MACROMEDIA COLDFUSION MX-CLUSTERCATS Manual de usuario descargar pdf (Pagina 142)

132 Chapter 7 Optimizing ClusterCATS

ClusterCATS dynamic IP addressing (Windows only)

This section describes how to enable ClusterCATS dynamic IP addressing on your site.

You do not have to configure your system on UNIX for dynamic IP addressing, because

it is set up by default.

If your site is already configured so the IP address for the computer name is different

from the IP address(es) for the websites configured on this server, you can skip “Setting

up maintenance IP addresses” on page 133 and continue with “Enabling ClusterCATS

dynamic IP addressing” on page 135.

Understanding static and dynamic IP address configurations

Each server that you add to a cluster must have an IP address defined for it. Because the

Internet operates on a TCP/IP network protocol for sending and receiving packets of

data to and from networked computers, you must correctly define your servers’ IP

addresses so they can send and receive network data as intended.

The static address must be assigned to the server itself — the physical box. You do so by

making an entry in the server’s IP stack. On Windows servers, you add the IP address

using the Network icon in the Control Panel. The Network icon is also commonly

referred to as your network interface card (NIC).

You must also ensure that the websites’ static IP addresses that reside on the web server on

this computer are removed from the IP stack (also with the Network icon in the Control

Panel). Typically, someone added the website IP addresses to the server’s IP stack before

installing ClusterCATS and creating clusters. You must manually remove those IP

addresses so ClusterCATS can dynamically create them in the IP stack according to server

load and availability in the cluster.

There are generally two ways to move from static to dynamic addressing:

• Change the IP address and FQHN of the website

• Change the address and FQHN of the web server’s computer

Because most webmasters cannot change the website address, the instructions in this

section explain how to change the computer or machine name.

Note: Computer names associated with the ClusterCATS dynamic IP addresses must have

fully qualified host names (FQHNs) in DNS and DNS forward and reverse entries.

The procedure for configuring ClusterCATS with dynamic IP addressing is as follows:

1 Set up your servers with maintenance addresses. See “Setting up maintenance IP

addresses” on page 133.

2 Install ClusterCATS. See “Installing ClusterCATS on Windows” on page 41.

3 Enable ClusterCATS dynamic IP addressing. See “Enabling ClusterCATS dynamic

IP addressing” on page 135.

4 Create your clusters. See “Creating clusters in Windows” on page 54.

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MACROMEDIA COLDFUSION MX-CLUSTERCATS Manual de usuario Pagina 142