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/

/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

Related terms

• PodFitsResources filter
• nodeSelector
• Kind: Pod
• kubectl get pods -o wide
• kubectl logs
• CronJobs
• default-scheduler
• FailedScheduling
• Karpenter

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

• Kubernetes control plane, Kubernetes components, /etc/kubernetes/manifests/
• Kubernetes: distributions, tools, CKA, CKS, Kubernetes interfaces: CSI, CNI, installation, workloads, networking, kubeadm, Kubernetes API, Kubernetes API Server, kubectl, kubeadm, kubelet, kube-proxy, Cloud services: EKS, GKE, TKE, DKS, Helm, Kubernetes RBAC, Kubernetes deployments, Minikube, Rancher, OpenShift, Charmed Kubernetes, Ingress, Kubernetes scheduler, Kubernetes Finalizers, logging, Kubernetes operator, Orka, kind:, Kubernetes namespaces, Kubernetes dashboard, Kubernetes Metrics Server, Field Selectors, CoreDNS, CRI, Kubernetes Topology Manager, Kubernetes governance: (SIG, KEP), Kustomize, controllers, ReadinessProbe, LivenessProbe, KOPS, K9s, Kui, k3s, ImagePullBackOff, PDB, EndPoints, Kots, metadata, Karpenter, Replicated.com, Kubernetes Authenticating, Kubernetes timeline, Changelog/Versions, service accounts, Kubernetes Pod Lifecycle, Kubernetes Conformance Certified, Kubernetes backup, Kubernetes Pod Security Admission, tEKS, Kubernetes events, Kubernetes ports, Kubernetes policies, Connect, addons, DoKC, Kubernetes control plane, Kubernetes Federation, Kubernetes info, Kubetest2, Sidecar (Kubernetes)