helloworld.java:
import java.util.*;
public class helloworld {
public static void main(String[] a)
{
int index;
Scanner scan = new Scanner(System.in);
for(index=0;index<20;index++)
System.out.println("helloworldt"+(index+1));
}
}
Dockerfile.file：
FROM openjdk:7
LABEL maintainer="Arun kumar"
COPY . /usr/src/myapp
WORKDIR /usr/src/myapp
RUN javac helloworld.java
CMD ["java", "helloworld"]
这将准备一个docker映像，然后我可以使用以下命令创建该映像(在文件所在的存储库中(：docker built -t javaprogram .
然后我使用以下命令运行此图像：docker run -it -d javaprogram
然后我使用以下命令创建容器的副本：docker commit containerId arunkumarduraisamy66/javacontprogram
然后，我使用以下命令以公共模式将图像推送到我的docker hub存储库：docker push arunkumarduraisamy66/javacontprogram
然后我启动MiniKube：minikube start
然后我尝试使用以下命令创建一个容器：kubectl create deployment javakubedeployment --image=arunkumarduraisamy66/javacontprogram
它给出以下错误：ErrImagePull
我不知道如何解决这个问题。
C:UsersthulaDocumentskubernetes and dockerdocker javahelloworld> kubectl describe pod javaprogram-64b48854-ns7jp
Name: javaprogram-64b48854-ns7jp
Namespace: default
Priority: 0
Node: minikube/192.168.49.2
Start Time: Wed, 30 Dec 2020 09:04:42 +0530
Labels: app=javaprogram
pod-template-hash=64b48854
Annotations: <none>
Status: Running
IP: 172.17.0.3
IPs:
IP: 172.17.0.3
Controlled By: ReplicaSet/javaprogram-64b48854
Containers:
javacontprogram:
Container ID: docker://8cb0722bde94704a3dfbec2514958c1cea88bd0f5df0afb2678292835c4f871e
Image: arunkumarduraisamy66/javacontprogram
Image ID: docker-pullable://arunkumarduraisamy66/javacontprogram@sha256:fe00f09ebc6a6bc651343a807b1adf9e48b62596ddf9424abc11ef3c6f713291
Port: <none>
Host Port: <none>
State: Terminated
Reason: Error
Exit Code: 1
Started: Wed, 30 Dec 2020 09:05:50 +0530
Finished: Wed, 30 Dec 2020 09:05:51 +0530
Last State: Terminated
Reason: Error
Exit Code: 1
Started: Wed, 30 Dec 2020 09:05:16 +0530
Finished: Wed, 30 Dec 2020 09:05:17 +0530
Ready: False
Restart Count: 3
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-bs9b6 (ro)
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
default-token-bs9b6:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-bs9b6
Optional: false
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 79s default-scheduler Successfully assigned default/javaprogram-64b48854-ns7jp to minikube
Normal Pulled 74s kubelet Successfully pulled image "arunkumarduraisamy66/javacontprogram" in 3.4663937s
Normal Pulled 68s kubelet Successfully pulled image "arunkumarduraisamy66/javacontprogram" in 3.5957121s
Normal Pulled 46s kubelet Successfully pulled image "arunkumarduraisamy66/javacontprogram" in 3.8325583s
Normal Pulling 16s (x4 over 77s) kubelet Pulling image "arunkumarduraisamy66/javacontprogram"
Normal Pulled 13s kubelet Successfully pulled image "arunkumarduraisamy66/javacontprogram" in 3.5564947s
Normal Created 12s (x4 over 74s) kubelet Created container javacontprogram
Normal Started 12s (x4 over 73s) kubelet Started container javacontprogram
Warning BackOff 10s (x5 over 66s) kubelet Back-off restarting failed container
我已经重新创建了您的应用程序的映像，正如@mmking在评论中提到的，它被终止了，因为pod已经完成了它的任务。当你检查pod的日志时，你可以看到它已经正确运行并打印了helloworld20次，然后被终止，因为这个pod没有其他事情可做：
$kubectl logs javakubedeployment-7bcfb44b74-8b5zz
helloworld 1
helloworld 2
helloworld 3
[...]
helloworld 19
helloworld 20
要保持pod运行，您可以在其中添加简单的sleep命令。