64 lines
2.0 KiB
Go
64 lines
2.0 KiB
Go
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package main
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import (
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"fmt"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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"log"
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"time"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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)
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func main() {
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config, err := rest.InClusterConfig()
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if err != nil {
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panic(err.Error())
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}
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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panic(err.Error())
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}
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for {
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namespaces, err := clientset.CoreV1().Namespaces().List(metav1.ListOptions{})
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if err != nil {
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panic(err.Error())
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}
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for _, ns := range namespaces.Items {
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fmt.Printf("Checking for LimitRange named extreme-request-defaults in namespace '%v'\n", ns.Name)
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if limitRange, err := clientset.CoreV1().LimitRanges(ns.Name).List(metav1.ListOptions{FieldSelector:"metadata.name=extreme-request-defaults"}); err == nil && len(limitRange.Items) == 0 {
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fmt.Printf("Trying to create LimitaRange\n")
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limits := []v1.LimitRangeItem{
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{
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DefaultRequest:v1.ResourceList{"memory": *resource.NewQuantity(1024*1024*1024*1024, resource.BinarySI)},
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},
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}
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if _, err := clientset.CoreV1().LimitRanges(ns.Name).Create(&v1.LimitRange{Spec: v1.LimitRangeSpec{Limits: limits}}); err != nil {
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log.Printf("Unable to create LimitRange in namespace '%v'\n", ns.Name)
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}
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}
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}
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fmt.Printf("There are %d pods in the cluster\n", len(namespaces.Items))
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// Examples for error handling:
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// - Use helper functions like e.g. errors.IsNotFound()
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// - And/or cast to StatusError and use its properties like e.g. ErrStatus.Message
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_, err = clientset.CoreV1().Pods("default").Get("example-xxxxx", metav1.GetOptions{})
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if errors.IsNotFound(err) {
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fmt.Printf("Pod not found\n")
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} else if statusError, isStatus := err.(*errors.StatusError); isStatus {
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fmt.Printf("Error getting pod %v\n", statusError.ErrStatus.Message)
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} else if err != nil {
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panic(err.Error())
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} else {
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fmt.Printf("Found pod\n")
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}
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time.Sleep(10 * time.Second)
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}
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}
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