DevOps: What is Kubernetes Pod Scheduling Framework?

1# Scheduler configuration
2apiVersion: kubescheduler.config.k8s.io/v1
3kind: KubeSchedulerConfiguration
4profiles:
5- schedulerName: custom-scheduler
6  plugins:
7    preFilter:
8      enabled:
9      - name: NodeResourcesFit
10    filter:
11      enabled:
12      - name: NodeResourcesFit
13      - name: NodeAffinity
14      - name: NodeUnschedulable
15    postFilter:
16      enabled:
17      - name: NodeResourcesFit
18    preScore:
19      enabled:
20      - name: NodeResourcesFit
21    score:
22      enabled:
23      - name: NodeResourcesFit
24        weight: 1
25      - name: NodeAffinity
26        weight: 2
27    reserve:
28      enabled:
29      - name: NodeResourcesFit
30    permit:
31      enabled:
32      - name: PriorityClass
33    preBind:
34      enabled:
35      - name: NodeResourcesFit
36    bind:
37      enabled:
38      - name: DefaultBinder
39    postBind:
40      enabled:
41      - name: DefaultBinder
42  pluginConfig:
43  - name: NodeResourcesFit
44    args:
45      scoringStrategy:
46        type: MostAllocated
47        resources:
48        - name: cpu
49          weight: 1
50        - name: memory
51          weight: 1

1# Check scheduler configuration
2kubectl get configmap kube-scheduler -n kube-system -o yaml
3
4# Check scheduler logs
5kubectl logs -n kube-system -l component=kube-scheduler
6
7# Check scheduling decisions
8kubectl get events --field-selector reason=Scheduled
9
10# Check failed scheduling
11kubectl get events --field-selector reason=FailedScheduling
12
13# Verify scheduler pods
14kubectl get pods -n kube-system -l component=kube-scheduler