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Rolling Upgrade and RIS

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When performing the install stage of a rolling upgrade, you can load the base operating system subsets from a CD-ROM or from a Remote Installation Services (RIS) server.

Note:

You can use RIS only to load the base operating system subsets.

To use RIS, you must register both the lead member and the default cluster alias with the RIS server. When registering for operating system software, you must provide a hardware address for each host name. Therefore, you must create a hardware address for the default cluster alias in order to register the alias with the RIS server. (RIS will reject an address that is already in either of the RIS server's /etc/bootptab or /var/adm/ris/clients/risdb files.)

If your cluster uses the cluster alias virtual MAC (vMAC) feature, register that virtual hardware address with the RIS server as the default cluster alias's hardware address. If your cluster does not use the vMAC feature, you can still use the algorithm that is described in the vMAC section of the Cluster Installation manual to manually create a hardware address for the default cluster alias.

A vMAC address consists of a prefix (the default is AA:01) followed by the IP address of the alias in hexadecimal format. For example, the default vMAC address for the default cluster alias deli whose IP address is 16.140.112.209 is AA:01:10:8C:70:D1. The address is derived in the following manner:

        Default vMAC prefix:       AA:01
        Cluster Alias IP Address:  16.140.112.209
        IP address in hex. format: 10.8C.70.D1
        vMAC for this alias:       AA:01:10:8C:70:D1

Another method for creating a hardware address is to append an arbitrary string of eight hexadecimal numbers to the default vMAC prefix, AA:01. For example, AA:01:00:00:00:00. Make sure that the address is unique within the area served by the RIS server. If you have more than one cluster, remember to increment the arbitrary hexadecimal string when adding the next alias. (The vMAC algorithm is useful because it creates an address that has a high probability of being unique within your network.)

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