[ovirt-users] hosted-engine --check-liveliness returns "Hosted Engine is not up!" for host other cluster

[omprakashp]

Hi ,

I am just getting started with Ovirt. I have setup 3 Ovirt-Nodes(all on 
physical host) and deployed self hosted engine with iscsi storage on one of the 
host.

On engine ui, i have create two Clusters(C1, C2) and Engine  is running in C1. 

While executing "hosted-engine --check-liveliness" on hosts in C2 cluster, it 
says "Hosted Engine is not up!". Is this an issue? Or this means i have to 
deploy hosted engine in C2 cluster too.
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[ovirt-users] Re: oVirt + Gluster geo-replication

[femi adegoke]

Thanks Sahina for the quick reply & links.

Time to go do some reading!!
On Sep 7 2018, at 3:21 am, Sahina Bose  wrote:
>
> Did you see the 
> https://ovirt.org/develop/release-management/features/gluster/gluster-geo-replication/#create-a-new-geo-replication-session
>  ?
>
> You can set up a new session from oVirt only if you are managing the remote 
> (slave) gluster cluster from oVirt as well. Otherwise you can either use 
> gluster-ansible role (https://github.com/gluster/gluster-ansible-features) or 
> the cli 
> (https://docs.gluster.org/en/v3/Administrator%20Guide/Geo%20Replication/) to 
> do so.
>
> You can have 1 volume replicated to mulitple sites.
>
> On Fri, Sep 7, 2018 at 3:34 PM, femi adegoke  (mailto:ov...@fateknollogee.com)> wrote:
> > Hi Sahina,
> > https://ovirt.org/develop/release-management/features/gluster/gluster-geo-replication/
> >
> > Unfortunately, there isn't info on how to set this up.
> > Can you share with us any tips or info needed to do geo-rep between 2 sites?
> >
> > I also read an article that says geo-rep between 3 sites is possible?
> >
> > Thanks,
> > Femi
>
>
>
>
>
>
>
>
>

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[ovirt-users] Re: oVirt + Gluster geo-replication

[Sahina Bose]

Did you see the
https://ovirt.org/develop/release-management/features/gluster/gluster-geo-replication/#create-a-new-geo-replication-session
?

You can set up a new session from oVirt only if you are managing the remote
(slave) gluster cluster from oVirt as well. Otherwise you can either use
gluster-ansible role (https://github.com/gluster/gluster-ansible-features)
or the cli (
https://docs.gluster.org/en/v3/Administrator%20Guide/Geo%20Replication/) to
do so.

You can have 1 volume replicated to mulitple sites.

On Fri, Sep 7, 2018 at 3:34 PM, femi adegoke 
wrote:

> Hi Sahina,
> https://ovirt.org/develop/release-management/features/gluster/gluster-geo-
> replication/
>
> Unfortunately, there isn't info on how to set this up.
> Can you share with us any tips or info needed to do geo-rep between 2
> sites?
> I also read an article that says geo-rep between 3 sites is possible?
>
> Thanks,
> Femi
>
>
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[ovirt-users] oVirt + Gluster geo-replication

[femi adegoke]

Hi Sahina,
https://ovirt.org/develop/release-management/features/gluster/gluster-geo-replication/

Unfortunately, there isn't info on how to set this up.
Can you share with us any tips or info needed to do geo-rep between 2 sites?
I also read an article that says geo-rep between 3 sites is possible?

Thanks,
Femi

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[ovirt-users] Info about procedure to shutdown hosted engine VM

[Gianluca Cecchi]

Hello,
I'm writing a workflow regarding operations to do in case of planned
maintenance where one has to stop all hypervisors and so also hosted engine
vm.
At the moment I have imagined:
- shutdown all VMs but Hosted Engine
- put into maintenance and then shutdown all the hosts where Engine is not
running, one by one
- put environment in global maintenance

Now the next step would be to shutdown Hosted Engine VM.

