2.11.3 EADS server status transitions

The following figure shows the EADS server status transitions.

Figure 2‒29: EADS server status transitions (normal start)

Figure 2‒30: EADS server status transitions (restoration processing)

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If restoration processing is successful, the restored EADS server is placed in the same status as that of the other EADS servers that were already running in the cluster when the restoration processing started.

For example, if the status of the other EADS servers that were running when the restoration processing started was running, the restored EADS server is also placed in running status.

Figure 2‒31: EADS server status transitions (scale-out processing (adding EADS servers))

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If EADS server addition processing is successful, the added EADS server is placed in the same status as that of the other EADS servers that were already running in the cluster when the EADS server addition processing started.

For example, if the status of the other EADS servers that were running when the EADS server addition processing started was running, the added EADS server is also placed in running status.

The following table explains each status shown in the figure.

Table 2‒6: EADS server status
EADS server status		Description
Status name	Status displayed by the eztool status command	Description
Initializing	`initializing`	The EADS server is being initialized. This status is also displayed when an EADS server is being restored by using the `ezstart` `-r` command or being added by using the `ezstart` `-ai` command.
Restoring
Adding
Initialized	`initialized`	The EADS server has just been initialized. As with `closed` status, the EADS server cannot accept requests from EADS clients.
Running	`running`	The EADS server can accept requests from EADS clients.
Closing	`closing`	Although the EADS server cannot accept requests from EADS clients, there are threads that are still running.
Closed	`closed`	The EADS server cannot accept requests from EADS clients.
Isolated	`isolated`	As with `closed` status, the EADS server cannot accept requests from EADS clients. An EADS server that has been removed from the cluster for reasons such as a communication error is forcibly placed in `isolated` status. Use the `eztool` `isolate` `--stop` command to individually terminate the EADS servers in `isolated` status.
Stopping	`stopping`	The EADS server is in the process of stopping.
Stopped	`-----------`	The EADS server has stopped.

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