Kubernetes scheduler

kube-scheduler is the default scheduler for Kubernetes and runs as part of the control plane.

• https://kubernetes.io/docs/concepts/scheduling-eviction/kube-scheduler/

• Logs: /var/log/kube-scheduler.log - Scheduler (kube-scheduler), responsible for making scheduling decisions

• Installation: snap install kube-scheduler

Activities

• CKA v1.18: Know how to configure the Kubernetes scheduler
• CKA v1.18: Use label selectors to schedule Pods: kubectl label nodes and nodeSelector
• Read about Kubernetes scheduler and Karpenter https://github.com/aws/karpenter/issues/1528
• Read about Resource Management for Pods and Containers

Related terms

• PodFitsResources filter
• nodeSelector
• Kind: Pod
• kubectl get pods -o wide
• kubectl logs
• CronJobs
• default-scheduler
• FailedScheduling
• Karpenter
• Kubernetes pod affinity and anti affinity

0/11 nodes are available: 1 Insufficient cpu, 1 Too many pods, 10 nodes(s) didn't match Pod's node affinity/selector
0/2 nodes are available: 1 Too many pods, 1 nodes(s) didn't match Pod's node affinity/selector

See also

• kube-scheduler, /var/log/kube-scheduler.log
• FailedScheduling: Insufficient cpu, Insufficient memory, timed out waiting for the condition, unbound immediate PersistentVolumeClaims
• Kubernetes control plane, Kubernetes components, /etc/kubernetes/manifests/
• Kubernetes scheduler, default-scheduler, FailedScheduling, kube-scheduler, /var/log/kube-scheduler.log
• Kubernetes pod affinity and anti affinity, default-scheduler, affinity:, NodeAffinity