Classic Load Balancer Health Check Interval Configuration
Question
Which one of the following settings on the Classic load balancer helps define the amount of time between health checks of an individual backend instance.
Answers
Explanations
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A. B. C. D.Answer - A.
The HealthCheck Interval is the amount of time between health checks of an individual instance.
For more information on health checks, please refer to the below URL:
http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-healthchecks.htmlThe correct answer to the question is "HealthCheck Interval."
The Classic Load Balancer (CLB) is a type of Elastic Load Balancer (ELB) service provided by Amazon Web Services (AWS). It is designed to distribute incoming traffic to multiple Amazon EC2 instances to improve application availability and scalability.
One of the primary functions of the CLB is to perform health checks on the backend instances to ensure they are operating correctly and are available to receive traffic. These health checks are conducted periodically, and the time interval between each check is called the "HealthCheck Interval."
The HealthCheck Interval setting can be configured by the user and is expressed in seconds. The default value is 30 seconds. The shorter the interval, the more frequently the CLB checks the backend instances' health.
If an instance fails a health check, the CLB marks it as "unhealthy." The number of consecutive health check failures required to consider an instance as unhealthy is defined by the "Unhealthy Threshold" setting. The default value is two consecutive failures.
Conversely, if an instance passes a health check, the CLB marks it as "healthy." The number of consecutive health check successes required to consider an instance as healthy is defined by the "Healthy Threshold" setting. The default value is two consecutive successes.
Finally, the "Response Timeout" setting defines the maximum time that the CLB waits for a response from the backend instance before considering the health check as a failure. The default value is 5 seconds.
In summary, the HealthCheck Interval setting on the Classic Load Balancer helps define the amount of time between health checks of an individual backend instance. It is one of the key parameters that AWS users can adjust to optimize the performance and availability of their applications.
