7.7.3 Automating an operation after hot standby processing
- Organization of this subsection
(1) Automating an operation after hot standby processing in the event of a server failure
For servers in the server mode, you can automate the performance of an operation after hot standby processing by using functions provided by the program. For details, see the program documentation.
For servers in the monitor mode, performance of an operation after hot standby processing cannot be automated.
(2) Automating an operation after hot standby processing in the event of a host failure
When hot standby processing occurs due to a host failure, the operator must manually start the host and the servers on the host where the host failure occurred. The method for automating this processing depends on whether the servers are running in the server mode or the monitor mode.
For servers in the server mode, you can automate this processing by using functions provided by the program. For details, see the program documentation.
For servers in the monitor mode, you can automate this processing by using functions provided by HA Monitor. To start servers automatically when the servers are to be restarted on a host on which a host failure occurred, specify the monbegin_restart operand in the HA Monitor environment settings. By default, such server startup processing is set to be performed automatically.
In the event of a host failure that disables monitoring paths, the standby server might be placed in the hot-standby wait state on the target host, regardless of whether the server is in the server mode or the monitor mode. Handling of a server in the hot-standby wait state cannot be automated. For details about the handling, see 7.4.1 Starting a server in the wait state and then restarting jobs.