Kubernetes Pod与CrashLoopBackOff失败

我正在按照这个指南来设置一个使用minikube的pod,并从一个私有的存储库中提取一个镜像:hub.docker.com

当试图build立一个吊舱拉图像,我看到“CrashLoopBackoff”

荚configuration:

apiVersion: v1 kind: Pod metadata: name: private-reg spec: containers: - name: private-reg-container image: ha/prod:latest imagePullSecrets: - name: regsecret 

输出“get pod”

 kubectl get pod private-reg NAME READY STATUS RESTARTS AGE private-reg 0/1 CrashLoopBackOff 5 4m 

据我可以看到有没有问题的图像,如果我把他们手动和运行他们,他们的作品。

(你可以看到“成功拉出图片”ha / prod:latest“)

这个问题也会发生,如果我推一个通用的图像到存储库,如centos,并试图拉和运行使用pod。

此外,秘密似乎工作正常,我可以看到“拉”计入私人存储库。

这里是命令的输出:

kubectl描述豆荚私人登记:

 [~]$ kubectl describe pods private-reg Name: private-reg Namespace: default Node: minikube/192.168.99.100 Start Time: Thu, 22 Jun 2017 17:13:24 +0300 Labels: <none> Annotations: <none> Status: Running IP: 172.17.0.5 Controllers: <none> Containers: private-reg-container: Container ID: docker://1aad64750d0ba9ba826fe4f12c8814f7db77293078f8047feec686fcd8f90132 Image: ha/prod:latest Image ID: docker://sha256:7335859e2071af518bcd0e2f373f57c1da643bb37c7e6bbc125d171ff98f71c0 Port: State: Waiting Reason: CrashLoopBackOff Last State: Terminated Reason: Completed Exit Code: 0 Started: Mon, 01 Jan 0001 00:00:00 +0000 Finished: Thu, 22 Jun 2017 17:20:04 +0300 Ready: False Restart Count: 6 Environment: <none> Mounts: /var/run/secrets/kubernetes.io/serviceaccount from default-token-bhvgz (ro) Conditions: Type Status Initialized True Ready False PodScheduled True Volumes: default-token-bhvgz: Type: Secret (a volume populated by a Secret) SecretName: default-token-bhvgz Optional: false QoS Class: BestEffort Node-Selectors: <none> Tolerations: <none> Events: FirstSeen LastSeen Count From SubObjectPath Type Reason Message --------- -------- ----- ---- ------------- -------- ------ ------- 9m 9m 1 default-scheduler Normal Scheduled Successfully assigned private-reg to minikube 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id 431fecfd1d2ca03d29fd88fd6c663e66afb59dc5e86487409002dd8e9987945c 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id 431fecfd1d2ca03d29fd88fd6c663e66afb59dc5e86487409002dd8e9987945c 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id 223e6af99bb950570a27056d7401137ff9f3dc895f4f313a36e73ef6489eb61a 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id 223e6af99bb950570a27056d7401137ff9f3dc895f4f313a36e73ef6489eb61a 8m 8m 2 kubelet, minikube Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "private-reg-container" with CrashLoopBackOff: "Back-off 10s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)" 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id a98377f9aedc5947fe1dd006caddb11fb48fa2fd0bb06c20667e0c8b83a3ab6a 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id a98377f9aedc5947fe1dd006caddb11fb48fa2fd0bb06c20667e0c8b83a3ab6a 8m 8m 2 kubelet, minikube Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "private-reg-container" with CrashLoopBackOff: "Back-off 20s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)" 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id 261f430a80ff5a312bdbdee78558091a9ae7bc9fc6a9e0676207922f1a576841 8m 8m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id 261f430a80ff5a312bdbdee78558091a9ae7bc9fc6a9e0676207922f1a576841 8m 7m 3 kubelet, minikube Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "private-reg-container" with CrashLoopBackOff: "Back-off 40s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)" 7m 7m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id 7251ab76853d4178eff59c10bb41e52b2b1939fbee26e546cd564e2f6b4a1478 7m 7m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id 7251ab76853d4178eff59c10bb41e52b2b1939fbee26e546cd564e2f6b4a1478 7m 5m 7 kubelet, minikube Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "private-reg-container" with CrashLoopBackOff: "Back-off 1m20s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)" 5m 5m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id 347868d03fc9730417cf234e4c96195bb9b45a6cc9d9d97973855801d52e2a02 5m 5m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id 347868d03fc9730417cf234e4c96195bb9b45a6cc9d9d97973855801d52e2a02 5m 3m 12 kubelet, minikube Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "private-reg-container" with CrashLoopBackOff: "Back-off 2m40s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)" 9m 2m 7 kubelet, minikube spec.containers{private-reg-container} Normal Pulling pulling image "ha/prod:latest" 2m 2m 1 kubelet, minikube spec.containers{private-reg-container} Normal Started Started container with id 1aad64750d0ba9ba826fe4f12c8814f7db77293078f8047feec686fcd8f90132 8m 2m 7 kubelet, minikube spec.containers{private-reg-container} Normal Pulled Successfully pulled image "ha/prod:latest" 2m 2m 1 kubelet, minikube spec.containers{private-reg-container} Normal Created Created container with id 1aad64750d0ba9ba826fe4f12c8814f7db77293078f8047feec686fcd8f90132 8m <invalid> 40 kubelet, minikube spec.containers{private-reg-container} Warning BackOff Back-off restarting failed container 2m <invalid> 14 kubelet, minikube Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "private-reg-container" with CrashLoopBackOff: "Back-off 5m0s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)" 

