我在运行CoreOS 1409.7.0的裸机设置中运行了一个不安全的测试Kubernetes v1.7.5。我在主节点上安装了api-server，controller，scheduler，proxy和kubelet，在3个其他工作节点上安装了kubelet和代理，flanneld使用contrib/init k8s project中提供的systemd服务文件。
群集启动时，一切都运行良好。我可以部署仪表板和一些我自定义的部署（consul客户端/服务器，nginx等），它们都运行良好。但是，如果我让群集运行几个小时，我会回来，每个pod都将在CrashLoopBackup中，重启多次。解决问题的唯一方法是在每台机器上重新启动kubelet。问题立即消失，一切都恢复正常。
在kubelet进入状态不佳后从日志中记录：
Sep 10 19:09:06 k8-app-2.example.com kubelet[1025]: , failed to "StartContainer" for "nginx-server" with CrashLoopBackOff: "Back-off 5m0s restarting failed container=nginx-server pod=nginx-deployment-617048525-mgf0v_default(f6dff9f2-95db-11e7-b533-02c75fb65df0)"
Sep 10 19:09:06 k8-app-2.example.com kubelet[1025]: ]
Sep 10 19:09:07 k8-app-2.example.com kubelet[1025]: I0910 19:09:07.286367 1025 kuberuntime_manager.go:457] Container {Name:nginx-server Image:nginx Command:[] Args:[] WorkingDir: Ports:[{Name:http HostPort:0 ContainerPort:80 Protocol:TCP HostIP:}] EnvFrom:[] Env:[{Name:NODE_IP Value: ValueFrom:&EnvVarSource{FieldRef:&ObjectFieldSelector{APIVersion:v1,FieldPath:status.hostIP,},ResourceFieldRef:nil,ConfigMapKeyRef:nil,SecretKeyRef:nil,}} {Name:POD_IP Value: ValueFrom:&EnvVarSource{FieldRef:&ObjectFieldSelector{APIVersion:v1,FieldPath:status.podIP,},ResourceFieldRef:nil,ConfigMapKeyRef:nil,SecretKeyRef:nil,}}] Resources:{Limits:map[] Requests:map[]} VolumeMounts:[] LivenessProbe:&Probe{Handler:Handler{Exec:nil,HTTPGet:&HTTPGetAction{Path:/,Port:80,Host:,Scheme:HTTP,HTTPHeaders:[],},TCPSocket:nil,},InitialDelaySeconds:10,TimeoutSeconds:1,PeriodSeconds:10,SuccessThreshold:1,FailureThreshold:3,} ReadinessProbe:nil Lifecycle:nil TerminationMessagePath:/dev/termination-log TerminationMessagePolicy:File ImagePullPolicy:Always SecurityContext:nil Stdin:false StdinOnce:false TTY:false} is dead, but RestartPolicy says that we should restart it.
Sep 10 19:09:07 k8-app-2.example.com kubelet[1025]: I0910 19:09:07.286795 1025 kuberuntime_manager.go:457] Container {Name:regup Image:registry.hub.docker.com/spunon/regup:latest Command:[] Args:[] WorkingDir: Ports:[] EnvFrom:[] Env:[{Name:SERVICE_NAME Value:nginx ValueFrom:nil} {Name:SERVICE_PORT Value:80 ValueFrom:nil} {Name:NODE_IP Value: ValueFrom:&EnvVarSource{FieldRef:&ObjectFieldSelector{APIVersion:v1,FieldPath:status.hostIP,},ResourceFieldRef:nil,ConfigMapKeyRef:nil,SecretKeyRef:nil,}} {Name:POD_IP Value: ValueFrom:&EnvVarSource{FieldRef:&ObjectFieldSelector{APIVersion:v1,FieldPath:status.podIP,},ResourceFieldRef:nil,ConfigMapKeyRef:nil,SecretKeyRef:nil,}}] Resources:{Limits:map[] Requests:map[]} VolumeMounts:[] LivenessProbe:nil ReadinessProbe:nil Lifecycle:nil TerminationMessagePath:/dev/termination-log TerminationMessagePolicy:File ImagePullPolicy:Always SecurityContext:nil Stdin:false StdinOnce:false TTY:false} is dead, but RestartPolicy says that we should restart it.
Sep 10 19:09:07 k8-app-2.example.com kubelet[1025]: I0910 19:09:07.287071 1025 kuberuntime_manager.go:741] checking backoff for container "nginx-server" in pod "nginx-deployment-617048525-mgf0v_default(f6dff9f2-95db-11e7-b533-02c75fb65df0)"
Sep 10 19:09:07 k8-app-2.example.com kubelet[1025]: I0910 19:09:07.287376 1025 kuberuntime_manager.go:751] Back-off 5m0s restarting failed container=nginx-server pod=nginx-deployment-617048525-mgf0v_default(f6dff9f2-95db-11e7-b533-02c75fb65df0)
Sep 10 19:09:07 k8-app-2.example.com kubelet[1025]: I0910 19:09:07.287601 1025 kuberuntime_manager.go:741] checking backoff for container "regup" in pod "nginx-deployment-617048525-mgf0v_default(f6dff9f2-95db-11e7-b533-02c75fb65df0)"
Sep 10 19:09:07 k8-app-2.example.com kubelet[1025]: I0910 19:09:07.287863 1025 kuberuntime_manager.go:751] Back-off 5m0s restarting failed container=regup pod=nginx-deployment-617048525-mgf0v_default(f6dff9f2-95db-11e7-b533-02c75fb65df0)
编辑： Here are the logs from the kubelet when the issue seems to start