I have a Spring Boot microservice (Spring Cloud Gateway) deployed on AWS EKS. It sends metrics to CloudWatch, but I can't figure out how to define an alert on an aggregate metric. This is a sample of the metrics:
I added a custom tag ("instanceId") which provides the instance identifier of the pod:
@Bean
public MeterRegistryCustomizer<CloudWatchMeterRegistry> cloudWatchMetricsCommonTags() {
return (registry) -> registry.config().commonTags("instanceId", EC2MetadataUtils.getInstanceId());
}
This query provides the slowest request:
SELECT MAX("spring.cloud.gateway.requests.max") FROM "tas-gpp-gateway"
But it seems to be impossible define an alert on it. I found this issue, but I can't provide all possible metric dimensions because outcome, httpMethod and instanceId have many different values. In fact, according to the documentation, you should:
- provide a set of metrics
- define a math expression using the metrics
- create an alert based on the math expression
For example:
But this is not an option, because I can't list all the possible dimensions of the metric spring.cloud.gateway.requests.max.
