Difference between revisions of "Kubernetes services"
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A Kubernetes [[service]] is an abstraction which defines a logical set of [[Pods]] and a [[policy]] by which to access. When you create a Service, it creates a corresponding [[DNS]] entry. | A Kubernetes [[service]] is an abstraction which defines a logical set of [[Pods]] and a [[policy]] by which to access. When you create a Service, it creates a corresponding [[DNS]] entry. | ||
* https://kubernetes.io/docs/concepts/services-networking/service/ | * https://kubernetes.io/docs/concepts/services-networking/service/ | ||
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| + | == Commands == | ||
| + | * <code>[[kubectl create clusterip]]</code> | ||
| + | * <code>[[kubectl create service loadbalancer]]</code> | ||
| + | * <code>[[kubectl create nodeport]]</code> | ||
| + | * <code>[[kubectl create service externalname]]</code> | ||
Kubernetes sample service: <code>my-service</code> | Kubernetes sample service: <code>my-service</code> | ||
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If <code>targetPort</code> is not specified then same port value is used also as <code>[[targetPort]]</code> | If <code>targetPort</code> is not specified then same port value is used also as <code>[[targetPort]]</code> | ||
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== Changelog == | == Changelog == | ||
Revision as of 15:03, 4 January 2023
A Kubernetes service is an abstraction which defines a logical set of Pods and a policy by which to access. When you create a Service, it creates a corresponding DNS entry.
Commands
kubectl create clusteripkubectl create service loadbalancerkubectl create nodeportkubectl create service externalname
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
Related terms
kubectl get serviceskubectl get svc:CLUSTER-IP EXTERNAL-IPkubectl delete services hello-minikube- Deployments
ConfigMapskubectl port-forward- Kubernetes Endpoints:
kind: Endpoint kind: ReplicaSetkubectl expose- Kubernetes headless service
Activities
- Review CKA 1.23: 20% - Service & Networking
- Review CKA v1.18: Understand Services and other network primitives
- Review CKA v1.15: Understand Services
See also
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