Additional Health Check Properties for Healthy Instances
The health checker created by create-http-health-checker only checks unhealthy instances. To periodically check healthy instances set some additional properties in your exported loadbalancer.xml file.
Note –
These properties can only be set by manually editing loadbalancer.xml after you’ve exported it. There is no equivalent asadmin command to use.
To check healthy instances, set the following properties:
Table 4–3 Health-checker Manual Properties|
Property |
Definition |
|---|---|
|
True/false flag indicating whether to ping healthy server instances to determine whether they are healthy. To ping server instances, set the flag to true. |
|
|
Specifies how many times the load balancer’s health checker pings an unresponsive server instance before marking it unhealthy. Valid range is between 1 and 1000. A default value to set is 3. |
Set the properties by editing the loadbalancer.xml file. For example:
<property name="active-healthcheck-enabled" value="true"/> <property name="number-healthcheck-retries" value="3"/>
If you add these properties, then subsequently edit and export the loadbalancer.xml file again, you must add these properties to the file again, since the newly exported configuration won’t contain them.
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