Kubernetes Nodes

Kubernetes Nodes or working nodes run K8s workloads. Node architecture includes:

• kubelet
• A container runtime
• kube-proxy

https://kubernetes.io/docs/concepts/architecture/nodes/

• GKE Node Pool
• Amazon EKS Nodegroup

Commands

• kubectl get nodes
• kubectl describe nodes
• kubectl label nodes
• kubectl uncordon
• kubectl cordon
• kubectl taint nodes
• kubectl drain
• kubectl delete node

Node conditions

• Ready
• DiskPressure
• MemoryPressure
• PIDPressure
• NetworkUnavailable

Related: SchedulingDisabled

• FreeDiskSpaceFailed

Errors

• Pod The node had condition:
• Container: is approaching memory limit

Related

• CKA v1.23: Understand host networking configuration on the cluster nodes
• cordoned Node
• NodeNotSchedulable, RemovingNode, node/
• topologySpreadConstraints
• Kubernetes DaemonSets
• node.k8s.io
• Linux node swap support

See also

• K8s nodes: get | uncordon | cordon | drain | taint | describe | patch ] nodes
• Kubernetes nodes, node.kubernetes.io K8s Node controller (node-controller), MemoryPressure, DiskPressure, NodeHasDiskPressure, events, NodeNotReady, Node-pressure Eviction, RemovingNode, ProviderID, kubectl node-shell, kubectl describe nodes, K8s Linux node swap support

https://kubernetes.io/docs/concepts/architecture/nodes/#condition