Pod 내에서 메모리 요청 및 제한을 동적으로 검색하려는 애플리케이션에서는 Downward API를 사용해야 합니다. 다음 코드 조각은 이 작업을 수행하는 방법을 보여줍니다.
apiVersion: v1
kind: Pod
metadata:
name: test
spec:
containers:
- name: test
image: fedora:latest
command:
- sleep
- "3600"
env:
- name: MEMORY_REQUEST
valueFrom:
resourceFieldRef:
containerName: test
resource: requests.memory
- name: MEMORY_LIMIT
valueFrom:
resourceFieldRef:
containerName: test
resource: limits.memory
resources:
requests:
memory: 384Mi
limits:
memory: 512Mi
apiVersion: v1
kind: Pod
metadata:
name: test
spec:
containers:
- name: test
image: fedora:latest
command:
- sleep
- "3600"
env:
- name: MEMORY_REQUEST
valueFrom:
resourceFieldRef:
containerName: test
resource: requests.memory
- name: MEMORY_LIMIT
valueFrom:
resourceFieldRef:
containerName: test
resource: limits.memory
resources:
requests:
memory: 384Mi
limits:
memory: 512Mi
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oc rsh test
env | grep MEMORY | sort
# oc rsh test
$ env | grep MEMORY | sort
MEMORY_LIMIT=536870912
MEMORY_REQUEST=402653184
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