| Table of Contents |
|---|
Sample configuration
| Code Block |
|---|
<configuration>
<autoscaler>
<rulesEvaluator>
<schedule>
<initialDelay>30</initialDelay>
<period>15</period>
</schedule>
</rulesEvaluator>
<cloudController>
<hostname>CC_HOSTNAME</hostname>
<port>CC_LISTEN_PORT</port>
<clientTimeout>300000</clientTimeout>
</cloudController>
<stratosManager>
<hostname>SM_HOSTNAME</hostname>
<port>SM_LISTEN_PORT</port>
<clientTimeout>300000</clientTimeout>
</stratosManager>
<member>
<expiryTimeout>900000</expiryTimeout>
</member>
</autoscaler>
</configuration> |
Element definitions
The following are the configurations in the autoscaler.xml file:
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Rules evaluator
The scheduler that runs within the Rules Evaluator will evaluate the Autoscaling rules periodically. The Scheduler needs to be configured with the initialDelay and period.
| XML Element | Description | Default Value | Mandatory/ Optional |
|---|---|---|---|
<initialDelay> | The Scheduler will always start after the Auto-scaler starts and after the time period defined in this element. This element needs to be specified in seconds. | 30 | Mandatory |
<period> | The Scheduler will evaluate the rules based on the time period specified in this element. This element needs to be specified in seconds. | 15 | Mandatory |
Cloud Controller client
There is a Cloud Controller client located within the Autoscaler, which calls the Cloud Controller API. The Cloud Controller client connection details need to be configured in the Autoscaler configuration.
| XML Element | Description | Default Value | Mandatory/ Optional |
|---|---|---|---|
<hostname> | Cloud Controller hostname | N/A | Mandatory |
<port> | Cloud Controller port | N/A | Mandatory |
<clientTimeout> | This element defines the service timeout period that will be applicable in the event there is no response from the Cloud Controller API. | 300000 | Mandatory |
Stratos Manager client
There is a Stratos Manager client located within the Autoscaler, which calls the Stratos Manager API. The Stratos Manager client connection details need to be configured in the Autoscaler configuration.
| XML Element | Description | Default Value | Mandatory/ Optional |
|---|---|---|---|
<hostname> | Stratos Manager hostname | N/A | Mandatory |
<port> | Stratos Manager port | N/A | Mandatory |
<clientTimeout> | This element defines the service timeout period that will be applicable in the event there is no response from the Stratos Manager API. | 300000 | Mandatory |
Member timeout
When a new instance is started, it will be marked as a pending member. If the instance does not get activated within a specific time period, the Auto-scaler will terminate the instance. The expiryTimeout needs to be specified to define the termination time period.
| XML Element | Description | Default Value | Mandatory/ Optional |
|---|---|---|---|
<expiryTimeout> | This element defines the member timeout period. The | 900000 | Mandatory |