这里是命令的输出:

kubectl – v = 8日志private-reg

 I0622 17:35:01.043739 15981 cached_discovery.go:71] returning cached discovery info from /home/demo/.kube/cache/discovery/192.168.99.100_8443/apps/v1beta1/serverresources.json I0622 17:35:01.043951 15981 cached_discovery.go:71] returning cached discovery info from /home/demo/.kube/cache/discovery/192.168.99.100_8443/v1/serverresources.json I0622 17:35:01.045061 15981 cached_discovery.go:118] returning cached discovery info from /home/demo/.kube/cache/discovery/192.168.99.100_8443/servergroups.json I0622 17:35:01.045175 15981 round_trippers.go:395] GET https://192.168.99.100:8443/api/v1/namespaces/default/pods/private-reg I0622 17:35:01.045182 15981 round_trippers.go:402] Request Headers: I0622 17:35:01.045187 15981 round_trippers.go:405] Accept: application/json, */* I0622 17:35:01.045191 15981 round_trippers.go:405] User-Agent: kubectl/v1.6.6 (linux/amd64) kubernetes/7fa1c17 I0622 17:35:01.072863 15981 round_trippers.go:420] Response Status: 200 OK in 27 milliseconds I0622 17:35:01.072900 15981 round_trippers.go:423] Response Headers: I0622 17:35:01.072921 15981 round_trippers.go:426] Content-Type: application/json I0622 17:35:01.072930 15981 round_trippers.go:426] Content-Length: 2216 I0622 17:35:01.072936 15981 round_trippers.go:426] Date: Thu, 22 Jun 2017 14:35:31 GMT I0622 17:35:01.072994 15981 request.go:991] Response Body: {"kind":"Pod","apiVersion":"v1","metadata":{"name":"private-reg","namespace":"default","selfLink":"/api/v1/namespaces/default/pods/private-reg","uid":"f4340638-5754-11e7-978a-08002773375c","resourceVersion":"3070","creationTimestamp":"2017-06-22T14:13:24Z"},"spec":{"volumes":[{"name":"default-token-bhvgz","secret":{"secretName":"default-token-bhvgz","defaultMode":420}}],"containers":[{"name":"private-reg-container","image":"ha/prod:latest","resources":{},"volumeMounts":[{"name":"default-token-bhvgz","readOnly":true,"mountPath":"/var/run/secrets/kubernetes.io/serviceaccount"}],"terminationMessagePath":"/dev/termination-log","terminationMessagePolicy":"File","imagePullPolicy":"Always"}],"restartPolicy":"Always","terminationGracePeriodSeconds":30,"dnsPolicy":"ClusterFirst","serviceAccountName":"default","serviceAccount":"default","nodeName":"minikube","securityContext":{},"imagePullSecrets":[{"name":"regsecret"}],"schedulerName":"default-scheduler"},"status":{"phase":"Running","conditions":[{"type":"Initialized","status":"True","lastProbeTime":null,"lastTransitionTime":"2017-06-22T14:13:24Z"},{"type":"Ready","status":"False","lastProbeTime":null,"lastTransitionTime":"2017-06-22T14:13:24Z","reason":"ContainersNotReady","message":"containers with unready status: [private-reg-container]"},{"type":"PodScheduled","status":"True","lastProbeTime":null,"lastTransitionTime":"2017-06-22T14:13:24Z"}],"hostIP":"192.168.99.100","podIP":"172.17.0.5","startTime":"2017-06-22T14:13:24Z","containerStatuses":[{"name":"private-reg-container","state":{"waiting":{"reason":"CrashLoopBackOff","message":"Back-off 5m0s restarting failed container=private-reg-container pod=private-reg_default(f4340638-5754-11e7-978a-08002773375c)"}},"lastState":{"terminated":{"exitCode":0,"reason":"Completed","startedAt":null,"finishedAt":"2017-06-22T14:30:36Z","containerID":"docker://a4cb436a79b0b21bb385e544d424b2444a80ca66160ef21af30ab69ed2e23b32"}},"ready":false,"restartCount":8,"image":"ha/prod:latest","imageID":"docker://sha256:7335859e2071af518bcd0e2f373f57c1da643bb37c7e6bbc125d171ff98f71c0","containerID":"docker://a4cb436a79b0b21bb385e544d424b2444a80ca66160ef21af30ab69ed2e23b32"}],"qosClass":"BestEffort"}} I0622 17:35:01.074108 15981 round_trippers.go:395] GET https://192.168.99.100:8443/api/v1/namespaces/default/pods/private-reg/log I0622 17:35:01.074126 15981 round_trippers.go:402] Request Headers: I0622 17:35:01.074132 15981 round_trippers.go:405] Accept: application/json, */* I0622 17:35:01.074137 15981 round_trippers.go:405] User-Agent: kubectl/v1.6.6 (linux/amd64) kubernetes/7fa1c17 I0622 17:35:01.079257 15981 round_trippers.go:420] Response Status: 200 OK in 5 milliseconds I0622 17:35:01.079289 15981 round_trippers.go:423] Response Headers: I0622 17:35:01.079299 15981 round_trippers.go:426] Content-Type: text/plain I0622 17:35:01.079307 15981 round_trippers.go:426] Content-Length: 0 I0622 17:35:01.079315 15981 round_trippers.go:426] Date: Thu, 22 Jun 2017 14:35:31 GMT 

