unboundsoftware/default-request-adder
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Fixed so it actually works

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This commit is contained in:
Joakim Olsson
2019-03-11 19:58:47 +01:00
parent 64662a28ce
commit d6d869d980
2 changed files with 27 additions and 40 deletions
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Dockerfile
+2 -1
View File
@@ -1,7 +1,8 @@
FROM golang:1.11-stretch as builder FROM golang:1.11-stretch as builder
WORKDIR /build WORKDIR /build
COPY * ./ COPY go.mod go.sum ./
RUN go get RUN go get
COPY * ./
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o default-request-adder . RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o default-request-adder .
FROM scratch FROM scratch
main.go
+25 -39
View File
@@ -1,16 +1,12 @@
package main package main
import ( import (
"fmt"
"k8s.io/api/core/v1" "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource" "k8s.io/apimachinery/pkg/api/resource"
"log"
"time"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes" "k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest" "k8s.io/client-go/rest"
"log"
) )
func main() { func main() {
@@ -22,42 +18,32 @@ func main() {
if err != nil { if err != nil {
panic(err.Error()) panic(err.Error())
} }
for { namespaces, err := clientset.CoreV1().Namespaces().List(metav1.ListOptions{})
namespaces, err := clientset.CoreV1().Namespaces().List(metav1.ListOptions{}) if err != nil {
if err != nil { panic(err.Error())
panic(err.Error()) }
}
for _, ns := range namespaces.Items { for _, ns := range namespaces.Items {
fmt.Printf("Checking for LimitRange named extreme-request-defaults in namespace '%v'\n", ns.Name) log.Printf("Checking for LimitRange named extreme-request-defaults in namespace '%v'\n", ns.Name)
if limitRange, err := clientset.CoreV1().LimitRanges(ns.Name).List(metav1.ListOptions{FieldSelector:"metadata.name=extreme-request-defaults"}); err == nil && len(limitRange.Items) == 0 { if limitRange, err := clientset.CoreV1().LimitRanges(ns.Name).List(metav1.ListOptions{FieldSelector: "metadata.name=extreme-request-defaults"}); err == nil && len(limitRange.Items) == 0 {
fmt.Printf("Trying to create LimitaRange\n") log.Printf("Trying to create LimitaRange\n")
limits := []v1.LimitRangeItem{ limits := []v1.LimitRangeItem{
{ {
DefaultRequest:v1.ResourceList{"memory": *resource.NewQuantity(1024*1024*1024*1024, resource.BinarySI)}, DefaultRequest: v1.ResourceList{"memory": *resource.NewQuantity(1024*1024*1024*1024, resource.BinarySI)},
}, Type: "Container",
} },
if _, err := clientset.CoreV1().LimitRanges(ns.Name).Create(&v1.LimitRange{Spec: v1.LimitRangeSpec{Limits: limits}}); err != nil { }
log.Printf("Unable to create LimitRange in namespace '%v'\n", ns.Name) limitRange := v1.LimitRange{
} Spec: v1.LimitRangeSpec{Limits: limits},
ObjectMeta: metav1.ObjectMeta{
Name: "extreme-request-defaults",
},
}
if _, err := clientset.CoreV1().LimitRanges(ns.Name).Create(&limitRange); err != nil {
log.Printf("Unable to create LimitRange in namespace '%v': Error: %v\n", ns.Name, err)
} else {
log.Printf("LimitRange extreme-request-defaults created in namespace '%v'\n", ns.Name)
} }
} }
fmt.Printf("There are %d pods in the cluster\n", len(namespaces.Items))
// Examples for error handling:
// - Use helper functions like e.g. errors.IsNotFound()
// - And/or cast to StatusError and use its properties like e.g. ErrStatus.Message
_, err = clientset.CoreV1().Pods("default").Get("example-xxxxx", metav1.GetOptions{})
if errors.IsNotFound(err) {
fmt.Printf("Pod not found\n")
} else if statusError, isStatus := err.(*errors.StatusError); isStatus {
fmt.Printf("Error getting pod %v\n", statusError.ErrStatus.Message)
} else if err != nil {
panic(err.Error())
} else {
fmt.Printf("Found pod\n")
}
time.Sleep(10 * time.Second)
} }
} }