As my workflow is for users not necessarily expert with Linux I was
thinking what would be an alternate method in respect of direct connect via
ssh as root user and run "shutdown -h now" on engine

Is there anything I can do from gui of web admin portal or cockpit of the
host where it is running?

Can I for example select to shutdown engine vm from web admin UI with a
certain delay in time so that I disconnect and wait?
Or anything I can do from cockpit of the host?

Of course I'm searching for a supported flow.

Thanks in advance,
Gianluca
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[ovirt-users] Re: oVirt 4.2 Limits

[Sandro Bonazzola]

2018-09-06 9:50 GMT+02:00 Markus Frei :

> Is there any reference stating what oVirt 4.2 is really capable of?
> - Maximum number of vCPU per VM
> - Maximum amount of RAM per VM
> - Maximum number of Disks per VM
> - Maximum amount of Disk Capacity per VM
> - Maximum number of Virtual Networks
> - Maximum number of Virtual Networks per VM
> ...
>

Couldn't find an oVirt documentation page for this, but here:
https://access.redhat.com/articles/906543
I found:
Maximum number of concurrently running virtual guests: unlimited
Maximum number of virtual CPUs in virtualized guest: 240
Maximum memory in virtualized guest: 4TB
Minimum memory in virtualized guest: N/A

Note that this is theoretical, it depends on your hardware.






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SANDRO BONAZZOLA

MANAGER, SOFTWARE ENGINEERING, EMEA R RHV

Red Hat EMEA 

sbona...@redhat.com


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[ovirt-users] Re: ovirt4 api create snapshot

[David David]

thanks!

7 сент. 2018 г. 11:35 пользователь "Ondra Machacek" 
написал:



On 09/06/2018 01:07 PM, David David wrote:
> hi
> i have a vm with 3 disks and i want to take a snapshot with only two disks
> how to do a multiple disk snapshot in the code below?
>
>  snap = snaps_service.add(
>  snapshot=types.Snapshot(
>  description=snap_description,
>  persist_memorystate=False,
>  disk_attachments=[
>  types.DiskAttachment(
>  disk=types.Disk(
>  id=disk_id
>  )
>  )
>  ]
>  ),
>  )

DiskAttachments is a list, so you just need to specify as much of the
disk as you need:


   snap = snaps_service.add(
   snapshot=types.Snapshot(
   description=snap_description,
   persist_memorystate=False,
   disk_attachments=[
   types.DiskAttachment(
   disk=types.Disk(
   id=disk_id
   )
   ),
   types.DiskAttachment(
   disk=types.Disk(
   id=disk_id_2
   )
   ),
   ]
   ),
   )

>
>
>
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[ovirt-users] Re: ovirt4 api create snapshot

[Ondra Machacek]

On 09/06/2018 01:07 PM, David David wrote:

hi
i have a vm with 3 disks and i want to take a snapshot with only two disks
how to do a multiple disk snapshot in the code below?

 snap = snaps_service.add(
 snapshot=types.Snapshot(
 description=snap_description,
 persist_memorystate=False,
 disk_attachments=[
 types.DiskAttachment(
 disk=types.Disk(
 id=disk_id
 )
 )
 ]
 ),
 )


DiskAttachments is a list, so you just need to specify as much of the 
disk as you need:


  snap = snaps_service.add(
  snapshot=types.Snapshot(
  description=snap_description,
  persist_memorystate=False,
  disk_attachments=[
  types.DiskAttachment(
  disk=types.Disk(
  id=disk_id
  )
  ),
  types.DiskAttachment(
  disk=types.Disk(
  id=disk_id_2
  )
  ),
  ]
  ),
  )





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[ovirt-users] Re: OVIRT 4.2.6: Deploying Errors + Official Repository Problems

[Sandro Bonazzola]

2018-09-06 9:18 GMT+02:00 :

