Creating an asymmetric companion configuration  Administering Sybase Failover

Chapter 11: Active-Active Configuration for Sun Cluster 2.2

Setting up a symmetric configuration

After you configure the companions for asymmetric fail over, you can set them up for symmetric configuration. In a symmetric configuration, both servers act as primary and secondary companions. See Figure 3-2 for a description of symmetric configuration.

Issue sp_companion from the primary companion to configure it for symmetric configuration. Use syntax similar to the one for asymmetric configuration, but replace with_proxydb by NULL. See “Creating an asymmetric companion configuration”.”

In the following example, PERSONNEL1 is the secondary server of MONEY1. This is an asymmetric configuration, and will be changed to a symmetric one:

sp_companion 'MONEY1', configure, NULL, sa, Think2Odd
Server 'MONEY1' is alive and cluster configured.
Step: Access verified from Server:'MONEY1' to Server:'PERSONNEL1'
Server 'PERSONNEL1' is alive and cluster configured.
Step: Access verified from Server:'PERSONNEL1' to Server:'MONEY1'
(1 row affected)
(1 row affected)
(1 row affected)
(1 row affected)
(1 row affected)
(1 row affected)
.....
Step: Companion servers configuration check succeeded
Step: Server handshake succeeded
Step: Master device accessible from companion
Step: Added the servers 'MONEY1' and 'PERSONNEL1' for cluster config
Step: Server configuration initialization succeeded
Step: Synchronizing server logins from companion server
Step: Synchronizing remoteserver from companion server
Step: Synchronizing roles from companion server
Step: Synchronizing server-wide privs from companion server
Step: User information syncup succeeded
Step: Server configured in normal companion mode




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