kubernetes cidr 源码
kubernetes cidr 代码
文件路径：/staging/src/k8s.io/component-helpers/node/util/cidr.go
/*
Copyright 2021 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package util
import (
"context"
"encoding/json"
"fmt"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/klog/v2"
)
type nodeForCIDRMergePatch struct {
Spec nodeSpecForMergePatch `json:"spec"`
}
type nodeSpecForMergePatch struct {
PodCIDR string `json:"podCIDR"`
PodCIDRs []string `json:"podCIDRs,omitempty"`
}
// PatchNodeCIDRs patches the specified node.CIDR=cidrs[0] and node.CIDRs to the given value.
func PatchNodeCIDRs(c clientset.Interface, node types.NodeName, cidrs []string) error {
// set the pod cidrs list and set the old pod cidr field
patch := nodeForCIDRMergePatch{
Spec: nodeSpecForMergePatch{
PodCIDR: cidrs[0],
PodCIDRs: cidrs,
},
}
patchBytes, err := json.Marshal(&patch)
if err != nil {
return fmt.Errorf("failed to json.Marshal CIDR: %v", err)
}
klog.V(4).Infof("cidrs patch bytes are:%s", string(patchBytes))
if _, err := c.CoreV1().Nodes().Patch(context.TODO(), string(node), types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}); err != nil {
return fmt.Errorf("failed to patch node CIDR: %v", err)
}
return nil
}
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