Mastering VMware vSphere 6. Marshall Nick
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Название: Mastering VMware vSphere 6
Автор: Marshall Nick
Издательство: John Wiley & Sons Limited
Жанр: Зарубежная образовательная литература
isbn: 9781118925164
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8. Check the box marked Restart NTP Service To Apply Changes; then click OK.
9. Click OK to return to the vSphere Client. The Time Configuration area will update to show the new NTP servers.
Figure 2.15 Specifying NTP servers allows ESXi to automatically keep time synchronized.
You’ll note that using the vSphere Client to enable NTP this way also automatically enables NTP traffic through the firewall. You can verify this by noting an Open Firewall Ports entry in the Tasks pane or by clicking Security Profile under the Software menu and seeing an entry for NTP Client listed under Outgoing Connections.
Windows as a Reliable Time Server
You can configure an existing Windows server as a reliable time server by performing these steps:
1. Use the Group Policy Object Editor to navigate to Administrative Templates
2. Select the Enable Windows NTP Server Group Policy option.
3. Navigate to Administrative Templates
4. Double-click the Global Configuration Settings option, and select the Enabled radio button.
5. Set the AnnounceFlags option to 4.
6. Click the OK button.
Configuring Name Resolution
Just as time synchronization is important for your vSphere environment, so is name resolution. Although the vSphere dependency on name resolution is less than it was, there is still some functionality that may not work as expected without proper name resolution.
Configuring name resolution is a simple process in the vSphere Client:
1. Use the vSphere Desktop Client to connect directly to the ESXi host (or the vSphere Web Client, if you have vCenter Server running at this point).
2. Select the hostname from the inventory tree on the left, and then click the Configuration tab in the details pane on the right.
3. Select DNS And Routing from the Software menu.
4. Click the Properties link.
5. In the DNS And Routing dialog box, add the IP address(s) of your DNS server(s).
In this chapter I’ve discussed some of the decisions that you’ll have to make as you deploy ESXi in your datacenter, and I’ve shown you how to deploy these products using both interactive and unattended methods. In the next chapter, I’ll show you how to deploy VMware vCenter Server, a key component in your virtualization environment.
The Bottom Line
Understand ESXi compatibility requirements. Unlike traditional operating systems like Windows or Linux, ESXi has much stricter hardware compatibility requirements. This helps ensure a stable, well-tested product line that can support even the most mission-critical applications.
Master It You have some older servers onto which you’d like to deploy ESXi. They aren’t on the Compatibility Guide. Will they work with ESXi?
Plan an ESXi deployment. Deploying ESXi will affect many different areas of your organization – not only the server team but also the networking team, the storage team, and the security team. There are many issues to consider, including server hardware, storage hardware, storage protocols or connection types, network topology, and network connections. Failing to plan properly could result in an unstable and unsupported implementation.
Master It Name three areas of networking that must be considered in a vSphere design.
Master It What are some of the different types of storage that ESXi can be installed on?
Deploy ESXi. ESXi can be installed onto any supported and compatible hardware platform. You have three different ways to deploy ESXi: install it interactively, perform an unattended installation, or use vSphere Auto Deploy to provision ESXi as it boots up.
Master It Your manager asks you to provide him with a copy of the unattended installation script that you will be using when you roll out ESXi using vSphere Auto Deploy. Is this something you can give him?
Master It Name two advantages and two disadvantages of using vSphere Auto Deploy to provision ESXi hosts.
Perform postinstallation configuration of ESXi. Following the installation of ESXi, some additional configuration steps may be required. For example, if the wrong NIC is assigned to the management network, the server won’t be accessible across the network. You’ll also need to configure time synchronization.
Master It You’ve installed ESXi on your server, but the welcome web page is inaccessible, and the server doesn’t respond to a ping. What could be the problem?
Install the vSphere Desktop Client. ESXi is managed using the vSphere Desktop Client, an application that provides the functionality to manage the virtualization platform.
Master It List two ways by which you can install the vSphere Desktop Client.
Chapter 3
Installing and Configuring vCenter Server
In the majority of today’s information systems, the client-server architecture is king. This standing is because the client-server architecture can centralize resource management and give end users and client systems simplified access to those resources. Information systems used to exist in a flat, peer-to-peer model, when user accounts were required on every system where resource access was needed and when significant administrative overhead was needed simply to make things work. That’s how managing a large infrastructure with many ESXi hosts feels without vCenter Server. vCenter Server brings the advantages of the client-server architecture to the ESXi host and to VM management.
In this chapter, you will learn to
• Understand the components and role of vCenter Server
• Plan a vCenter Server deployment
• Install and configure a vCenter Server database
• Install and configure the Platform Services Controller
• Install and configure vCenter Server
• Install and configure the Web Client service
• Use vCenter Server’s management features
Introducing vCenter Server
As the size of a virtual infrastructure grows, managing the infrastructure from a central location becomes significantly more important. vCenter Server is an application that serves СКАЧАТЬ