4d7d7faa81
The docker runtime doesn't tear down networking when GC-ing pods. rkt already does so make docker do it too. To ensure this happens, networking is always torn down for the container even if the container itself is not deleted. This prevents IPAM from leaking when the pod gets killed for some reason outside kubelet (like docker restart) or when pods are killed while kubelet isn't running. Fixes: https://github.com/kubernetes/kubernetes/issues/14940 Related: https://github.com/kubernetes/kubernetes/pull/35572
81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
// +build linux
|
|
|
|
/*
|
|
Copyright 2015 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 dockertools
|
|
|
|
import (
|
|
dockertypes "github.com/docker/engine-api/types"
|
|
dockercontainer "github.com/docker/engine-api/types/container"
|
|
|
|
"k8s.io/kubernetes/pkg/api/v1"
|
|
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
|
|
)
|
|
|
|
// These two functions are OS specific (for now at least)
|
|
func updateHostConfig(hc *dockercontainer.HostConfig, opts *kubecontainer.RunContainerOptions) {
|
|
// no-op, there is a windows implementation that is different.
|
|
}
|
|
|
|
func DefaultMemorySwap() int64 {
|
|
return 0
|
|
}
|
|
|
|
func getContainerIP(container *dockertypes.ContainerJSON) string {
|
|
result := ""
|
|
if container.NetworkSettings != nil {
|
|
result = container.NetworkSettings.IPAddress
|
|
|
|
// Fall back to IPv6 address if no IPv4 address is present
|
|
if result == "" {
|
|
result = container.NetworkSettings.GlobalIPv6Address
|
|
}
|
|
}
|
|
return result
|
|
}
|
|
|
|
// We don't want to override the networking mode on Linux.
|
|
func getNetworkingMode() string { return "" }
|
|
|
|
// Returns true if the container name matches the infrastructure's container name
|
|
func containerProvidesPodIP(containerName string) bool {
|
|
return containerName == PodInfraContainerName
|
|
}
|
|
|
|
// Only the infrastructure container needs network setup/teardown
|
|
func containerIsNetworked(containerName string) bool {
|
|
return containerName == PodInfraContainerName
|
|
}
|
|
|
|
// Returns Seccomp and AppArmor Security options
|
|
func (dm *DockerManager) getSecurityOpts(pod *v1.Pod, ctrName string) ([]dockerOpt, error) {
|
|
var securityOpts []dockerOpt
|
|
if seccompOpts, err := dm.getSeccompOpts(pod, ctrName); err != nil {
|
|
return nil, err
|
|
} else {
|
|
securityOpts = append(securityOpts, seccompOpts...)
|
|
}
|
|
|
|
if appArmorOpts, err := dm.getAppArmorOpts(pod, ctrName); err != nil {
|
|
return nil, err
|
|
} else {
|
|
securityOpts = append(securityOpts, appArmorOpts...)
|
|
}
|
|
|
|
return securityOpts, nil
|
|
}
|