>>>>>>> all marked with the '?' mark.
>>>>>>>
>>>>>> No, I meant the 'Host' column in the Virtual Machines tab but if you
>>>>>> see
>>>>>> the VMs in the "Virtual machines" sub-tab of the host then run_on_vds
>>>>>> points to the right host..
>>>>>>
>>>>>> The host is up in the w

Re: [ovirt-users] cloud-init and sealing of template

2015-12-02 Thread Ekin Meroğlu
Hi,

You can always use REST-API to attach a cloud-init payload to the the
machines you create - see the API example in:

http://www.ovirt.org/Features/Cloud-Init_Integration

But the feature was somewhat broken in 3.5.5, recently fixed in 3.5.6:

https://bugzilla.redhat.com/show_bug.cgi?id=1269534

Please see that you should use the new true
tag for 3.5.6

I have no experience with it in previous versions tough...

For the template sealing, I only set hostname to localhost, remove the
infamous /etc/udev/rules.d/70-* files, delete HW lines form ifcfg-* files,
unregister the machine from satellite etc. and poweroff. I do not use
sys-unconfig (as it suggests), and did not need to run virt-sysprep - plain
old sealing with deleting the necessary info seemed enough for me...

Regards,
--
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Re: [ovirt-users] Team a NIC and add to ovirtmgmt vNIC

2015-05-18 Thread Ekin Meroğlu
Hi,

If I understood correctly, this operation does not incur a long downtime.

​To setup the bond, first ​y
ou'll need to select the relevant host, select
*​​Network Interfaces* and click
*​​Setup Host Networks*. At this step, you should be presented with
*​​NIC0* (eth0?) connected to
*​​ovirtmgmt*, and a standalone (and possibly down)
*​​NIC1* (eth1
​?​
). Just drag and drop
*​​NIC1* unto
*​​NIC0*, choose bond type and press
*​​OK*. After the bond is displayed, make sure you've selected both 
*​​Verify connectivity between Host and Engine* and 
*​​Save network configuration* options, and
​again ​
press
*​​OK*
​.​

​If all goes well, after the configuration you'll have a working bond with
ovirtmgmt on top of it. You'll have to repeat this for all hosts you'll be
configuring the new bond... All network downtime will be the total time of
bringing down eth0, creating bond0 and bringing up bond0 - no more than a
fraction of a minute normally. And this will only effect the guests on that
particular Host, not the whole cluster.​

A little side note on migrating from a single nic to a bond: if you plan to
add more VLAN tagged virtual networks to your new bond, keep in mind that
ovirtmgmt should also be VLAN tagged - you can not mix tagged and untagged
networks on a single bond.

​Regards,

On Mon, May 18, 2015 at 5:58 PM, Christophe TREFOIS 
christophe.tref...@uni.lu wrote:

  Dear all,

  How I would go about in an existing setup with 1 NIC and 1 vNIC
 ovirtmgmt, to add a second NIC, team them up (bonding) and then assign that
 one to ovirtmgmt without too much downtime?

  Does anybody have some experience on that?

  Thank you for your help,

  —
 Christophe

 Dr Christophe Trefois, Dipl.-Ing.
 Technical Specialist / Post-Doc

 UNIVERSITÉ DU LUXEMBOURG

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Re: [ovirt-users] IPA-auth: user password expired

2014-11-19 Thread Ekin Meroğlu
Hi Tibor,

On Wed, Nov 19, 2014 at 6:46 PM, Demeter Tibor tdeme...@itsmart.hu wrote:

 Hi,

 I have an IPA server 3.0 on centos 6.6.
 I successfully attached to my ovirt cluster.
 I can see the users on ovirt user tab, but after auth I always get this
 error:

 Cannot Login. User Password has expired. Use the following URL to change
 the password: (nothing)

 I have try out with different long passwords and different users, but it's
 same.


​Did you try accessing a regular linux client with the same account? In
IPA, new user passwords are always set as expired by design  - please see
[1].

To test this, you can try to login a client. If it is really expired,
system will ask you to provide a new password. After this, you'll be able
to login  RHEVM with the new password you've just set.

​[1]
http://www.freeipa.org/page/New_Passwords_Expired​

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Re: [ovirt-users] IPA-auth: user password expired

2014-11-19 Thread Ekin Meroğlu
Hi,

An ldappasswd command would change it without setting as expired. It will
prompt twice for the account password you'll set, and the password for the
directory  manager once:

$ ldappasswd -ZZ -D 'cn=directory manager' -W -S
uid=USERNAME,cn=users,cn=accounts,dc=example,dc=org -H ldap://
ipaserver.example.org

You'll need to set the username (USERNAME) domain (example.org) and server
FQDN accordingly.

