I am using Velero to create and backup and restore, Velero has controllers which get triggered when I can create the custom objects.
import veleroApi "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
restoreObj := veleroApi.Restore{
TypeMeta: metav1.TypeMeta{},
ObjectMeta: metav1.ObjectMeta{
DeletionGracePeriodSeconds: &gracePeriodSeconds,
},
Spec: veleroApi.RestoreSpec{
BackupName: "backup-name-20211101",
RestorePVs: &restorePV,
},
Status: veleroApi.RestoreStatus{},
}
But how can I submit this custom object to the Kube API server?
I used API client to apply the changes:
apiClient.CoreV1().RESTClient().Patch(types.ApplyPatchType).Body(restoreObj).Do(context)
But I am getting:
unknown type used for body: {TypeMeta:{Kind:Restore APIVersion:velero.io/v1} ObjectMeta:{Name: GenerateName: Namespace:velero SelfLink: UID: ResourceVersion: Generation:0 CreationTimestamp:0001-01-01 00:00:00 +0000 UTC DeletionTimestamp:<nil> DeletionGracePeriodSeconds:0xc000256018 Labels:map[] Annotations:map[] OwnerReferences:[] Finalizers:[] ClusterName: ManagedFields:[]} Spec:{BackupName:backup-name-20211101 ScheduleName: IncludedNamespaces:[] ExcludedNamespaces:[] IncludedResources:[] ExcludedResources:[] NamespaceMapping:map[] LabelSelector:nil RestorePVs:0xc0007a9088 PreserveNodePorts:<nil> IncludeClusterResources:<nil> Hooks:{Resources:[]}} Status:{Phase: ValidationErrors:[] Warnings:0 Errors:0 FailureReason: StartTimestamp:<nil> CompletionTimestamp:<nil> Progress:<nil>}}
If you would like to create a client for custom object follow the following steps:
kubectl describe CustomResourceDefinition <custom resource definition name>
Note down the API and version
and the Kind
, as an example it would look like:
API Version: apiextensions.k8s.io/v1
Kind: CustomResourceDefinition
Here, apiextensions.k8s.io
is API and v1
is the version.
API version
that you got from step 1 is in the list of APIs:kubectl get --raw "/"
func getClusterConfig() *rest.Config {
config, err := rest.InClusterConfig()
if err != nil {
glog.Fatal(err.Error())
}
return config
}
func getRestClient() *rest.RESTClient {
cfg := getClusterConfig()
gv := schema.GroupVersion{Group: "<API>", Version: "<version>"}
cfg.GroupVersion = &gv
cfg.APIPath = "/apis" // you can verify the path from step 2
var Scheme = runtime.NewScheme()
var Codecs = serializer.NewCodecFactory(Scheme)
cfg.NegotiatedSerializer = Codecs.WithoutConversion()
restClient, err := rest.RESTClientFor(cfg)
if err != nil {
panic(err.Error())
}
return restClient
}
Alternatively, check the answer from kozmo here
For Velero you can reuse the client they have.
As an example take a look at this code:
restore, err := o.client.VeleroV1().Restores(restore.Namespace).Create(context.TODO(), restore, metav1.CreateOptions{})