Kubernetes 无法在Pod中启动多个容器同步Pod时出错，正在跳过
我的Kubernetes 无法在Pod中启动多个容器同步Pod时出错，正在跳过,kubernetes,kubernetes-pod,Kubernetes,Kubernetes Pod,我的kubectl版本 Client Version: version.Info{Major:"1", Minor:"2", GitVersion:"v1.2.4", GitCommit:"3eed1e3be6848b877ff80a93da3785d9034d0a4f", GitTreeState:"clean"} Server Version: version.Info{Major:"1", Minor:"2", GitVersion:"v1.2.4", GitCommit:"3eed1e3
kubectl版本Client Version: version.Info{Major:"1", Minor:"2", GitVersion:"v1.2.4", GitCommit:"3eed1e3be6848b877ff80a93da3785d9034d0a4f", GitTreeState:"clean"}
Server Version: version.Info{Major:"1", Minor:"2", GitVersion:"v1.2.4", GitCommit:"3eed1e3be6848b877ff80a93da3785d9034d0a4f", GitTreeState:"clean"}
kubectl获得吊舱NAME READY STATUS RESTARTS AGE
redis-django 1/2 CrashLoopBackOff 9 22m
kubectl描述。在底部，我看到同步pod时出现错误，跳过错误
31m <invalid> 150 {kubelet 172.25.30.21} spec.containers{frontend} Warning BackOff Back-off restarting failed docker container
25m <invalid> 121 {kubelet 172.25.30.21} Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "frontend" with CrashLoopBackOff: "Back-off 5m0s restarting failed container=frontend pod=redis-django_default(9f35ffcd-391e-11e6-b160-0022195df673)"
前端
容器未启动。然后我将yaml文件更改为两个具有不同名称和端口的redis
容器。但是，结果是一样的（同步pod时出错，跳过）
后来我将yaml文件更改为，只有一个django
容器。此pod状态CrashLoopBackOff
和错误同步pod，跳过
更新-2
Itail-f/var/log/upstart/kublet.log
，它给出了相同的错误。Kubelet一直在尝试启动容器，但事实并非如此
I0623 12:15:13.943046 445 manager.go:2050] Back-off 5m0s restarting failed container=key-value-store pod=redis-django_default(94683d3c-392e-11e6-b160-0022195df673)
E0623 12:15:13.943100 445 pod_workers.go:138] Error syncing pod 94683d3c-392e-11e6-b160-0022195df673, skipping: failed to "StartContainer" for "key-value-store" with CrashLoopBackOff: "Back-off 5m0s restarting failed container=key-value-store pod=redis-django_default(94683d3c-392e-11e6-b160-0022195df673)"
更新-3
root@vm1:~/kubernetes/cluster/ubuntu/binaries# kubectl describe pod redis-django
Name: redis-django
Namespace: default
Node: 192.168.1.10/192.168.1.10
Start Time: Thu, 23 Jun 2016 22:58:03 -0700
Labels: app=web
Status: Running
IP: 172.16.20.2
Controllers: <none>
Containers:
key-value-store:
Container ID: docker://8dbdd6826c354243964f0306427082223d3da49bf2aaf30e15961ea00362fe42
Image: redis
Image ID: docker://sha256:4465e4bcad80b5b43cef0bace96a8ef0a55c0050be439c1fb0ecd64bc0b8cce4
Port: 6379/TCP
QoS Tier:
cpu: BestEffort
memory: BestEffort
State: Running
Started: Thu, 23 Jun 2016 22:58:10 -0700
Ready: True
Restart Count: 0
Environment Variables:
frontend:
Container ID: docker://9c89602739abe7331b3beb3a79e92a7cc42e2a7e40e11618413c8bcfd0afbc16
Image: django
Image ID: docker://sha256:0cb63b45e2b9a8de5763fc9c98b79c38b6217df718238251a21c8c4176fb3d68
Port: 8000/TCP
QoS Tier:
cpu: BestEffort
memory: BestEffort
State: Terminated
Reason: Completed
Exit Code: 0
Started: Thu, 23 Jun 2016 22:58:41 -0700
Finished: Thu, 23 Jun 2016 22:58:41 -0700
Last State: Terminated
Reason: Completed
Exit Code: 0
Started: Thu, 23 Jun 2016 22:58:22 -0700
Finished: Thu, 23 Jun 2016 22:58:22 -0700
Ready: False
Restart Count: 2
Environment Variables:
Conditions:
Type Status
Ready False
Volumes:
default-token-0oq7p:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-0oq7p
Events:
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
