uCosminexus Application Server, Operation, Monitoring, and Linkage Guide
18.7.3 Starting and stopping a system for planned node switching in the mutual node switching system
(1) Planned node switching for virtual host 1
To switch the nodes for the virtual host 1 in a planned manner:
- Run the monswap command in Application Server 1 to switch the nodes.
As a result, as shown in the figure, the executing node 1 (virtual host 1) of Application Server 1 switches to the virtual host of the standby node and the standby node 1 (virtual host 1) of Application Server 2 switches to the virtual host of the executing node.
- To return to the normal executing node and standby node operations, run the monswap command in Application Server 2 and switch the nodes.
As a result, as shown in the figure, the executing node 1 (virtual host 1) of Application Server 2 switches to the virtual host of the standby node and the standby node 1 (virtual host 1) of Application Server 1 switches to the virtual host of the executing node. Thus, the executing node and standby node operations return to normal.
(2) Planned node switching for virtual host 2
Procedures to switch the nodes for the virtual host 2 in a planned manner:
- Run the monswap command in Application Server 2 to switch the nodes.
As a result, as shown in the figure, the executing node 2 (virtual host 2) of Application Server 2 switches to the virtual host of the standby node and the standby node 2 (virtual host 2) of Application Server 1 switches to the virtual host of the executing node.
- To return to the normal executing node and standby node operations, run the monswap command in Application Server 1 and switch the nodes.
As a result, as shown in the figure, the executing node 2 (virtual host 2) of Application Server 1 switches to the virtual host of the standby node and the standby node 2 (virtual host 2) of Application Server 2 switches to the virtual host of the executing node. Therefore, the executing node and standby node operations return to normal.
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