Open Source Virtualization Solution Ovirt Experiment (1.ovirt-engine installation)

First, the history of Rhev

The first qumranet company developed KVM Technology in September 2008, Red Hat bought qumranet company May Red Hat and BMC software companies, Eucalyptus systems, HP, IBM, Intel Corporation, Inc. for $107 million. The SUSE company announced the Alliance to form an open virtualization consortium. The alliance aims to promote the application of open virtualization technologies such as kernel-based virtual machines (KVM).

In 2011, with the release of the new operating system Red Hat Enterprise Linux 6, Red Hat completely abandoned the idea of open source Xen as a virtualization platform and started supporting KVM as a hypervisor.

Ii. Components of Rhev

Rhev is divided into rhev-h and rhev-m,

Rhev-h is red Hat Enterprise virtualization Hypervisor, that is, the carrier of the virtual machine, plainly, is a set of RHEL+KVM lite, and then comes with some KVM management tools.

Rhev-m is the Red Hat Enterprise virtualization Manager, the management machine that manages RHEV-H and the virtual machines running on them. We access the rhev-m through the browser, the advantage of this structure is that when managing the data center, as long as a set of management procedures can be, do not need everyone to install complex client software.

Guest: a virtual system

Hypervisor: Intermediate software layer between physical hardware and virtual system, is the core of virtualization technology.

Host: A physical host or an operating system that provides hypervisor

Native Virtualization: Native virtualization, which can also be called full virtualization (fully virtualization). In this virtualization, the virtual system does not need to be modified, it can be run directly on the hypervisor, and most of the instructions do not need to be modified, can be executed directly on the physical CPU (not like the simulator need to translate), however, hypervisor need to intercept some "sensitive" CPU instructions (some privileged instructions, such as cleaning up memory) and modifying these instructions into a secure instruction re-execution, so this mode requires CPU support, AMD needs to have Amd-v,intel needs vt-x.

Paravirtualization: Semi-virtualized, in this mode, Hypervisor provides a set of interfaces to the virtual system, the virtual system can better interact with hypervisor. Therefore, this mode requires the modification of the virtual system, or the installation of a specific hypervisor-related driver. Semi-virtualized and full virtualization do not conflict, in virtual machines in fully virtualized KVM, you can also install KVM drivers to enhance disk IO and network io

Semi-virtualized hardware support is not required for the CPU.

KVM is fully virtualized, which means that KVM-based virtual machines cannot be run if the CPU is not supported, but KVM can also use some of the para-virtualization technologies to enhance IO performance.

Third, what is Ovirt

Ovirt is an open source solution for Rhev, Ovirt's relationship with Rhev is equivalent to the Centos,ovirt function of Rhel and ovirt-engine with Rhev-m and Ovirt-node functions.

Iv. introduction of the experimental environment

host name	ip	function	remarks
ovirt-engine.example.com	192.168.58.10	ovirt-engine	memory at least 4G
ovirt-node1.example.com	192.168.58.11	ovirt-nod E	 
ovirt-node2.example.com	192.168.58.12	ovirt-node	 
storage	192.168.58.58	share-storage

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Five, the experimental steps

1. Preparing the virtual machine (procedure omitted)

2. Configure the network address

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Systemctl Restart Network after reconnecting

3. Configure Host Name

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4. Update the System software package

Yum Update–y

5. Installing Ovirt-engine

Yum Install Http://resources.ovirt.org/pub/yum-repo/ovirt-release36.rpm–y

Yum Install Ovirt-engine–y

6. Set Ovirt-engine

Engine-setup

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Configuration information Confirmation

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After the configuration is complete, you can access the Administration page via Https://hostip/vorit-engine

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The management portal is the VM management entry and you can log in by entering the password set for admin at setup

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This is the Ovirt-engine console, a graphical configuration to create data centers, clusters, virtual machines and other resources to this ovirt-engine installation is complete.

Open Source Virtualization Solution Ovirt Experiment (1.ovirt-engine installation)