[ovirt-users] Hyper converged network setup

Wed Sep 13 11:32:16 UTC 2017

Bharat,

Are you using DNS for host names or /etc/hosts

I personally place the engines hostname with ip address in /etc/hosts on
all the hypervisors in case my DNS services go down.
I also put the hypervisors in /etc/hosts too

Hope this helps.

On Wed, Sep 13, 2017 at 6:04 AM, Yaniv Kaul <ykaul at redhat.com> wrote:

>
>
> On Wed, Sep 13, 2017 at 8:42 AM, Tailor, Bharat <
> bharat at synergysystemsindia.com> wrote:
>
>> Hi Charles & Donny,
>>
>> Thank you so much.
>>
>> @Donny my 3rd node's IP is 192.168.100.17(Mentioned wrong in above mail).
>> I was trying to install ovirt ova on test2.localdomain. I've cleared all
>> the steps and at last I got a message like "Engine is still unreachable".
>> Kindly help me to troubleshoot it.
>>
>> @Ykaul How can I register myself in mailing list?
>>
>
> http://lists.ovirt.org/mailman/listinfo/users
>
> Y.
>
>
>>
>> Regrards
>> Bharat Kumar
>>
>> G15- Vinayak Nagar complex,Opp.Maa Satiya, ayad
>> Udaipur (Raj.)
>> 313001
>> Mob: +91-9950-9960-25
>>
>>
>>
>>
>>
>> On Wed, Sep 13, 2017 at 3:06 AM, Charles Kozler <ckozleriii at gmail.com>
>> wrote:
>>
>>> Bharat -
>>>
>>> 1. Yes. Will need to configure switch port as a trunk and setup your
>>> VLANs and VLAN ID's
>>> 2. Yes
>>> 3. You can still access the hosts. The engine itself crashing or being
>>> down wont stop your VMs or hosts or anything (unless fencing). You can use
>>> virsh
>>> 4. My suggestion here is start immediately after a fresh server install
>>> and yum update. Installer does a lot and checks a lot and wont like things:
>>> ex - you setup ovirtmgmt bridged network yourself
>>> 5. Yes. See #1, usually what I do is each ovirt node I have I set an IP
>>> of .5, then .6, and so on. This way I can be sure my network itself is
>>> working before adding a VM and attaching that NIC to it
>>>
>>> On Tue, Sep 12, 2017 at 4:41 PM, Donny Davis <donny at fortnebula.com>
>>> wrote:
>>>
>>>> 1. Yes, you can do this
>>>> 2. Yes, In linux it's called bonding and this can be done from the UI
>>>> 3. You can get around using the Engine machine if required with virsh
>>>> or virt-manager - however I would just wait for the manager to migrate and
>>>> start on another host in the cluster
>>>> 4.  The deployment will take care of everything for you. You just need
>>>> an IP
>>>> 5. Yes, you can use vlans or virtual networking(NSXish) called OVS in
>>>> oVirt.
>>>>
>>>> I noticed on your deployment machines 2 and 3 have the same IP. Might
>>>> want to fix that before deploying
>>>>
>>>> Happy trails
>>>> ~D
>>>>
>>>>
>>>> On Tue, Sep 12, 2017 at 2:00 PM, Tailor, Bharat <
>>>> bharat at synergysystemsindia.com> wrote:
>>>>
>>>>> Hi Charles,
>>>>>
>>>>> Thank you so much to share a cool stuff with us.
>>>>>
>>>>> My doubts are still not cleared.
>>>>>
>>>>>
>>>>>    1. What If I have only single Physical network adaptor? Can't I
>>>>>    use it for management network & production network both.
>>>>>    2. If I have two Physical network adaptor, Can I configure NIC
>>>>>    teaming as like Vmware ESXi.
>>>>>    3. What If my ovirt machine fails during production period? In
>>>>>    vmware we can access ESXi hosts and VM without Vcenter and do all the
>>>>>    stuffs. Can we do the same with Ovirt & KVM.
>>>>>    4. To deploy ovirt engine VM, what kind of configuration I'll have
>>>>>    to do on network adaptors? (eg. just configure IP on physical network or
>>>>>    have to create br0 for it.)
>>>>>    5. Can I make multiple VM networks for vlan configuration?
>>>>>
>>>>>
>>>>> Regrards
>>>>> Bharat Kumar
>>>>>
>>>>> G15- Vinayak Nagar complex,Opp.Maa Satiya, ayad
>>>>> Udaipur (Raj.)
>>>>> 313001
>>>>> Mob: +91-9950-9960-25
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Sep 12, 2017 at 9:30 PM, Charles Kozler <ckozleriii at gmail.com>
>>>>> wrote:
>>>>>
>>>>>>
>>>>>> Interestingly enough I literally just went through this same thing
>>>>>> with a slight variation.
>>>>>>
>>>>>> Note to the below: I am not sure if this would be considerd best
>>>>>> practice or good for something long term support but I made due with what I
