/
vpc_cni.go
105 lines (89 loc) · 2.07 KB
/
vpc_cni.go
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package util
import (
"context"
"fmt"
ekstypes "github.com/aws/aws-sdk-go-v2/service/eks/types"
"github.com/awslabs/eksdemo/pkg/kubernetes"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/yaml"
)
func EnablePrefixAssignment(cluster *ekstypes.Cluster) error {
kubeContext, err := kubernetes.KubeContextForCluster(cluster)
if err != nil {
return err
}
client, err := kubernetes.Client(kubeContext)
if err != nil {
return err
}
patch, _ := yaml.YAMLToJSON([]byte(prefixAssignmentPatch))
_, err = client.AppsV1().DaemonSets("kube-system").Patch(
context.Background(),
"aws-node",
types.StrategicMergePatchType,
patch,
metav1.PatchOptions{},
)
if err != nil {
return err
}
fmt.Printf("Patched daemonset \"aws-node\" with strategic merge: %sPrefix Assignment is enabled.\n",
prefixAssignmentPatch)
return nil
}
func EnableSecurityGroupsForPods(cluster *ekstypes.Cluster) error {
kubeContext, err := kubernetes.KubeContextForCluster(cluster)
if err != nil {
return err
}
client, err := kubernetes.Client(kubeContext)
if err != nil {
return err
}
patch, _ := yaml.YAMLToJSON([]byte(securityGroupsForPodsPatch))
_, err = client.AppsV1().DaemonSets("kube-system").Patch(
context.Background(),
"aws-node",
types.StrategicMergePatchType,
patch,
metav1.PatchOptions{},
)
if err != nil {
return err
}
fmt.Printf("Patched daemonset \"aws-node\" with strategic merge: %sSecurity Groups for Pods is enabled.\n",
securityGroupsForPodsPatch)
return nil
}
const prefixAssignmentPatch = `
---
spec:
template:
spec:
containers:
- name: aws-node
env:
- name: ENABLE_PREFIX_DELEGATION
value: "true"
- name: WARM_PREFIX_TARGET
value: "1"
...
`
const securityGroupsForPodsPatch = `
---
spec:
template:
spec:
containers:
- name: aws-node
env:
- name: ENABLE_POD_ENI
value: "true"
initContainers:
- name: aws-vpc-cni-init
env:
- name: DISABLE_TCP_EARLY_DEMUX
value: "true"
...
`