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profiles.go
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profiles.go
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/*
Copyright 2022 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 debug
import (
"fmt"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
)
// profileLegacy represents the legacy debugging profile which is backwards-compatible with 1.23 behavior.
func profileLegacy(pod *corev1.Pod, containerName string, target runtime.Object) error {
switch target.(type) {
case *corev1.Pod:
// do nothing to the copied pod
return nil
case *corev1.Node:
const volumeName = "host-root"
pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{
Name: volumeName,
VolumeSource: corev1.VolumeSource{
HostPath: &corev1.HostPathVolumeSource{Path: "/"},
},
})
for i := range pod.Spec.Containers {
container := &pod.Spec.Containers[i]
if container.Name != containerName {
continue
}
container.VolumeMounts = append(container.VolumeMounts, corev1.VolumeMount{
MountPath: "/host",
Name: volumeName,
})
}
pod.Spec.HostIPC = true
pod.Spec.HostNetwork = true
pod.Spec.HostPID = true
return nil
default:
return fmt.Errorf("the %s profile doesn't support objects of type %T", ProfileLegacy, target)
}
}