Kubernetes services

A Kubernetes service is an abstraction which defines a logical set of Pods and a policy by which to access.

Kubernetes sample service: my-service

apiVersion: v1
kind: Service
metadata:
  name: my-service
spec:
  selector:
    app: MyAppLabel
  ports:
    - protocol: TCP
      port: 80
      targetPort: 9376

If targetPort is not specified then same port value is used also as targetPort

Changelog

• v1.18 (March 2020) AppProtocol is a new optional field on ports in Endpoints and Services

Related terms

• kubectl get services
• CKA v1.15: Understand Services
• CKA v1.18: Understand Services and other network primitives

See also

• CKA: v1.28: API, Namespace, Pods, secrets, Services, deployments, nodes, Volumes, Ingress, CKS
• 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)

https://kubernetes.io/docs/concepts/services-networking/service/