Hi Kasturi,

I just tried to set, using the oVirt Engine UI, a fake gateway (different from 
the real one) for the ovirtmgmt network attached to the hosts.
After that, I set again the old and real gateway: it seems that, at the end, 
the new configuration has been stored correctly in the oVirt Engine environment.

[root@glu01 ~]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         gateway         0.0.0.0         UG    0      0        0 ens33
link-local      0.0.0.0         255.255.0.0     U     1002   0        0 ens33
link-local      0.0.0.0         255.255.0.0     U     1003   0        0 ens34
192.168.152.0   0.0.0.0         255.255.255.0   U     0      0        0 ens34
192.168.213.0   0.0.0.0         255.255.255.0   U     0      0        0 ens33

It seems that, finally, the ovirtmgmt network configuration has been updated 
with the right gateway value.

Thanks for your feedback.
Mauro

> Il giorno 04 set 2017, alle ore 09:48, Kasturi Narra <[email protected]> ha 
> scritto:
> 
> Hi Mauro,
> 
>      yes, i do know this problem of gateway disappearing but i am not sure 
> why that happens because in my case it was happening on only on one server. I 
> used to add the gateway again on that node. I am just waiting for some one to 
> reply.
> 
> Thanks
> kasturi
> 
> On Mon, Sep 4, 2017 at 1:02 PM, Mauro Tridici <[email protected] 
> <mailto:[email protected]>> wrote:
> Hi Kasturi,
> 
> thank you very much for your support and for the useful explanation.
> If possible, I would ask you if you know a way to correct the “missing 
> gateway” problem that I described in my previous message.
> 
> Thanks a lot,
> Mauro
> 
> 
>> Il giorno 04 set 2017, alle ore 08:51, Kasturi Narra <[email protected] 
>> <mailto:[email protected]>> ha scritto:
>> 
>> Hi Mauro,
>> 
>>        Creating distributed dispersed volumes are not supported from ovirt 
>> UI yet but you should be able to sync them if cluster is imported into the 
>> UI. same holds true for add / remove bricks on disperse and distribute 
>> disperse volumes.
>> 
>>        you wont be able to see bricks created because ovirt excepts them to 
>> be mounted at /rhgs/<brick-name>. What you could simply do is uncheck the 
>> check box in the 'Add brick' dialog and type in the path or you could mount 
>> your bricks at above said location and that would show all the available 
>> bricks on the host.
>> 
>>   Hope this helps.
>> 
>> Thanks
>> kasturi.
>> 
>> On Sat, Sep 2, 2017 at 7:16 PM, Mauro Tridici <[email protected] 
>> <mailto:[email protected]>> wrote:
>> Hi all,
>> 
>> I just started my first Ovirt Engine deploy using a dedicated (and 
>> separated) virtual machine.
>> I’m trying to create and manage a test Gluster cluster using 3 “virtual” 
>> hosts (hostnames are glu01, glu02, glu03)
>> 2 different networks have been defined on the hosts (192.168.213.0/24 
>> <http://192.168.213.0/24> for management network and 192.168.152.0/24 
>> <http://192.168.152.0/24> for gluster network).
>> Ovirt engine deploy completed without any problem, the hosts have been added 
>> easily using ovirtmgmt network (bridgeless mgmt network) and ovirtgluster 
>> (bridgeless gluster network).
>> 
>> Everything seems to be ok for this first deploy, but I just noticed that the 
>> gateway is missing on the target hosts:
>> 
>> [root@glu01 ~]# route
>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
>> link-local      0.0.0.0         255.255.0.0     U     1002   0        0 ens33
>> link-local      0.0.0.0         255.255.0.0     U     1003   0        0 ens34
>> 192.168.152.0   0.0.0.0         255.255.255.0   U     0      0        0 ens34
>> 192.168.213.0   0.0.0.0         255.255.255.0   U     0      0        0 ens33
>> 
>> [root@glu02 ~]# route
>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
>> link-local      0.0.0.0         255.255.0.0     U     1002   0        0 ens33
>> link-local      0.0.0.0         255.255.0.0     U     1003   0        0 ens34
>> 192.168.152.0   0.0.0.0         255.255.255.0   U     0      0        0 ens34
>> 192.168.213.0   0.0.0.0         255.255.255.0   U     0      0        0 ens33
>> 
>> [root@glu03 ~]# route
>> Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
>> link-local      0.0.0.0         255.255.0.0     U     1002   0        0 ens33
>> link-local      0.0.0.0         255.255.0.0     U     1003   0        0 ens34
>> 192.168.152.0   0.0.0.0         255.255.255.0   U     0      0        0 ens34
>> 192.168.213.0   0.0.0.0         255.255.255.0   U     0      0        0 ens33
>> 
>> Due to this problem I cannot reach internet from ens33 nic (management 
>> network).
>> I just tried to add the gateway in ifcfg-ens33 configuration file but 
>> gateway disappear after host reboot. 
>> 
>> [root@glu01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33
>> # Generated by VDSM version 4.19.28-1.el7.centos
>> DEVICE=ens33
>> ONBOOT=yes
>> IPADDR=192.168.213.151
>> NETMASK=255.255.255.0
>> BOOTPROTO=none
>> MTU=1500
>> DEFROUTE=no
>> NM_CONTROLLED=no
>> IPV6INIT=yes
>> IPV6_AUTOCONF=yes
>> 
>> The oVirt Engine network configuration is the following one:
>> 
>> [host glu01]
>> ens33 -> ovirtmgmt (192.168.213.151, 255.255.255.0, 192.168.213.2)
>> ens34 -> ovirtgluster (192.168.152.151, 255.255.255.0)
>> 
>> [host glu02]
>> ens33 -> ovirtmgmt (192.168.213.152, 255.255.255.0, 192.168.213.2)
>> ens34 -> ovirtgluster (192.168.152.152, 255.255.255.0)
>> 
>> [host glu03]
>> ens33 -> ovirtmgmt (192.168.213.153, 255.255.255.0, 192.168.213.2)
>> ens34 -> ovirtgluster (192.168.152.153, 255.255.255.0)
>> 
>> Do you know the right way to set the gateway IP on all hosts?
>> 
>> Just two last questions: I was able to import an existing gluster cluster 
>> using oVirt Engine, but I’m not able to create a new volume because:
>> 
>> - I can’t select a distributed disperse volume configuration from oVirt 
>> Engine volume creation window
>> - i can’t see the bricks to be used to create a new volume (but I can import 
>> an existing volume without problem).
>> 
>> Is there something that I can do to resolve the issues and complete my first 
>> experience with oVirt?
>> 
>> Thank you very much,
>> Mauro T.
>> 
>> 
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>> 
> 
> 
> 


-------------------------
Mauro Tridici

Fondazione CMCC
CMCC Supercomputing Center
presso Complesso Ecotekne - Università del Salento -
Strada Prov.le Lecce - Monteroni sn
73100 Lecce  IT
http://www.cmcc.it

mobile: (+39) 327 5630841
email: [email protected]

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