Memory requests not defined This product is not supported for your selected
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Id: kubernetes-memory-requests-not-defined
Platform: Kubernetes
Severity: Medium
Category: Resource Management
Learn More Description Memory requests should be defined for each container so the scheduler and kubelet can account for and reserve the requested memory and help prevent over-provisioning on nodes. Without a defined memory request, the scheduler may overcommit node memory, increasing the risk of resource contention and out-of-memory (OOM) terminations.
Compliant Code Examples apiVersion : v1
kind : Pod
metadata :
name : memory-demo
namespace : mem-example
spec :
containers :
- name : memory-demo-ctr
image : polinux/stress
resources :
limits :
memory : "200Mi"
requests :
memory : "100Mi"
command : [ "stress" ]
args : [ "--vm" , "1" , "--vm-bytes" , "150M" , "--vm-hang" , "1" ]
apiVersion : apps/v1
kind : Deployment
metadata :
name : test-deployment-ctr-neg
labels :
app : test-neg
spec :
replicas : 3
selector :
matchLabels :
app : test-ctr-neg
template :
metadata :
labels :
app : test-ctr-neg
spec :
containers :
- name : pause
image : k8s.gcr.io/pause
resources :
limits :
cpu : 0.5
memory : 512Mi
requests :
cpu : 0.5
memory : 512Mi
Non-Compliant Code Examples apiVersion : v1
kind : Pod
metadata :
name : memory-demo
namespace : mem-example
spec :
containers :
- name : memory-demo-ctr-1
image : polinux/stress
resources :
limits :
memory : "200Mi"
requests :
cpu : "0.5"
command : [ "stress" ]
args : [ "--vm" , "1" , "--vm-bytes" , "150M" , "--vm-hang" , "1" ]
---
apiVersion : v1
kind : Pod
metadata :
name : memory-demo-1
namespace : mem-example
spec :
containers :
- name : memory-demo-ctr-2
image : polinux/stress
resources :
limits :
memory : "200Mi"
command : [ "stress" ]
args : [ "--vm" , "1" , "--vm-bytes" , "150M" , "--vm-hang" , "1" ]
---
apiVersion : v1
kind : Pod
metadata :
name : memory-demo-2
namespace : mem-example
spec :
containers :
- name : memory-demo-ctr-3
image : polinux/stress
command : [ "stress" ]
args : [ "--vm" , "1" , "--vm-bytes" , "150M" , "--vm-hang" , "1" ]
---
apiVersion : v1
kind : Pod
metadata :
name : memory-demo-3
namespace : mem-example
spec :
securityContext :
runAsUser : 1000
runAsGroup : 3000
fsGroup : 2000
volumes :
- name : sec-ctx-vol
emptyDir : { }
containers :
- name : memory-demo-ctr-4
image : polinux/stress
command : [ "stress" ]
apiVersion : apps/v1
kind : Deployment
metadata :
name : test-deployment2
labels :
app : test2
spec :
replicas : 3
selector :
matchLabels :
app : test2
template :
metadata :
labels :
app : test2
spec :
containers :
- name : pause
image : k8s.gcr.io/pause
resources :
limits :
cpu : 0.5
memory : 512Mi