我怎样才能debugging这个问题?

  • 更新输出:

  • kubectl –v = 8 logs ps-agent-2028336249-3pk43 –namespace = default -p

    I0625 11:30:01.569903 13420 round_trippers.go:395] GET I0625 11:30:01.569920 13420 round_trippers.go:402] Request Headers:I0625 11:30:01.569927 13420 round_trippers.go:405] User-Agent:kubectl / v1 .6.6(linux / amd64)kubernetes / 7fa1c17 I0625 11:30:01.569934 13420 round_trippers.go:405] Accept:application / json, / I0625 11:30:01.599026 13420 round_trippers.go:420] Response Status:200 OK in 29毫秒I0625 11:30:01.599048 13420 round_trippers.go:423]响应标题:I0625 11:30:01.599056 13420 round_trippers.go:426]date:2017年6月25日星期日08:30:01 GMT I0625 11:30:01.599062 13420内容types:application / json I0625 11:30:01.599069 13420 round_trippers.go:426] Content-Length:2794 I0625 11:30:01.599264 13420 request.go:991] Response Body:{“kind “:” 波德”, “apiVersion”: “V1”, “元数据”:{ “名称”: “PS-剂2028336249-3pk43”, “generateName”: “PS-剂-2028336249 – ”, “命名空间”: “默认”, “selfLink”: “/ API / V1 /命名空间/默认/荚/ PS-剂2028336249-3pk43”, “UID”:“87c6907 2-597e-11e7-83cd-08002773375c “ ”resourceVersion“: ”14354“, ”creationTimestamp“: ”2017-06-25T08:16:03Z“, ”标签“:{ ”荚模板哈希“:” 2028336249 “ ”运行“: ”PS-剂“}, ”注释“:{ ”kubernetes.io/created-by“: ”{\“ 样\ ”:\“ SerializedReference \”,\ “apiVersion \”:\” V1 \”,\ “引用\”:{\ “之类的\”:\ “ReplicaSet \”,\ “命名空间\”:\ “默认\”,\ “名称\”:\ “PS-代理2028336249 \” ,\ “UID \”:\ “87c577b5-597e-11e7-83cd-08002773375c \”,\ “apiVersion \”:\ “扩展\”,\ “resourceVersion \”:\ “13446 \”}} \ n“个} “ownerReferences”:[{ “apiVersion”: “扩展/ v1beta1”, “种类”: “ReplicaSet”, “名称”: “PS-剂-2028336249”, “UID”:“87c577b5-597e-11e7-83cd- 08002773375c”, “控制器”:真实的, “blockOwnerDeletion”:真正}]}, “规格”:{ “卷”:[{ “Name”: “默认令牌bhvgz”, “秘密”:{ “secretName”: “默认令牌bhvgz”, “defaultMode”:420}}], “容器”:[{ “名称”: “PS-剂”, “图像”: “公顷/ PROD:PS-剂最新”,”资源 “:{},” volumeMounts “:[{” Name “:” 默认令牌bhvgz”, “readOnly的”:真实的, “装载path”: “/ var / run中/秘密/ kubernetes.io / serviceaccount”}] “terminatio nMessagePath “:” 的/ dev /终止日志 “ ”terminationMessagePolicy“: ”文件“, ”imagePullPolicy“: ”IfNotPresent“}], ”restartPolicy“: ”总是“, ”terminationGracePeriodSeconds“:30, ”dnsPolicy“:” ClusterFirst “ ”serviceAccountName“: ”默认“, ”serviceAccount“: ”默认“, ”节点名称“: ”minikube“, ”SecurityContext的“:{}, ”schedulerName“: ”默认调度“}, ”状态“:{”相 “:” 运行”, “条件”:[{ “types”: “初始化”, “状态”: “正确”, “lastProbeTime”:NULL, “lastTransitionTime”: “2017-06-25T08:16:03Z” },{ “types”: “准备好了”, “状态”: “假”, “lastProbeTime”:空, “lastTransitionTime”: “2017-06-25T08:16:03Z”, “原因”: “ContainersNotReady”,”消息“:”容器未准备状态:[ps-agent]“},{”type“:”PodScheduled“,”status“:”True“,”lastProbeTime“:null,”lastTransitionTime“:”2017-06-25T08 :16:03Z “}],” 主机IP “:” 192.168.99.100" , “podIP”: “172.17.0.5”, “开始时间”: “2017-06-25T08:16:03Z”, “containerStatuses”:[{ “name”:“ps-agent”,“state”:{“waiting”:{“reason”:“CrashLoopBackOff”,“message”:“back-off 5m0s重启失败容器= ps-agent p OD = PS-剂2028336249-3pk43_default(87c69072-597e-11e7-83cd-08002773375c) “}},” lastState “:{” 终止 “:{” EXITCODE “:0,” 理 “:” 已完成 “” startedAt “:NULL,” finishedAt “:” 2017-06-25T08:27:17Z”, “数据筒”: “搬运工:// 1aa9dfbfeb80042c6f4c8d04cabb3306ac1cd52963568e621019e2f1f0ee081b”}}, “就绪”:假 “RESTARTCOUNT”:7, “图像”: “HA / PROD:PS-剂最新”, “图像标识”: “搬运工:// SHA256:eb5307c4366fc129d022703625a5f30ff175b5e1a24dbe39fd4c32e726a0ee7b”, “数据筒”: “搬运工:// 1aa9dfbfeb80042c6f4c8d04cabb3306ac1cd52963568e621019e2f1f0ee081b”}], “qosClass”: “BestEffort”}} I0625 11:30:01.600727 13420 round_trippers.go:395] GET https://192.168.99.100:8443/api/v1/namespaces/default/pods/ps-agent-2028336249-3pk43/log?previous=true I0625 11:30 :01.600747 13420 round_trippers.go:402] Request Headers:I0625 11:30:01.600757 13420 round_trippers.go:405] Accept:application / json, / I0625 11:30:01.600766 13420 round_trippers.go:405] User-Agent:kubectl /v1.6.6(linux / amd64)kubernetes / 7fa1c17 I0625 11:30:01.632473 13 420 round_trippers.go:420]响应状态:在31毫秒中为200 OK I0625 11:30:01.632545 13420 round_trippers.go:423]响应标题:I0625 11:30:01.632569 13420 round_trippers.go:426]date: 2017 08:30:01 GMT I0625 11:30:01.632592 13420 round_trippers.go:426] Content-Type:text / plain I0625 11:30:01.632615 13420 round_trippers.go:426] Content-Length:0

一旦“启动”过程结束,docker容器就会退出。 我添加了一个永远运行的命令,它的工作。 这个问题在这里提到