Hope this helps,

On Wed, Nov 19, 2014 at 8:38 PM, Demeter Tibor tdeme...@itsmart.hu wrote:

 Hi,

 I don't have linux client.
 Can I change password without this?

 Thanks,

 Tibor

 --

 Hi Tibor,

 On Wed, Nov 19, 2014 at 6:46 PM, Demeter Tibor tdeme...@itsmart.hu
 wrote:

 Hi,

 I have an IPA server 3.0 on centos 6.6.
 I successfully attached to my ovirt cluster.
 I can see the users on ovirt user tab, but after auth I always get this
 error:

 Cannot Login. User Password has expired. Use the following URL to change
 the password: (nothing)

 I have try out with different long passwords and different users, but
 it's same.


 ​Did you try accessing a regular linux client with the same account? In
 IPA, new user passwords are always set as expired by design  - please see
 [1].

 To test this, you can try to login a client. If it is really expired,
 system will ask you to provide a new password. After this, you'll be able
 to login  RHEVM with the new password you've just set.

 ​[1]
 http://www.freeipa.org/page/New_Passwords_Expired​

 Regards,
 --
 Ekin





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Re: [ovirt-users] Non-Operational state because management interfaces down

2014-11-17 Thread Ekin Meroğlu
Hi Lior,

If I'm not mistaken, on Luf's topology, there is no switch on the
management bond (bond0) - just a cross or regular eth cable connecting
physical interfaces on both nodes. So when one node is powered down, there
is no link detected on the other node.

Regards,

On Mon, Nov 17, 2014 at 12:02 PM, Lior Vernia lver...@redhat.com wrote:

 Hi Luf,

 Apologies, I probably don't understand the details of your L2 toplogy;
 how come when you turn off one host it affects the link state of of the
 other one's interfaces?...

 Yours, Lior.

 On 14/11/14 11:43, Finstrle, Ludek wrote:
 
  Hi,
 
  I have 2-node ovirt cluster. Both machines has 4 interfaces.
  2 interfaces in bond1 for data
  2 interfaces in bond0 for management (short connected directly between
  servers)
 
  switch0 -\ /-\ /- switch0
  node1 node2
  switch1 -/ \-/ \- switch1
 
  I setup everything as I want/expect but I hit one problem and I don't
  know how to fix it. The problem is when I switch off one of the machines
  for maintenance (node01.ovirt in this case). I get in ovirt engine this
  message:
 
  Host node02.ovirt moved to Non-Operational state because interfaces
  which are down are needed by required networks in the current cluster:
  'bond0 (ovirtmgmt)'.
 
  Do you have any idea how to avoid it? I can't change physical
  architecture as I don't have 10Gb switch.
 
  BTW it's the same as if I want to start with only 1 node and separated
  data and mgmt networks:
 
  switch - host --(not connected iface for mgmt as I don't need it)
 
  Thanks,
 
  Luf
 
 
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Re: [ovirt-users] Mail in spam folder ...

2014-11-14 Thread Ekin Meroğlu
Hi,

On Fri, Nov 14, 2014 at 4:47 PM, Gianluca Cecchi gianluca.cec...@gmail.com
wrote:

 Hello,
 it happened some months ago yet.
 It is some days that I'm receiving many list mails automatically put by
 gmail filter into spam folder...


​I always use gmail filters for lists, so checking Never send it to spam
option while creating relevant filter does the trick..

​Regards,​
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Re: [Users] vmware disks

2013-10-24 Thread Ekin Meroğlu
Hi Matt,

On Wed, Oct 23, 2013 at 5:51 PM, Matthew Booth mbo...@redhat.com wrote:

 The latest virt-v2v can convert a VMware OVA export.

 Matt


That's great news, thanks for letting us know...

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Re: [Users] vmware disks

2013-10-23 Thread Ekin Meroğlu
Hi,

On Thu, Oct 17, 2013 at 2:33 PM, Richard W.M. Jones rjo...@redhat.comwrote:


 On Thu, Oct 17, 2013 at 10:14:11AM +0100, supo...@logicworks.pt wrote:
  Hi, it's possible to import a vmware disk into ovirt?

 It depends.

 If you're using an ESX server, then yes, pretty easily with
 virt-v2v.


If you only have the images of the virtual machine but not the ESX server
itself, it is possible use a dirty scenario:

- first convert the virtual machine to a local libvirt / virtmanager based
KVM environment. [1] includes a brief how-to..
- then use virt-v2v to import this new guest to an ovirt import domain.
 The most complete documentation on v2v I could find is here [2]


 If it's just a disk image, that's more difficult.  I think the
 latest virt-v2v can do it.  (Matt?)


It can not AFAIK, but this would be a very welcome addition...

[1]
http://www.dna.org/2011/02/converting-from-vmware-to-linux-kvm/

[2]
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/V2V_Guide/index.html

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