[ovirt-users] Hyper converged network setup

Tailor, Bharat bharat at synergysystemsindia.com
Wed Sep 13 11:40:41 UTC 2017 

I am not using any DNS server. I have made entries in /etc/hosts for all
Nodes and for engine VM also.

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 5:02 PM, Donny Davis <donny at fortnebula.com> wrote:

> 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
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
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>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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