Server 2012 leverages NLB to enable high availability of Web sites

Windows Server 2012 leverages NLB to enable high availability of Web sites

NLB Introduction:

NLB Network Load Balancing, his role is that when a host in the cluster suddenly fails or work offline, there will be another specific host to share his work, to ensure the normal operation of the service. When the traffic load is too heavy, the network traffic will be shared, so that the load of the network can be reached in a balanced state.

Below we will use NLB Network Load Balancing to achieve high availability of Web sites in a Windows server2012 environment.

For the approximate topological diagram of the experiment, we prepared the network settings in advance, such as:

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Below we will first add roles and features to the SERVER02 machine, such as:

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After checking the IP address, click Next to proceed with the Installation Wizard:

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Next, tick "Network Load Balancing" and click Next to install, such as:

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Install complete Click "Close",

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Below we do the same installation on the SERVER03, confirm the IP address, click Next,

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Tick "Network Load Balancing" and click "Next", such as:

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Install complete, click "Close",

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We came to the Server02 machine to configure NLB, click on the tool--Network Load Balancing Manager,

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Click Network Load Balancing cluster--right--Create a new cluster, such as:

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We will point the host of the new cluster to the IP of this machine, the interface chooses the excuse of physical network card, for example:

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By default, click "Next",

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The following will add a VIP virtual IP address for the new cluster, which I set to 192.168.1.104,

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After confirming the newly added IP, click Next:

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Cluster operation mode:

Unicast: The MAC address of all nodes is replaced with a unified cluster MAC address

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Continue Setup below, click Finish,

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After the new cluster is created, we can see that the host state of the SERVER02 is already aggregated,

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Next we will add the SERVER03 host to the cluster in the cluster, click the cluster name-right--add the host to the cluster, such as:

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As before, the host is SERVER03 IP, the NIC interface is also the physical NIC interface,

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Continue by default, click "Next",

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Next, click "Finish".

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We can see that the two hosts in the cluster are all in the aggregated state, which means that the NLB we've built has been basically successful. The next test is:

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We will server01 as the client, the persistent ping VIP virtual IP address, 192.168.1.104. such as:

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Below we successively disconnects two nodes, we first disable SERVER03 's network card, check the network condition,

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We will then disable the Server02 NIC to check the network status,

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The above tests will find that our network connectivity is not affected. Proving that the NLB experiment was a success.

We will implement the high availability of the Web site on the basis of NLB.

First, we create a Web shared folder on Server01 to enable synchronization of data updates, such as:

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We server02 server03 above the new WEB01, WEB02 site,

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The physical path of the site points to the location of the shared Ask folder of the Server01 and points the IP address to the VIP virtual IP address.

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Below we are again in succession to disconnect two nodes, to view the file access, such as:

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The above experiments have realized how to build Network Load balancing and how to use Network Load Balancing to realize the high availability of web sites. The above experimental steps are more detailed, and thank you for watching,, what is the DA ~ ~ ~

Server 2012 leverages NLB to enable high availability of Web sites