1. Pod CPU and Memory Consumption
1. Command: kubectl top pod --all-namespaces
   
2. Retrieved Metrics:
   
1. Pod CPU Used(millicores): Current CPU consumption by each pod.
2. Pod Memory Used(MiB): Current memory consumption by each pod.
   
2. Pod Resource Limits and Node Capacity
1. Command: kubectl describe nodes
   
2. Retrieved Metrics:
   
1. Pod CPU Limit(millicores): Maximum CPU each pod can use.
2. Pod Memory Limit(MiB): Maximum memory each pod can use.
3. Pod CPU Request(millicores): Guaranteed CPU allocation for each pod.
4. Pod Memory Request(MiB): Guaranteed memory allocation for each pod.
5. Node's Allocatable CPU(millicores): Available CPU capacity on each node.
6. Node's Allocatable Memory(MiB): Available memory capacity on each node.
   

                                                           

How to configure the calculation method?

1. Global Config Key: am.cloud.azure.aks.pod.usage.calculation
   
2. Possible Values:
   
1. podlimits – Pod limit based calculation
   
2. podrequests – Pod request based calculation
3. nodeallocatable – Node allocatable based calculation
3. Default Behavior: By default, the global config key does not exist. In this case, the Pod CPU and Memory Usage (%) calculation is based on Pod Limits.
4. Steps to configure: Open the query tool and perform the below steps.
   
1. Verify Key Existence: Check whether the key 'am.cloud.azure.aks.pod.usage.calculation' exists in the AM_GLOBALCONFIG table.
   
1. SELECT * FROM AM_GLOBALCONFIG WHERE NAME = 'am.cloud.azure.aks.pod.usage.calculation';
2. If the key does not exist, to switch the calculation method perform an INSERT operation.
   
1. INSERT INTO AM_GLOBALCONFIG (NAME, VALUE) VALUES ('am.cloud.azure.aks.pod.usage.calculation', 'podrequests');
3. If the key exists, perform an UPDATE operation to switch the calculation method.
   
1. UPDATE AM_GLOBALCONFIG  SET VALUE = 'nodeallocatable' WHERE NAME = 'am.cloud.azure.aks.pod.usage.calculation';