Chapter 14 Performing Administrative Tasks for the Proxy Cache Service and Array

• "Modifying Your Configuration"

• "Backing Up Your Configuration"

• "Restoring Your Configuration"

• "Adding and Removing Hosts"

• "Moving an Array"

This chapter describes additional configuration procedures not described in the Netra Proxy Cache Array Configuration Guide or the Netra Proxy Cache Server Configuration Guide.

The starting point for most performing most proxy cache- and array-related tasks is the Proxy Cache Administration page. See Chapter 3, Loading the Proxy Cache Administration Page," for instructions on bringing up this page.

Modifying Your Configuration

Use of the "basic" links in the Proxy Cache Administration page to modify your Netra Proxy Cache Server or Array configuration is the same as it is for first-time configuration, and is described in the Netra Proxy Cache Array Configuration Guide and the Netra Proxy Cache Server Configuration Guide.

Advanced configuration is described in Chapter 4, Advanced Proxy Cache Configuration for the proxy cache service and Chapter 5, Advanced Array Configuration for array properties.

When making changes to proxy cache service or array properties, the significant points to keep in mind are:

• For a server, if you make any changes to the proxy cache service properties, you must install those changes before they take effect.

• For an array, if you make any changes to the proxy cache service or array properties, you must install those changes on all hosts in the array (including the administrative host).

• If you make any changes to an array member configuration, you must install the changes on the modified host.

You install changes using the Install Configuration link in the Proxy Cache Administration page.

Backing Up Your Configuration

You can backup your server or array configuration by using the Save/Restore link in the Netra Main Administration page. See Chapter 3 of the Netra Proxy Cache Array Configuration Guide or Netra Proxy Cache Server Configuration Guide for a detailed procedure.

Restoring Your Configuration

Assuming you have backed up your configuration to diskette (see preceding section), you can restore that configuration, to an individual server or to all of the hosts in your array. Use the Save/Restore link in the Netra Main Administration page.

If you suffer a complete failure, such as the loss of the hard disk from which you boot, follow the procedure in Appendix A, System Recovery."

To Restore a Proxy Cache Configuration

1. Insert your backup diskette in the diskette drive of the host being restored.

2. In the Netra Main Administration page, click Save/Restore.

3. In the Save/Restore page, click Restore configuration from diskette.

Adding and Removing Hosts

To add or remove a Netra Proxy Cache Server to or from your Netra Proxy Cache Array, use the following procedures.

To Add a Host

1. Connect the new host to the service and control networks.

2. Perform initial host configuration on the new host.

   See Netra Proxy Cache Array Configuration Guide for detailed instructions.

3. Connect to the administrative host and perform basic array member configuration for the new host.

   Use the addresses chosen in Step 1.

4. Use the Install Configuration link to copy your array configuration to new the host.

To Remove a Host

1. Using the Advanced array member configuration link in the Proxy Cache Administration page, remove the host from the array.

   See Chapter 6, Advanced Array Member Configuration," for detailed instructions on removing an array member.

1. In the Proxy Cache Administration page on the host to be removed, click Unconfigure proxy cache service.

You can perform the preceding steps in either order.

1. After performing the preceding steps, disconnect the machine from the service and control networks.

Note that the service address originally associated with the removed host will remain available to existing clients for the duration specified in the service timeout property. See "Proxy Cache" for a description of this property.

Moving an Array

You can move an array from one subnet to another. This means that all host addresses, proxy cache service addresses, and the DNS service address change. You can continue to use the same control addresses, both subnet and host. You can use any machine as your administrative host.

To Move an Array

1. If you use a name service, register the new host addresses in the name service.

2. In the Proxy Cache Administration page on each host in the array, click Unconfigure Proxy Cache.

3. In the Netra Main Administration page on each host in the array, click on Restart and Shutdown, then click on Shutdown in the Restart and Shutdown Administration page.

4. Disconnect the array hosts from the service and control networks.

5. Connect the array hosts to the new subnet and reconnect the hosts to the control network.

6. Perform the TTY method for network interface configuration, as described in Section 2.3.1 of the Netra Proxy Cache Array Configuration Guide, on each host in the array.

7. Using a browser to connect to your administrative host, in the Netra Main Administration, change your host name (if the name is changing) and make any other required changes, such as name service configuration or time zone selection.

   If any changes require a reboot, the Netra Main Administration page reminds you of this requirement. Use the Restart and Shutdown link to reboot your server.

8. In the Proxy Cache Administration page, complete proxy cache service and array configuration, as described in Chapter 3 of the aforementioned Configuration Guide.