49s 49s 1 {default-scheduler } Normal Scheduled Successfully assigned redis-django to 192.168.1.10
48s 48s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Pulling pulling image "redis"
43s 43s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Pulled Successfully pulled image "redis"
43s 43s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Created Created container with docker id 8dbdd6826c35
42s 42s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Started Started container with docker id 8dbdd6826c35
37s 37s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Started Started container with docker id 3872ceae75d4
37s 37s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Created Created container with docker id 3872ceae75d4
30s 30s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Created Created container with docker id d97b99b6780c
30s 30s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Started Started container with docker id d97b99b6780c
29s 29s 1 {kubelet 192.168.1.10} Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "frontend" with CrashLoopBackOff: "Back-off 10s restarting failed container=frontend pod=redis-django_default(9d0a966a-39d0-11e6-9027-000c293d51ab)"
42s 16s 3 {kubelet 192.168.1.10} spec.containers{frontend} Normal Pulling pulling image "django"
11s 11s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Started Started container with docker id 9c89602739ab
38s 11s 3 {kubelet 192.168.1.10} spec.containers{frontend} Normal Pulled Successfully pulled image "django"
11s 11s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Created Created container with docker id 9c89602739ab
29s 10s 2 {kubelet 192.168.1.10} spec.containers{frontend} Warning BackOff Back-off restarting failed docker container
10s 10s 1 {kubelet 192.168.1.10} Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "frontend" with CrashLoopBackOff: "Back-off 20s restarting failed container=frontend pod=redis-django_default(9d0a966a-39d0-11e6-9027-000c293d51ab)"
啊……您的django容器在启动后自动退出，没有任何错误消息，这是意料之中的
django图像附带一个默认命令python3
。在不重写pod yaml文件中的命令/args的情况下，容器将立即退出
接下来的示例只是试图展示如何在一个pod中创建多个容器，但是这个示例并不现实，并且没有设置一个工作的应用程序。请随时提交github问题，以解决kubelet.log是否提供了任何线索？它应该在节点计算机的/var/log/下。只是检查了日志。在那里，它也显示了同样的错误。（你可以在我的问题UPDATE-2
）我也检查了我的笔记本电脑（Ubuntu-单节点Kubernetes）。在日志
和kubectl描述pod中获得相同的错误
：-（日志上说它在崩溃循环中。我认为这个消息已经重复了很多次，在第一个消息中它应该告诉原因。你能粘贴整个kubectl descripe
输出吗？正如@caesarxuchao提到的，kubectl descripe
的输出应该包括最后一个容器的终止原因。此外在此基础上，您可以使用kubectl logs-p-c
root@vm1:~/kubernetes/cluster/ubuntu/binaries# kubectl describe pod redis-django
Name: redis-django
Namespace: default
Node: 192.168.1.10/192.168.1.10
Start Time: Thu, 23 Jun 2016 22:58:03 -0700
Labels: app=web
Status: Running
IP: 172.16.20.2
Controllers: <none>
Containers:
key-value-store:
Container ID: docker://8dbdd6826c354243964f0306427082223d3da49bf2aaf30e15961ea00362fe42
Image: redis
Image ID: docker://sha256:4465e4bcad80b5b43cef0bace96a8ef0a55c0050be439c1fb0ecd64bc0b8cce4
Port: 6379/TCP
QoS Tier:
cpu: BestEffort
memory: BestEffort
State: Running
Started: Thu, 23 Jun 2016 22:58:10 -0700
Ready: True
Restart Count: 0
Environment Variables:
frontend:
Container ID: docker://9c89602739abe7331b3beb3a79e92a7cc42e2a7e40e11618413c8bcfd0afbc16
Image: django
Image ID: docker://sha256:0cb63b45e2b9a8de5763fc9c98b79c38b6217df718238251a21c8c4176fb3d68
Port: 8000/TCP
QoS Tier:
