[feature] Example configuration for providing QoS Guaranteed. #391
Description
Is your feature request related to a problem? Please describe.
When Kubernetes creates a Pod it assigns one of these QoS classes to the Pod:
- Guaranteed
- Burstable (deploy using the default sample yaml)
- BestEffort
When Node resources are insufficient, BestEffort POD will be killed first, followed by Burstable, and finally Guaranteed, so, using higher level QoS to be better for databases.
ref: https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/
Describe the solution you'd like
QoS cannot be explicitly configured, it can only match the corresponding QoS rules by configuring resource limits and requests.
For a Pod to be given a QoS class of Guaranteed:
- Every Container in the Pod must have a memory limit and a memory request.
- For every Container in the Pod, the memory limit must equal the memory request.
- Every Container in the Pod must have a CPU limit and a CPU request.
- For every Container in the Pod, the CPU limit must equal the CPU request.
We can provide an example configuration for Guaranteed.
Describe alternatives you've considered
Additional context