I'm a developer, not an IT person, so apologies if my terminology is wrong or inexact. Improve this question. Community Bot 1. What happens if you shut down host 2 instead of host 1? Hyppy If I shut-down Host 2 then pings and http requests to the cluster address continue to work. Do you mean Host 2? What are your port rules for the cluster? Hyppy Yes, sorry, I meant host 2. I have edited my comment. Show 3 more comments. Active Oldest Votes.
Useful links: Microsoft NLB not working properly in Unicast Mode - describes why unicast doesn't easily work under VMware, and what to do if you really want to use it anyway. Improve this answer. Good find Andy, and thanks for the links. Add a comment. I suspect if the failover is not working then you may have an issue with the clustering traffic.
I don't see any traffic on host 2. You also need the account you were asked to make on the domain controller, which will be used as the Cluster Service Account. This wizard helps you create a new server cluster. Using this wizard, you specify the computer that will be the first node in the cluster. After you finish the wizard, you can add additional nodes by using Cluster Administrator.
You can make this anything you want, but make sure it's 15 characters or less NetBIOS restriction and, if you can, stick with what I provided because I change the name later to force errors on the cluster, as shown in the next illustration. Once you click the next button, you begin the domain confirmation search seen in the following illustration.
If you don't have the proper credentials and prior configurations set up correctly, your Cluster Service configuration will fail every time. Misconfiguration is the number one reason cluster server solutions don't work, can't be installed, or break down. After domain access is confirmed, you can add the first node to the cluster.
You must have your nodes joined to the domain and you might need to verify on the domain controller that your nodes have computer accounts on them. At times, this isn't added automatically and you have to add them manually.
To add a machine account manually to a domain controller, you need to log in to the domain controller and open the Active Directory Users and Computers MMC.
Once opened, open the Computers folder located in the left-hand navigation pane of the MMC and in the right-hand contents pane, you should find your nodes as computer accounts on the domain controller. If you don't find them, right-click the Computers folder and add them. If you had trouble adding the node to the domain, this will solve your problems. Click Next to continue. Once you select your node, you can click Next to continue. The following screen is a tremendous help to any administrator trying to determine what's wrong with a service configuration.
It gives you a nice way to view the errors, have a log you can save to your desktop to analyze, and a Details tab to troubleshoot problems immediately without having to open any other consoles to view the Event Viewer or any other logs. If the screen in the following illustration is successful, you can continue with your cluster configuration.
If not, you have many ways available to you to troubleshoot why it didn't work. You look at the log when the installation is completed but, for now, click the Details button. This produces the dialog box. This is a new add-on for Server and it's extremely handy.
If you look at the previous illustration, you can see check marks next to plus signs. None You want to ensure even load balancing among cluster hosts Client traffic is stateless for example, HTTP traffic.
Single You want to ensure that requests from a specific client IP address are sent to the same cluster host. Clients use multiple proxy servers to access the cluster, and they appear to have multiple IP addresses within the same Class C IP address range. All Rights Reserved. Mar Server 1. Server 2. The cluster adapters for all cluster hosts are assigned a multicast MAC address.
Communication between cluster hosts is not affected, because each cluster host retains a unique MAC address. Again, with the relatively low prices of computer hardware, you'd be wise to max out your NLB servers with as much RAM and hard drive capacity as they can handle. Chapter 1 discussed RAID in some detail if you need to review it. IIS uses a lot of memory because it stays memory-resident to increase speed for web site requests. Look at Chapter 2 to learn how to use system monitor and baseline a test system to get accurate numbers on how much RAM you need.
Chapter 2 also tells you how to use stress test tools in a lab environment to simulate load on your NLB cluster. Other requirements are focused on the network hardware with which you're implementing the NLB cluster.
0コメント