Difference between revisions of "Kubectl apply"

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{{lowercase}}
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<code>[[kubectl]] apply</code> apply a configuration to a [[resource]] by filename or <code>[[stdin]]</code> <ref>https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#apply</ref>
  
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<code>[[kubectl apply --help]]</code>
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[[--recursive]]
  
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* <code>[[kubectl apply]] -f https://k8s.io/examples/pods/storage/redis.yaml</code>
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* <code>[[kubectl apply -f]] https://k8s.io/examples/pods/storage/redis.yaml</code>
  
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* <code>[[kubectl apply -f myredis.yaml]]</code>
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* <code>[[kubectl apply -f ./secret.yaml]]</code>
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* <code>[[kubectl apply -f]] your.yaml [[-n]] your-[[Kubernetes namespaces|namespace]]</code>
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* <code>[[kubectl apply -k]]</code>
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* <code> kubectl apply --dry-run=server</code>
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* <code>[[kubectl apply --server-side]]</code>
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* [[Dashboard]]: <code>kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.4.0/aio/deploy/recommended.yaml</code>
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* [[Istio install]]: <code>[[kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml]]</code>
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kubectl apply -f https://k8s.io/examples/application/mysql/mysql-pv.yaml
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persistentvolume/mysql-pv-volume created
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persistentvolumeclaim/mysql-pv-claim created
  
 
== Activities ==
 
== Activities ==
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* [[CKAD]]: [[Create and configure a basic Pod]] (<code>[[kubectl apply]]</code>)
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* [[CKA v1.15]], [[CKA v1.21]]: [[Create and configure a basic Pod]] (<code>[[kubectl apply]]</code>)
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== Errors ==
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* <code>[[Cannot unmarshal XXXXX into Go struct field]]</code>
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* <code>[[Operation cannot be fulfilled on]] ...</code>
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* <code>[[the object has been modified; please apply your changes to the latest version and try again]]</code>
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kubectl apply -f ./file.yaml
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Error from server (InternalError): error when creating "./file.yaml": [[Internal error occurred: failed calling webhook]] "virtualmachines- mutator.[[kubevirt.io]]": Post https://virt-api.kubevirt.svc:443/virtualmachines-mutate?timeout=30s: [[service]] "[[virt-api]]" not found
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{{is missing}}
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[[error: error parsing yourfile: error converting YAML to JSON]]: yaml: line 11:
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[[mapping values are not allowed in this context]]
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error: error validating "yourfile": error validating data:
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[ValidationError(PersistentVolumeClaim.metadata.finalizers): invalid type for
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[[io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta.finalizers]]: got "string", expected "array",
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ValidationError([[PersistentVolumeClaim]]): unknown field "name" in
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[[io.k8s.api.core.v1.PersistentVolumeClaim]] ]; if you choose to ignore these errors, turn
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validation off with [[--validate=false]]
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== Warning ==
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Warning: resource endpoints/your-endpoint is missing the [[kubectl.kubernetes.io/last-applied-configuration]] [[annotation]] which is required by kubectl apply. kubectl apply should only be used on resources created declaratively by either [[kubectl create --save-config]] or [[kubectl apply]]. The missing annotation will be patched automatically.
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endpoints/your-endpoint configured
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== Related ==
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* <code>[[kubectl create]]</code>
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* <code>[[kubectl edit]]</code>
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* <code>[[kubectl run]]</code>
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* <code>[[kubectl get]]</code>
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* <code>[[kubectl apply --server-side]]</code>
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* <code>[[kubectl delete]]</code>
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* [[creationTimestamp]] [[Kubernetes metadata|metadata]]
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* Terraform resource: <code>[[Terraform resource: kubernetes_deployment|kubernetes_deployment]]</code>
  
 
== See also ==
 
== See also ==
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* {{kubectl}}
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* {{kubectl apply}}
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* {{K8s}}
 
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[[Category:Kubernetes]]
 
[[Category:Kubernetes]]

Latest revision as of 10:59, 12 January 2024

kubectl apply apply a configuration to a resource by filename or stdin [1]

kubectl apply --help 

--recursive

kubectl apply -f https://k8s.io/examples/application/mysql/mysql-pv.yaml
persistentvolume/mysql-pv-volume created
persistentvolumeclaim/mysql-pv-claim created

Activities[edit]

Errors[edit]

kubectl apply -f ./file.yaml
Error from server (InternalError): error when creating "./file.yaml": Internal error occurred: failed calling webhook "virtualmachines- mutator.kubevirt.io": Post https://virt-api.kubevirt.svc:443/virtualmachines-mutate?timeout=30s: service "virt-api" not found

  Warning: resource configmaps/kube-root-ca.crt is missing the kubectl.kubernetes.io/last-applied-configuration annotation which is required by kubectl apply. kubectl apply should only be used on resources created declaratively by either kubectl create --save-config or kubectl apply. The missing annotation will be patched automatically. secret/default-token-7z4zd created
Error from server (Conflict): error when applying patch:
.../...
to:
Resource: "/v1, Resource=configmaps", GroupVersionKind: "/v1, Kind=ConfigMap"
Name: "kube-root-ca.crt", Namespace: "your-namespace"
for: "your.yaml": Operation cannot be fulfilled on configmaps "kube-root-ca.crt": the object has been modified; please apply your changes to the latest version and try again

error: error parsing yourfile: error converting YAML to JSON: yaml: line 11: 
mapping values are not allowed in this context

error: error validating "yourfile": error validating data: 

[ValidationError(PersistentVolumeClaim.metadata.finalizers): invalid type for 
io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta.finalizers: got "string", expected "array", 

ValidationError(PersistentVolumeClaim): unknown field "name" in 
io.k8s.api.core.v1.PersistentVolumeClaim ]; if you choose to ignore these errors, turn 

validation off with --validate=false

Warning[edit]

Warning: resource endpoints/your-endpoint is missing the kubectl.kubernetes.io/last-applied-configuration annotation which is required by kubectl apply. kubectl apply should only be used on resources created declaratively by either kubectl create --save-config or kubectl apply. The missing annotation will be patched automatically.
endpoints/your-endpoint configured

Related[edit]

See also[edit]

  • ↑ https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#apply
    • Retrieved from "https://www.wikieduonline.com/index.php?title=Kubectl_apply&oldid=288519"

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