(1) Cloud computing technology learning - virtualized vSphere learning

Virtualization works by running a program called a hypervisor directly on top of the physical server's hardware or host operating system（Hypervisor）的虚拟化系统.通过虚拟机管理程序,Multiple operating systems can run concurrently on a single physical server,Shared server hardware resources.

虚拟机管理程序Hypervisor一般分为两类：类型1（裸金属架构）和类型2（寄居架构）.

类型1The hypervisor runs directly on top of the hardware,也称为裸金属架构（Bare Metal Architecture）,如VMware ESXi、微软Hyper-V、开源的KVM（Linux内核的一部分）和Xen等.

类型2A hypervisor requires the host to have an operating system installed,Provided by the host operating systemI/ODevice support and memory management,Also known as sojourn architecture（Hosted Architecture）,如VMware Workstation、Oracle VM Virtualbox和QEMU等.

                  

 vSphereNot a single piece of software,Rather, it is a virtualization solution consisting of multiple pieces of software,If vague,vSphere就是ESXI,只是叫法不同,But strictly speaking, the two are different,简单来说：

1、ESXi只是vSphere里的一个组件,vSphere 的两个核心组件是ESXi和vCenter Server,vSphere是包含了ESXi.

2、VMware vSphere 有各种版本,而我们平常说的ESXi Free(免费)version strictly speaking：指的应该是 VMware vSphere Hypervisor 这个.

3、通常VMware vSphere又称ESX,VMware vSphere Hypervisor又称ESXi,ESXi功能上比ESX少一点.

VMware ESXi 安装文件可以从VMware的官方网站上直接下载（A valid email address is required when registering）,下载得到的是一个iso 文件,可以刻录成光盘或量产到U盘使用,由于ESXi 本身就是一个操作系统(Linux内核),So use it to boot the system during initial installation;

vSphere 的两个核心组件是ESXi和vCenter Server.

ESXi是用于创建并运行虚拟机和虚拟设备的虚拟化平台.VMware ESXiIs a hypervisor installed on a physical server,Used to manage the underlying hardware resources.安装ESXiThe physical server is called ESXi主机,ESXiThe host is the foundation and core of the virtualization architecture,ESXiMultiple operating systems can run on a single physical server.

vCenter Server是一项服务,用于管理网络中连接的多个主机,并将主机资源池化.

ESXiis installed directly on the physical machine,是采用LinuxA virtualization-specific operating system for the kernel.EsxiA host is a physical host where a physical machine really exists（Of course it can also be a virtual machine）,In fact, it is a computer with a system installed.ESXI是一个系统,就跟windows,linuxThe same system as a system.

Win10系统安装了VMware Workstation,然后创建一台虚拟机,安装了VMware ESXi 6.7系统.之后通过web页面创建2台虚拟机,Because managing virtual machines in the browser is very inconvenient,因此现在使用VMRCControl and manage these two virtual machines.

 1.首先下载VMRC 官网链接,然后进行安装.

2.在浏览器中输入 vmrc://192.168.233.200/?moid=1

这里的ip是ESXi的地址,moid后面的数字id是虚拟机的id,这个idThe acquisition will be discussed later,Then a pop-up box will pop up to enter your username and password,means loginESXi的用户名和密码

 After the connection is successful, the command line management interface of the virtual machine is displayed,It is more convenient than controlling in the browser.

 3.How to get a virtual machineid？如果少,Usually you can guess,但是在真正的项目中,id需要查询.The query method is usedPowerCLI查询.

Win10The system can download the installer,然后双击进行安装,Then open the desktop icon,Wait for a while for the loading to complete,便可以使用

 另外一种方式是通过Powershell启动：在线安装,It's almost impossible if you don't get over the wall,So take offline installation,先下载安装包官网地址 .步骤如下,可以参考：通过微软PowerShell直接运行VMware PowerCLI

这里一定要注意：Unzip the entire contents of the compressed package to the required path,Then run the following commands to install and queryid

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

Import-Module VMware.PowerCLI

Connect-VIServer -Server 192.168.233.200 -Protocol https -u 'root' -Password '123'

Get-VM

Get-VM | ft -Property Name,ID

VirtualMachineThe numbers that follow are virtual machinesid

Various problems were encountered during the process,Find a few better links below,Another problem is the linkserver的时候出错 Connect-VIServer Error: Invalid server certificate,即使设置为false也无效,后面把protocol改为https即可解决问题.

 ESXI获取虚拟机的moid,并使用VMRCLog in to the remote virtual machine

Win10安装VMware PowerCLI

Unable to install NuGet provider for PowerShell