那些遇到过的问题

Kubernetes Pod因CrashLoopBackOff失败

hai*_*ari 18 repository docker kubernetes kubectl

我正在遵循本指南,以便使用minikube设置pod并从托管在以下位置的私有存储库中提取映像:hub.docker.com

当试图设置一个pod来拉动图像时,我看到"CrashLoopBackoff"

pod配置:

apiVersion: v1
kind: Pod
metadata:
  name: private-reg
spec:
  containers:
    - name: private-reg-container
      image: ha/prod:latest
  imagePullSecrets:
    - name: regsecret
Run Code Online (Sandbox Code Playgroud)

"get pod"的输出

kubectl get pod private-reg
NAME          READY     STATUS             RESTARTS   AGE
private-reg   0/1       CrashLoopBackOff   5          4m
Run Code Online (Sandbox Code Playgroud)

据我所知,图像没有问题,如果我手动拉它们并运行它们,它们就可以工作了.

(你可以看到"成功拉图片"ha/prod:latest")

如果我将一般图像推送到诸如centos的存储库并尝试使用pod拉动并运行它,也会发生此问题.

此外,秘密似乎工作正常,我可以看到私人存储库中的"拉"计数.

这是命令的输出:

kubectl描述pods private-reg:

[~]$ 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)"
Run Code Online (Sandbox Code Playgroud)

这是命令的输出:

kubectl --v = 8 logs 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
Run Code Online (Sandbox Code Playgroud)

我该如何调试此问题？

  • 更新输出:

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

    I0625 11:30:01.569903 13420 round_trippers.go:395]获取I0625 11:30:01.569920 13420 round_trippers.go:402]请求标题:I0625 11:30:01.569927 13420 round_trippers.go:405]用户代理:kubectl/v1 .6.6(linux/amd64)kubernetes/7fa1c17 I0625 11:30:01.569934 13420 round_trippers.go:405]接受:application/json,/ I0625 11:30:01.599026 13420 round_trippers.go:420]响应状态:200 OK in 29毫秒I0625 11:30:01.599048 13420 round_trippers.go:423]回应标题:I0625 11:30:01.599056 13420 round_trippers.go:426]日期:2017年6月25日星期日08:30:01 GMT I0625 11:30:01.599062 13420 round_trippers.go:426] Content-Type: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, "装载路径": "/ 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":[{ "类型": "初始化", "状态": "正确", "lastProbeTime":NULL, "lastTransitionTime": "2017-06-25T08:16:03Z" },{ "类型": "准备好了", "状态": "假", "lastProbeTime":空, "lastTransitionTime": "2017-06-25T08:16:03Z", "原因": "ContainersNotReady","消息":"具有未准备状态的容器:[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重启失败的容器= 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]获取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]请求标题:I0625 11:30:01.600757 13420 round_trippers.go:405]接受: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:200 OK,31毫秒I0625 11:30:01.632545 13420 round_trippers.go:423]响应标题:I0625 11:30:01.632569 13420 round_trippers.go:426]日期:太阳,6月25日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

hai*_*ari 18

Docker容器导致的问题在"start"进程完成后立即退出.我添加了一个永远运行的命令,它工作正常.这个问题在这里提到

归档时间：

查看次数：

62904 次

最近记录：

6 年，3 月 前
如何在Kubernetes上运行容器？ 94
Kubernetes:如何调试CrashLoopBackOff 25
更多相关链接
相关归档
从边缘存储库添加高山软件包 15
如何在Docker中逐层拉层？ 13
在钥匙圈中未找到钥匙。无法验证令牌 10
docker-compose：使容器在子域下可用 6
就绪探针给出停止服务错误 5
使用 helm 将 prometheus 配置到 kubernetes 中的特定节点上 2
将主机/本地环境变量传递到 Kubectl 'exec' 命令 1
Kubernetes CentOS 8 tc 命令缺失影响 1
如何调试 GCP LoadBalancer 中的 502 错误 1
无需停机即可升级 Azure AKS 1
难疑归档
为什么处理排序数组比处理未排序数组更快？ 23665
"yield"关键字有什么作用？ 9664
不区分大小写'包含(字符串)' 2785
jQuery是否存在"存在"功能？ 2669
在JavaScript中创建多行字符串 2412
Git获取远程分支 2088
如何在Vim中进行不区分大小写的搜索 1579
UnicodeEncodeError:'ascii'编解码器无法对位置20中的字符u'\ xa0'进行编码:序数不在范围内(128) 1222
在Python中检查类型的规范方法是什么？ 1171
如何从"Bobby Tables"XKCD漫画中注入SQL？ 1070