02--vsphere basic knowledge of Vsphere Deployment series

The Vsphere Deployment Series 02--Get Started

First, about server virtualization

Cloud computing is a huge trend of the Times, server virtualization is the tidal stream of the river.

Virtualization technology realizes the logical abstraction and unified representation of physical resources, through which it can improve resource utilization, and can deploy resources quickly and flexibly according to the change of user's business requirements. Currently, the mainstream virtualization vendors are VMware, Citrixt and Microsoft three, and their corresponding server virtualization products are vsphere, SCVMM, XenServer, respectively. In addition, open source KVM virtualization based on Linux system also has a wide range of applications.

Each virtualization product has its own virtualization Manager (Hypervisor), and its management tools--many times, both are integrated, such as VMware's ESXi and Citrixt XenServer, Microsoft's Hyperv and open source KVM simply refer to the hypervisor itself, which is hosted on both Windows Server and Linux systems, and represents a semi-virtualized technology that is fundamentally different from the full virtualization technology represented by the previous two.

Second, about vsphere

When we say VMware virtualization, the first thing that comes to mind is its virtualized operating system ESXi (vsphere 3rd generation, part 4th generation of products called ESX), and in fact, VMware's virtualization includes content (components) to be broader.

VMware's virtualization products refer to VMware vSphere. vsphere transforms the data center into a cloud infrastructure primarily through virtualization, providing self-service deployment and provisioning capabilities through virtualization, delivering IT infrastructure as services. Vsphere is a monolithic architecture rather than a single product.

Vsphere is based on the native architecture of Esx/esxi server, allowing multiple ESX servers to concurrently burden more virtual machines. The main part consists of 2 parts:

One is the ESXi hypervisor in the Virtualization Manager section, which does not need to rely on operating system support (which is itself an extremely thin Linux kernel +hypervisor). ESXi provides a virtual layer that abstracts the processor, memory, storage, and network connection resources of a physical host into multiple parallel runs in a secure, independent mode. Virtual machines. In this architecture, applications running in virtual machines can access the CPU, memory, disk, and network interfaces (the full virtualization technology mentioned above) without direct access to the underlying hardware devices.

The second is the VMware VCenter for consolidating and managing the virtualization manager. Vcenter is the primary management platform for VMware vsphere, and many of the advanced features of vsphere can be configured only under Vcenter, and many of Vsphere's management modules can only be integrated and installed in the vcenter environment and cannot be run independently. The management of Vcenter enables management of one or more VMware vsphere configurations. Vcenter can be installed on the operating system of the physical machine or on the operating system of the virtual machine. All vcenter operations are implemented through the vsphere client and vsphere Web client (vSphere5.0). VSphere client can also directly connect and manage a single ESXi host.

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▲vsphere Basic Architecture

Third, vsphere Suite

The above should be very clear, but once the previous officer net download the corresponding software, beginners will probably confused, because vsphere software naming is very unreasonable. The following is a description of vsphere 5.5 as an example.

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▲vsphere Part 5.5 software list

1, the name of VMWARE-VMVISOR-INSTALLER-XXXXXX is the installation of ESXi ISO file, directly installed on the physical machine, the field Updatexx represents its updated version number, similar to the concept of WINDWOS system patch version;

2, the name of VMWARE-VIMSETUP-ALL-XXXXXX is the installation of Vcenter server ISO file, installed on the Windows Server operating system (such as Windows Server R2 SP1);

3, the name of VMWARE-VCENTER-SERVER-APPLIANCE-XXXXXX.XXXXX_OVFXX.OVF is the VCenter server Appliance import file, Center server Appliance is a pre-configured Linux-based virtual machine, can be seen as a simple version of the vcenter Server, in the vsphere client through the deployment of the OVF module can be used directly after the import;

4. The vsphere client client file, named Vmware-viclient-all-xxxxxxxx, is installed on the Windows operating system (such as Windows 7 SP1) for direct connection to ESXi or legacy ESX hosts or indirectly through The client application that the VCenter Server is connected to. ；

5, the name with tools is the tools file, with MIB is the MIB library file, used to read SNMP, MHM is the Muti-hypervisor manager program. These components are rarely used in regular enterprise virial.

The vmware-vimsetup-all-5.5.0-1312299.iso image of Vcenter Server 5.5 is a 3.23GB-size package containing vcenter Single sign on, vcenter Inventory Service, vcenter server, VMware vcenter Orchestrator, Microsoft SQL Server R2 Express and Vsphere Client, vsphere Components such as the Web client, and vsphere Update Manager, vsphere ESXi Dump Collector, vsphere Syslog Collector, vsphere Auto Deploy, vsphere A Uthentication Proxy and other tools. For the use of the software, please check the official information.

During installation, VCenter server requires a Windows domain-controlled environment for Microsoft, as well as a SQL Server database (Microsoft SQL Server R2 Express, which can be integrated in the software package, to deploy a small-scale environment, if large, You must install either the Standard Edition or the Enterprise Edition of SQL Server version R2 or later for standalone installation.

In the following ISO images of the four vmware-vmvisor-installer-xxxxxx, one is the regular version downloaded from the VMware website, and the other three are special, with the dell_customized typeface in the name. These three mirrors are Dell-made (first edition, U2, U3 three), which involves exsi compatibility issues with some brand-name machines.

Four, ESXI fixed plate

Beginners will encounter such problems, the installation of ESXi host on a server, found that half can not be installed-the common error hint is not to find the hard disk or can not find the network card-this situation is basically the Esxi5.5 version and the server hardware incompatibility caused. This is the time to consider a custom version of ESXi using the server brand.

Such problems, such as Dell, HP, Lenovo and other servers have occurred, mainly because the server's raid and other information is not recognized by EXSI. Need to be solved by each manufacturer. In Dell, for example, after a new version of ESXi (such as Update 1 to update 2) comes out, Dell will publish the corresponding customized version on the official website for users to download and use on their own.

The download Summary page for DELL ESXi customization is linked below:

Http://www.dell.com/support/article/hk/en/hkdhs1/SLN290857/zh

This article is from the "One Tree Qing Jin" blog, please be sure to keep this source http://sunshyfangtian.blog.51cto.com/1405751/1783577

02--vsphere basic knowledge of Vsphere Deployment series