[jira] [Created] (FLINK-30315) Add more information about image pull failures to the operator log

["Peter Vary (Jira)" <ji...@apache.org>]

Peter Vary created FLINK-30315:
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             Summary: Add more information about image pull failures to the operator log
                 Key: FLINK-30315
                 URL: https://issues.apache.org/jira/browse/FLINK-30315
             Project: Flink
          Issue Type: Improvement
          Components: Kubernetes Operator
            Reporter: Peter Vary


When there is an image pull error, this is what we see in the operator log:
{code:java}
org.apache.flink.kubernetes.operator.exception.DeploymentFailedException: Back-off pulling image "flink:1.14"
 	at org.apache.flink.kubernetes.operator.observer.deployment.AbstractFlinkDeploymentObserver.checkContainerBackoff(AbstractFlinkDeploymentObserver.java:194)
 	at org.apache.flink.kubernetes.operator.observer.deployment.AbstractFlinkDeploymentObserver.observeJmDeployment(AbstractFlinkDeploymentObserver.java:150)
 	at org.apache.flink.kubernetes.operator.observer.deployment.AbstractFlinkDeploymentObserver.observeInternal(AbstractFlinkDeploymentObserver.java:84)
 	at org.apache.flink.kubernetes.operator.observer.deployment.AbstractFlinkDeploymentObserver.observeInternal(AbstractFlinkDeploymentObserver.java:55)
 	at org.apache.flink.kubernetes.operator.observer.AbstractFlinkResourceObserver.observe(AbstractFlinkResourceObserver.java:56)
 	at org.apache.flink.kubernetes.operator.observer.AbstractFlinkResourceObserver.observe(AbstractFlinkResourceObserver.java:32)
 	at org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:113)
 	at org.apache.flink.kubernetes.operator.controller.FlinkDeploymentController.reconcile(FlinkDeploymentController.java:54)
 	at io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:136)
 	at io.javaoperatorsdk.operator.processing.Controller$1.execute(Controller.java:94)
 	at org.apache.flink.kubernetes.operator.metrics.OperatorJosdkMetrics.timeControllerExecution(OperatorJosdkMetrics.java:80)
 	at io.javaoperatorsdk.operator.processing.Controller.reconcile(Controller.java:93)
 	at io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.reconcileExecution(ReconciliationDispatcher.java:130)
 	at io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleReconcile(ReconciliationDispatcher.java:110)
 	at io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleDispatch(ReconciliationDispatcher.java:81)
 	at io.javaoperatorsdk.operator.processing.event.ReconciliationDispatcher.handleExecution(ReconciliationDispatcher.java:54)
 	at io.javaoperatorsdk.operator.processing.event.EventProcessor$ReconcilerExecutor.run(EventProcessor.java:406)
 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 	at java.base/java.lang.Thread.run(Unknown Source) {code}

This is the information we have on kubernetes side:
{code}
Normal   Scheduled  2m19s               default-scheduler  Successfully assigned
default/quickstart-base-86787586cd-lb7j6 to minikube
Warning  Failed     20s                 kubelet            Failed to pull image "flink:1.14": rpc error: code = Unknown desc = context deadline exceeded
*Warning  Failed     20s                 kubelet            Error*: ErrImagePull
Normal   BackOff    19s                 kubelet            Back-off pulling image "flink:1.14"
*Warning  Failed     19s                 kubelet            Error*: ImagePullBackOff
Normal   Pulling    7s (x2 over 2m19s)  kubelet            Pulling image "flink:1.14"
{code}

It would be good to add the additional message (in this case {{Failed to pull image "flink:1.14": rpc error: code = Unknown desc = context deadline exceeded}}) to the message of the {{DeploymentFailedException}} for tracebility.



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