cpu: BestEffort
memory: BestEffort
State: Terminated
Reason: Completed
Exit Code: 0
Started: Thu, 23 Jun 2016 22:58:41 -0700
Finished: Thu, 23 Jun 2016 22:58:41 -0700
Last State: Terminated
Reason: Completed
Exit Code: 0
Started: Thu, 23 Jun 2016 22:58:22 -0700
Finished: Thu, 23 Jun 2016 22:58:22 -0700
Ready: False
Restart Count: 2
Environment Variables:
Conditions:
Type Status
Ready False
Volumes:
default-token-0oq7p:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-0oq7p
Events:
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
49s 49s 1 {default-scheduler } Normal Scheduled Successfully assigned redis-django to 192.168.1.10
48s 48s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Pulling pulling image "redis"
43s 43s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Pulled Successfully pulled image "redis"
43s 43s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Created Created container with docker id 8dbdd6826c35
42s 42s 1 {kubelet 192.168.1.10} spec.containers{key-value-store} Normal Started Started container with docker id 8dbdd6826c35
37s 37s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Started Started container with docker id 3872ceae75d4
37s 37s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Created Created container with docker id 3872ceae75d4
30s 30s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Created Created container with docker id d97b99b6780c
30s 30s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Started Started container with docker id d97b99b6780c
29s 29s 1 {kubelet 192.168.1.10} Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "frontend" with CrashLoopBackOff: "Back-off 10s restarting failed container=frontend pod=redis-django_default(9d0a966a-39d0-11e6-9027-000c293d51ab)"
42s 16s 3 {kubelet 192.168.1.10} spec.containers{frontend} Normal Pulling pulling image "django"
11s 11s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Started Started container with docker id 9c89602739ab
38s 11s 3 {kubelet 192.168.1.10} spec.containers{frontend} Normal Pulled Successfully pulled image "django"
11s 11s 1 {kubelet 192.168.1.10} spec.containers{frontend} Normal Created Created container with docker id 9c89602739ab
29s 10s 2 {kubelet 192.168.1.10} spec.containers{frontend} Warning BackOff Back-off restarting failed docker container
10s 10s 1 {kubelet 192.168.1.10} Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "frontend" with CrashLoopBackOff: "Back-off 20s restarting failed container=frontend pod=redis-django_default(9d0a966a-39d0-11e6-9027-000c293d51ab)"
root@vm1:~/kubernetes/cluster/ubuntu/binaries# kubectl logs redis-django -p -c frontend
root@vm1:~/kubernetes/cluster/ubuntu/binaries# kubectl logs redis-django -p -c key-value-store
Error from server: previous terminated container "key-value-store" in pod "redis-django" not found
root@vm1:~/kubernetes/cluster/ubuntu/binaries# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8dbdd6826c35 redis "docker-entrypoint.sh" 2 minutes ago Up 2 minutes k8s_key-value-store.f572c2d_redis-django_default_9d0a966a-39d0-11e6-9027-000c293d51ab_11101aea
8995bbf9f4f4 gcr.io/google_containers/pause:2.0 "/pause" 2 minutes ago Up 2 minutes k8s_POD.48e5231f_redis-django_default_9d0a966a-39d0-11e6-9027-000c293d51ab_c00025b0
root@vm1:~/kubernetes/cluster/ubuntu/binaries#