How do I enable single-address DR NSP system access?

Purpose

Use this procedure to reduce the number of IP addresses a user requires for access to the NSP clusters in a DR NSP deployment.

The procedure describes implementing a reverse proxy that presents only one IP address for system access. The reverse proxy maps the IP address to the appropriate NSP cluster.

Note: The procedure describes using the mod_proxy Apache HTTP module. Using a different proxy agent or mod_proxy configuration is supported but not described. Also, mod_proxy installation is not described. The reverse proxy must function as an external system; it is not a built-in feature of NSP. Reverse proxy implementation is specific to a network; the network administrator must determine which implementation is best suited to the management network.

Steps
 
1 

Log in as the root user on the station that is to host the reverse proxy.

2 

Open a console window.

3 

Open the httpd.conf file in the mod_proxy installation directory using a plain-text editor such as vi.

4 

Edit the file to include the following:

<VirtualHost *:*>

    <Proxy nspOS://dr>

        BalancerMember http://NSP1

        BalancerMember http://NSP2

    </Proxy>

    ProxyPreserveHost Off

    ProxyPass / nspOS://dr/

    ProxyPassReverse / nspOS://dr/

</VirtualHost>

where

NSP1 and NSP2 are the advertised addresses of the NSP clusters

5 

Close the console window.

End of steps