712612c2dc
Kubelet doesn't perform checkpointing and loses all its internal states after restarts. It'd then mistaken pods from the api server as new pods and attempt to go through the admission process. This may result in pods being rejected even though they are running on the node (e.g., out of disk situation). This change adds a condition to check whether the pod was seen before and categorize such pods as updates. The change also removes freeze/unfreeze mechanism used to work around such cases, since it is no longer needed and it stopped working correctly ever since we switched to incremental updates.
104 lines
3.1 KiB
Go
104 lines
3.1 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors All rights reserved.
|
|
|
|
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 kubelet
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
"testing"
|
|
"time"
|
|
|
|
cadvisorapi "github.com/google/cadvisor/info/v1"
|
|
cadvisorapiv2 "github.com/google/cadvisor/info/v2"
|
|
"k8s.io/kubernetes/pkg/api"
|
|
"k8s.io/kubernetes/pkg/client/record"
|
|
"k8s.io/kubernetes/pkg/kubelet/cadvisor"
|
|
"k8s.io/kubernetes/pkg/kubelet/cm"
|
|
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
|
|
"k8s.io/kubernetes/pkg/kubelet/network"
|
|
kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
|
|
"k8s.io/kubernetes/pkg/kubelet/status"
|
|
)
|
|
|
|
func TestRunOnce(t *testing.T) {
|
|
cadvisor := &cadvisor.Mock{}
|
|
cadvisor.On("MachineInfo").Return(&cadvisorapi.MachineInfo{}, nil)
|
|
cadvisor.On("DockerImagesFsInfo").Return(cadvisorapiv2.FsInfo{
|
|
Usage: 400 * mb,
|
|
Capacity: 1000 * mb,
|
|
Available: 600 * mb,
|
|
}, nil)
|
|
cadvisor.On("RootFsInfo").Return(cadvisorapiv2.FsInfo{
|
|
Usage: 9 * mb,
|
|
Capacity: 10 * mb,
|
|
}, nil)
|
|
podManager := kubepod.NewBasicPodManager(kubepod.NewFakeMirrorClient())
|
|
diskSpaceManager, _ := newDiskSpaceManager(cadvisor, DiskSpacePolicy{})
|
|
fakeRuntime := &kubecontainer.FakeRuntime{}
|
|
basePath, err := ioutil.TempDir(os.TempDir(), "kubelet")
|
|
if err != nil {
|
|
t.Fatalf("can't make a temp rootdir %v", err)
|
|
}
|
|
defer os.RemoveAll(basePath)
|
|
kb := &Kubelet{
|
|
rootDirectory: basePath,
|
|
recorder: &record.FakeRecorder{},
|
|
cadvisor: cadvisor,
|
|
nodeLister: testNodeLister{},
|
|
nodeInfo: testNodeInfo{},
|
|
statusManager: status.NewManager(nil, podManager),
|
|
containerRefManager: kubecontainer.NewRefManager(),
|
|
podManager: podManager,
|
|
os: kubecontainer.FakeOS{},
|
|
volumeManager: newVolumeManager(),
|
|
diskSpaceManager: diskSpaceManager,
|
|
containerRuntime: fakeRuntime,
|
|
}
|
|
kb.containerManager = cm.NewStubContainerManager()
|
|
|
|
kb.networkPlugin, _ = network.InitNetworkPlugin([]network.NetworkPlugin{}, "", network.NewFakeHost(nil))
|
|
if err := kb.setupDataDirs(); err != nil {
|
|
t.Errorf("Failed to init data dirs: %v", err)
|
|
}
|
|
|
|
pods := []*api.Pod{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
UID: "12345678",
|
|
Name: "foo",
|
|
Namespace: "new",
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{Name: "bar"},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
podManager.SetPods(pods)
|
|
results, err := kb.runOnce(pods, time.Millisecond)
|
|
if err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
if results[0].Err != nil {
|
|
t.Errorf("unexpected run pod error: %v", results[0].Err)
|
|
}
|
|
if results[0].Pod.Name != "foo" {
|
|
t.Errorf("unexpected pod: %q", results[0].Pod.Name)
|
|
}
|
|
}
|