From Eric.Wong at solvians.com Thu Mar 19 14:04:11 2015 Content-Type: multipart/mixed; boundary="===============6449146340858745578==" MIME-Version: 1.0 From: Eric Wong To: users at ovirt.org Subject: [ovirt-users] Hosted Engine config in our hardware environment Date: Thu, 19 Mar 2015 18:04:04 +0000 Message-ID: <87E152BF0D55124F8311754D69D209F67BE51E32@MSEX-01-FRA9.corp.solvians.com> --===============6449146340858745578== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable --_000_87E152BF0D55124F8311754D69D209F67BE51E32MSEX01FRA9corps_ Content-Type: text/plain; charset=3D"iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello oVirt guru out there: I want to seek some advice on upgrade path for our oVirt management vm conf= =3D iguration. We have been using oVirt for over 3 years. When we first setup= =3D oVirt environment, Hosted Engine componment did not exist. Our question i= =3D s should we migrate our current configuration to use Hosted Engine? First let me give an overview of our configuration. We have blade servers = =3D in 2 separate racks. D1 & X1. Each side has 10 blades. Storage is iSCSI = =3D SAN. Inside our oVirt 3.5.0.1-1.el6 installation, it is configured with 2 data c= =3D enters. D1 & X1. Each datacenter has the 10 blades for that side. The ma= =3D nagement function of oVirt (oVirt web console) is running off 2 VMs, ovirt-= =3D mgmt-1 on D1, and ovirt-mgmt-2 on X1. We have keepalived to maintain a flo= =3D wing IP for the oVirt management console. The keepalived script makes sure= =3D only one copy of ovirt-engine is running at any time. It can be on D1 or = =3D X1. The mgmt VMs have Postgresql setup in replication mode. In case one o= =3D f the mgmt vm failed, the other mgmt vm on the other rack can pick up the m= =3D gmt role. Both mgmt VMs can see all blades and SAN resources on D1 & X1. This configuration has been working well for us. The drawback is if both o= =3D virt mgmt vm crashed, we will not be able to start them or make any change = =3D to the ovirt environment. It is because the mgmt VMs are running within th= =3D e oVirt domain. We tried to upgrade our configuration to Hosted Engine configuration. From= =3D what I understand, the Hosted Engine will run in a separate storage domain= =3D . In both times we tried to upgrade to Hosted Engine, they both failed dur= =3D ing export and import of current configuration. I think my questions are: - will the Hosted Engine model works in our hardware configuration. With h= =3D ardware in 2 racks, D1 & X1. Can a single Hosted Engine manage hardware on= =3D both sides? - How can we achieve redundancy when running Hosted Engine? We need to hav= =3D e management capibility in case one side completely failed. Thanks in advance. Eric --_000_87E152BF0D55124F8311754D69D209F67BE51E32MSEX01FRA9corps_ Content-Type: text/html; charset=3D"iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hello oVi= rt=3D guru out there:

I want to seek some advice on upgrade path for ou= r =3D oVirt management vm configuration. We have been using oVirt for over = =3D 3 years. When we first setup oVirt environment, Hosted Engine componment did not exist. Our question is should we mi= =3D grate our current configuration to use Hosted Engine?

First l= et=3D me give an overview of our configuration. We have blade servers in 2= =3D separate racks. D1 & X1. Each side has 10 blades. St= =3D orage is iSCSI SAN.

Inside our oVirt 3.5.0.1-1.el6 installation, it is configured wit= =3D h 2 data centers. D1 & X1. Each datacenter has the 10 blade= =3D s for that side. The management function of oVirt (oVirt web console)= =3D is running off 2 VMs, ovirt-mgmt-1 on D1, and ovirt-mgmt-2 on X1. We have keepalived to maintain a flowing IP for the oVirt man= =3D agement console. The keepalived script makes sure only one copy of ov= =3D irt-engine is running at any time. It can be on D1 or X1. The m= =3D gmt VMs have Postgresql setup in replication mode. In case one of the mgmt vm failed, the other mgmt vm on the other rack can pi= =3D ck up the mgmt role. Both mgmt VMs can see all blades and SAN&nb= =3D sp;resources on D1 & X1.

This configuration has been working well for us. The drawback is= =3D if both ovirt mgmt vm crashed, we will not be able to start them or make a= =3D ny change to the ovirt environment. It is because the mgmt VMs are ru= =3D nning within the oVirt domain.

We tried to upgrade our configuration to Hosted Engine configuration. = =3D From what I understand, the Hosted Engine will run in a separate stor= =3D age domain. In both times we tried to upgrade to Hosted Engine, = =3D they both failed during export and import of current configuration.

I think my questions are:

- will the Hosted Engine model works in our hardware configuration. &n= =3D bsp;With hardware in 2 racks, D1 & X1. Can a single Hosted Engine= =3D manage hardware on both sides?

- How can we achieve redundancy when running Hosted Engine? = =3D We need to have management capibility in case one side completely fai= =3D led.

Thanks in advance.

Eric

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