>>>>>> had
>>>>>>
>>>>>> I had 10Gb cards for my storage network but no 10Gb switch, so I
>>>>>> direct connected them with some fun routing and /etc/hosts settings. I also
>>>>>> didnt want my storage network on a routed network (have firewalls in the
>>>>>> way of VLANs) and I wanted the network separate from my ovirtmgmt - and, as
>>>>>> I said, had no switches for 10Gb. Here is what you need at a bare minimum.
>>>>>> Adapt / change it as you need
>>>>>>
>>>>>> 1 dedicated NIC on each node for ovirtmgmt. Ex: eth0
>>>>>>
>>>>>> 1 dedicated NIC to direct connect node 1 and node 2 - eth1 node1
>>>>>> 1 dedicated NIC to direct connect node 1 and node 3 - eth2 node1
>>>>>>
>>>>>> 1 dedicated NIC to direct connect node 2 and node 1 - eth1 node2
>>>>>> 1 dedicated NIC to direct connect node 2 and node 3 - eth2 node2
>>>>>>
>>>>>> 1 dedicated NIC to direct connect node 3 and node 1 - eth1 node3
>>>>>> 1 dedicated NIC to direct connect node 3 and node 2 - eth2 node3
>>>>>>
>>>>>> You'll need custom routes too:
>>>>>>
>>>>>> Route to node 3 from node 1 via eth2
>>>>>> Route to node 3 from node 2 via eth2
>>>>>> Route to node 2 from node 3 via eth2
>>>>>>
>>>>>> Finally, entries in your /etc/hosts which match to your routes above
>>>>>>
>>>>>> Then, advisably, a dedicated NIC per box for VM network but you can
>>>>>> leverage ovirtmgmt if you are just proofing this out
>>>>>>
>>>>>> At this point if you can reach all of your nodes via this direct
>>>>>> connect IPs then you setup gluster as you normally would referencing your
>>>>>> entries in /etc/hosts when you call "gluster volume create"
>>>>>>
>>>>>> In my setup, as I said, I had 2x 2 port PCIe 10Gb cards per server so
>>>>>> I setup LACP as well as you can see below
>>>>>>
>>>>>> This is what my Frankenstein POC looked like:
>>>>>> http://i.imgur.com/iURL9jv.png
>>>>>>
>>>>>> You can optionally choose to setup this network in ovirt as well (and
>>>>>> add the NICs to each host) but dont configure it as a VM network. Then you
>>>>>> can also, with some other minor tweaks, use these direct connects as
>>>>>> migration networks rather than ovirtmgmt or VM network
>>>>>>
>>>>>> On Tue, Sep 12, 2017 at 9:12 AM, Tailor, Bharat <
>>>>>> bharat at synergysystemsindia.com> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> I am trying to deploy 3 hosts hyper converged setup.
>>>>>>> I am using Centos and installed KVM on all hosts.
>>>>>>>
>>>>>>> Host-1
>>>>>>> Hostname - test1.localdomain
>>>>>>>  eth0 - 192.168.100.15/24
>>>>>>> GW - 192.168.100.1
>>>>>>>
>>>>>>> Hoat-2
>>>>>>> Hostname - test2.localdomain
>>>>>>> eth0 - 192.168.100.16/24
>>>>>>> GW - 192.168.100.1
>>>>>>>
>>>>>>> Host-3
>>>>>>> Hostname - test3.localdomain
>>>>>>> eth0 - 192.168.100.16/24
>>>>>>> GW - 192.168.100.1
>>>>>>>
>>>>>>> I have created two gluster volume "engine" & "data" with replica 3.
>>>>>>> I have add fqdn entry in /etc/hosts for all host for DNS resolution.
>>>>>>>
>>>>>>> I want to deploy Ovirt engine self hosted OVA to manage all the
>>>>>>> hosts and production VM and my ovirt-engine VM should have HA enabled.
>>>>>>>
>>>>>>> I found multiple docs over internet to deply Self-hosted-engine-ova
>>>>>>> but I don't what kind of network configuration I've to do on Centos network
>>>>>>> card & KVM. As KVM docs suggest that I've to create a bridge network for
>>>>>>> Pnic to Vnic bridge. If I configure a bridge br0 for eth0 bridge that I
>>>>>>> can't see eth0 while deploying ovirt-engine setup at NIC card choice.
>>>>>>>
>>>>>>> Kindly help me to do correct configuration for Centos hosts, KVM &
>>>>>>> ovirt-engine-vm for HA enabled DC.
>>>>>>> Regrards
>>>>>>> Bharat Kumar
>>>>>>>
>>>>>>> G15- Vinayak Nagar complex,Opp.Maa Satiya, ayad
>>>>>>> Udaipur (Raj.)
>>>>>>> 313001
>>>>>>> Mob: +91-9950-9960-25
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Users mailing list
>>>>>>> Users at ovirt.org
>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at ovirt.org
>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>
>>>>>
>>>>
>>>
>>
>
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