Adjusting Resources Based on Actual Usage
In this lesson, we will find out the actual resource usage of running containers and adjust the allocation according to that.
Getting the Actual Resource Usage
We saw some of the effects that can be caused by a discrepancy between resource usage and resource specification. It’s only natural that we should adjust our specification to reflect the actual memory and CPU usage better.
The DB Container
Let’s start with the database.
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DB_POD_NAME=$(kubectl get pods \-l service=go-demo-2 \-l type=db \-o jsonpath="{.items[0].metadata.name}")curl "$BASE_URL/$DB_POD_NAME/containers/db/metrics/memory/usage"curl "$BASE_URL/$DB_POD_NAME/containers/db/metrics/cpu/usage_rate"
We retrieved the name of the database Pod and used it to obtain memory and CPU usage of the db container. As a result, we now know that memory usage is somewhere between 30Mi and 40Mi. Similarly, we know that the CPU consumption is somewhere around 5m
The API Container
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