VMware Vsphere virtualization
https://www.cnblogs.com/karl-python/p/9102919.html
- Overall architecture
The main components:
1）ESXi
Underlying virtualization layer for the virtual servers into physical resource pool to provide management interfaces to facilitate management of other components to manage, in fact, morphology is iso file, statue bootable CD-ROM can be installed directly on the bare server;
Installed on a physical server, it is actually a linux kernel of the operating system, only the ESXi installation later you can create a virtual machine on top. Vmware workstation can be understood as the tops of your desktop, but not ESXi running on the operating system (as is the operating system itself) and a direct call to the virtual machine hardware resources
2）vsphere client
Client software is installed on the windows system, the corresponding input ESXi host can manage login ip, ip can enter the vCenter server that manages the entire data center
3）vCenter
On the ESXi host server-side software centrally managed, installed 2008R2 or above operating system windows server, through SQL 2008R2 or higher version of the database (other databases also have Version) maintain information in the data center functional components, but also installed in the version of Linux environment
4）vsphere web client
Enter vcenter where the server through a browser ip, enter the management interface for the entire virtualized data center, after vsphere5.0, VMware in the gradual weakening of the role of vsphere client, and now many advanced features (such as Enhanced vMotion) only web client in realization
- Several major virtualization
ESXi是VMware公司研发的虚拟机服务器，ESXi已经实现了与Virtual Appliance Marketplace的直接整合，使用户能够即刻下载并运行虚拟设备。这为即插即用型软件的交付与安装提供了一种全新和极其简化的方式。通过iso镜像（比如VMWare ESXi 5.5.iso）在服务器上安装ESXi虚拟化服务，接着在本地PC机（win10）上安装VMware vSphere Clent客户端工具去连接远程的ESXi服务器，然后在VMware vSphere Clent工具界面里进行虚拟机的创建和管理。
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XenServer是思杰公司基于Xen的虚拟化服务器，Citrix XenServer是一种全面而易于管理的服务器虚拟化平台，基于强大的Xen Hypervisor程序之上。
通过iso镜像（比如XenServer-7.1.1-
install
-
cd
.iso）在服务器上安装XenServer服务，接着在本地PC机（win10）上安装Citrix XenCenter客户端
工具去连接远程的XenServer服务器，然后在Citrix XenCenter工具界面里进行虚拟机的创建和管理。
-------------------------------------------------------------------------------------------------------------------------
KVM（Kernel-based Virtual Machine）是一个开源的系统虚拟化模块，自Linux 2.6.20之后集成在Linux的各个主要发行版本中。它使用Linux自身
的调度器进行管理，所以相对于Xen，其核心源码很少。KVM目前已成为学术界的主流VMM之一。KVM的虚拟化需要硬件支持（如Intel VT技术或者AMD V技术)，
是基于硬件的完全虚拟化。而Xen早期则是基于软件模拟的Para-Virtualization，新版本则是基于硬件支持的完全虚拟化。但Xen本身有自己的进程调度器，
存储管理模块等，所以代码较为庞大。广为流传的商业系统虚拟化软件VMware ESX系列是基于软件模拟的Full-Virtualization。
KVM虚拟化部署有以下几种方法：
方法一：通过自身的virt-manager工具进行虚拟机的创建和管理
方法二：通过WebVirtMgr工具进行虚拟机的创建和管理
方法三：通过OpenStack工具进行虚拟机的创建和管理。
- Overall architecture
The main components:
1）ESXi
Underlying virtualization layer for the virtual servers into physical resource pool to provide management interfaces to facilitate management of other components to manage, in fact, morphology is iso file, statue bootable CD-ROM can be installed directly on the bare server;
Installed on a physical server, it is actually a linux kernel of the operating system, only the ESXi installation later you can create a virtual machine on top. Vmware workstation can be understood as the tops of your desktop, but not ESXi running on the operating system (as is the operating system itself) and a direct call to the virtual machine hardware resources
2）vsphere client
Client software is installed on the windows system, the corresponding input ESXi host can manage login ip, ip can enter the vCenter server that manages the entire data center
3）vCenter
On the ESXi host server-side software centrally managed, installed 2008R2 or above operating system windows server, through SQL 2008R2 or higher version of the database (other databases also have Version) maintain information in the data center functional components, but also installed in the version of Linux environment
4）vsphere web client
Enter vcenter where the server through a browser ip, enter the management interface for the entire virtualized data center, after vsphere5.0, VMware in the gradual weakening of the role of vsphere client, and now many advanced features (such as Enhanced vMotion) only web client in realization
- Several major virtualization
ESXi是VMware公司研发的虚拟机服务器，ESXi已经实现了与Virtual Appliance Marketplace的直接整合，使用户能够即刻下载并运行虚拟设备。这为即插即用型软件的交付与安装提供了一种全新和极其简化的方式。通过iso镜像（比如VMWare ESXi 5.5.iso）在服务器上安装ESXi虚拟化服务，接着在本地PC机（win10）上安装VMware vSphere Clent客户端工具去连接远程的ESXi服务器，然后在VMware vSphere Clent工具界面里进行虚拟机的创建和管理。
-------------------------------------------------------------------------------------------------------------------------
XenServer是思杰公司基于Xen的虚拟化服务器，Citrix XenServer是一种全面而易于管理的服务器虚拟化平台，基于强大的Xen Hypervisor程序之上。
通过iso镜像（比如XenServer-7.1.1-
install
-
cd
.iso）在服务器上安装XenServer服务，接着在本地PC机（win10）上安装Citrix XenCenter客户端
工具去连接远程的XenServer服务器，然后在Citrix XenCenter工具界面里进行虚拟机的创建和管理。
-------------------------------------------------------------------------------------------------------------------------
KVM（Kernel-based Virtual Machine）是一个开源的系统虚拟化模块，自Linux 2.6.20之后集成在Linux的各个主要发行版本中。它使用Linux自身
的调度器进行管理，所以相对于Xen，其核心源码很少。KVM目前已成为学术界的主流VMM之一。KVM的虚拟化需要硬件支持（如Intel VT技术或者AMD V技术)，
是基于硬件的完全虚拟化。而Xen早期则是基于软件模拟的Para-Virtualization，新版本则是基于硬件支持的完全虚拟化。但Xen本身有自己的进程调度器，
存储管理模块等，所以代码较为庞大。广为流传的商业系统虚拟化软件VMware ESX系列是基于软件模拟的Full-Virtualization。
KVM虚拟化部署有以下几种方法：
方法一：通过自身的virt-manager工具进行虚拟机的创建和管理
方法二：通过WebVirtMgr工具进行虚拟机的创建和管理
方法三：通过OpenStack工具进行虚拟机的创建和管理。