> Hi all,
>
> We are trying to install the new release of OVIRT 4.2.6 on freshly
> installed machines based on RHEL 7.5.
>
> First of all, we encountered a strange error when install the
> ovirt-release42 package, it adds the necessary public repositories on
> /etc/yum.repos.d/, but after do that, sometimes when we try to update or
> install the other required packages we saw:
>
> Cannot find a valid baseurl for repo: ovirt-4.2/$releasever
>
> Why cannot configure this path variable automatically or what can
> influence to obtain this problem?
>

$releasever
You can use this variable to reference the release version of Red Hat
Enterprise Linux. Yum obtains the value of $releasever from the
distroverpkg=*value* line in the /etc/yum.conf configuration file. If there
is no such line in /etc/yum.conf, then yuminfers the correct value by
deriving the version number from the redhat-release-server package. The
value of $releasever typically consists of the major release number and the
variant of Red Hat Enterprise Linux, for example 6Client, or 6Server
Can you please run: rpm -qv redhat-release-server
to check you have redhat-release-server installed on your RHEL host?

If this happens randomly after the installation you may be suffering some
dns or other network related issue.






>
> In the other hand, when the repos sometimes are well configured and we can
> install the packages correctly, we found other problems related to the
> deploy of the ovirt-engine (OVA appliance based).
>
> Trying through cockpit, we found this error:
>
> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": true, "cmd":
> ["virt-install", "-n", "HostedEngineLocal", "--os-variant", "rhel7",
> "--virt-type", "kvm", "--memory", "16348", "--vcpus", "4", "--network",
> "network=default,mac=00:16:3e:05:c3:66,model=virtio", "--disk",
> "/var/tmp/localvmj4Y_f1/images/65f7f081-4d9e-43ae-
> 926f-25807f075f1d/a0a00e73-d3ea-4b9b-bd26-06fe189931f2", "--import",
> "--disk", "path=/var/tmp/localvmj4Y_f1/seed.iso,device=cdrom",
> "--noautoconsole", "--rng", "/dev/random", "--graphics", "vnc", "--video",
> "vga", "--sound", "none", "--controller", "usb,model=none", "--memballoon",
> "none", "--boot", "hd,menu=off", "--clock", "kvmclock_present=yes"],
> "delta": "0:00:02.122539", "end": "2018-09-06 00:44:18.089510", "msg":
> "non-zero return code", "rc": 1, "start": "2018-09-06 00:44:15.966971",
> "stderr": "/usr/lib/python2.7/site-packages/requests/__init__.py:91:
> RequestsDependencyWarning: urllib3 (1.21.1) or chardet (2.2.1) doesn't
> match a supported version!\n RequestsDepen
>  dencyWarning)\nERROR internal error: qemu unexpectedly closed the
> monitor: qemu: could not load PC BIOS 'bios-256k.bin'\nDomain installation
> does not appear to have been successful.\nIf it was, you can restart your
> domain by running:\n virsh --connect qemu:///system start
> HostedEngineLocal\notherwise, please restart your installation.",
> "stderr_lines": ["/usr/lib/python2.7/site-packages/requests/__init__.py:91:
> RequestsDependencyWarning: urllib3 (1.21.1) or chardet (2.2.1) doesn't
> match a supported version!", " RequestsDependencyWarning)", "ERROR internal
> error: qemu unexpectedly closed the monitor: qemu: could not load PC BIOS
> 'bios-256k.bin'", "Domain installation does not appear to have been
> successful.", "If it was, you can restart your domain by running:", " virsh
> --connect qemu:///system start HostedEngineLocal", "otherwise, please
> restart your installation."], "stdout": "\nStarting install...",
> "stdout_lines": ["", "Starting install..."]}
>
> Seem that it's related to Python packages versions (urllib3 and chardet),
> but we wasn't sure about that. How could workaround this problem? Trying to
> install this libraries manually?
>

Simone replied to this part in separate email



>
> We tried to found the same error over the Lists and Community, but we
> don't found some info about that.
>
> Thank for your help in advance.
>
> Regards!
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-- 

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MANAGER, SOFTWARE ENGINEERING, EMEA R RHV

Red Hat EMEA 

sbona...@redhat.com


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