Dinky Web: Fix For K8s Jobs Not Displaying In Operations Center

Aug 20, 2025 by Sebastian Müller 64 views

Bug: Dinky Web Operations Center Not Displaying Jobs Submitted to Kubernetes

Hey guys! We've got a situation here with the Dinky web interface where jobs submitted via the flink-kubernetes-operator aren't showing up in the Operations Center. Let's dive into the details and see what's going on.

The Issue: Jobs Not Displaying in Operations Center

The main problem we're facing is that when jobs are submitted through the flink-kubernetes-operator, they're not being displayed in the Dinky Operations Center. This can be a real headache because the Operations Center is where you'd typically go to monitor and manage your jobs. If they're not showing up, it's like flying blind!

Specifically, the jobs submitted via flink-kubernetes-operator cannot be displayed normally in the operations center. This means that after submitting a job through Kubernetes, users navigating to the Operations Center within the Dinky web interface will not see the expected job listings. This absence prevents users from monitoring the job's progress, checking its status, or managing its lifecycle through the Dinky UI. This issue significantly impacts the user experience and operational efficiency, as it requires users to resort to alternative methods for job management and monitoring, such as directly interacting with the Kubernetes cluster or using other monitoring tools. The discrepancy between submitting jobs through Kubernetes and their visibility in Dinky's Operations Center creates a disconnect in the workflow, making it harder to maintain a centralized overview of all running jobs. Furthermore, the inability to view these jobs within Dinky could lead to delays in identifying and resolving issues, as the Operations Center is designed to provide immediate insights into job performance and status. This problem is not just about convenience; it's about maintaining control and visibility over critical data processing tasks. Therefore, understanding and resolving this bug is crucial for ensuring the reliability and usability of Dinky in Kubernetes environments. The expected behavior is that any job submitted through the flink-kubernetes-operator should seamlessly appear in the Operations Center, allowing for consistent monitoring and management practices. The current lack of display not only hinders operational efficiency but also potentially introduces risks related to job oversight and timely intervention in case of failures or performance bottlenecks. This bug needs immediate attention to restore confidence in Dinky as a comprehensive job management solution.

Expected Behavior

Ideally, what we'd expect is that any job submitted via the flink-kubernetes-operator should show up in the Operations Center just like any other job. This would give us a single pane of glass to monitor everything, which is what we all want, right?

To clarify, the expected behavior is that Dinky's Operations Center should display all jobs submitted, regardless of the submission method. When a job is submitted via the flink-kubernetes-operator, it should be immediately visible in the Operations Center alongside jobs submitted through other methods. This unified view is crucial for efficient monitoring and management, allowing operators to quickly assess the status of all running jobs, troubleshoot issues, and manage resources effectively. The absence of jobs submitted through Kubernetes in the Operations Center disrupts this unified view, creating a fragmented operational experience. It forces users to switch between different tools and interfaces to get a complete picture of their job landscape, increasing the risk of overlooking critical issues or inefficiencies. Therefore, the expected behavior is not merely a matter of convenience; it is a fundamental requirement for maintaining operational control and ensuring the reliability of data processing workflows. This expectation aligns with the core value proposition of Dinky as a centralized platform for job management. Users rely on the Operations Center to provide real-time insights into job performance and status, enabling them to make informed decisions and take timely actions. When jobs submitted through the flink-kubernetes-operator are not displayed, it undermines this value proposition and creates a gap in the system's overall functionality. Addressing this issue is paramount to restoring user confidence and ensuring that Dinky continues to serve as a reliable and comprehensive solution for managing Flink jobs in Kubernetes environments. The Operations Center should act as the primary interface for all job-related activities, and any deviation from this expectation must be considered a critical bug that requires immediate resolution.

How to Reproduce the Issue

Here’s how you can reproduce this bug:

Submit a job via Kubernetes using the flink-kubernetes-operator.
Click on the Operations Center in the Dinky web interface.
Observe that the job you submitted is not displayed.

Let's break down the reproduction steps to ensure everyone can consistently replicate this issue. First, a job needs to be submitted to the Kubernetes cluster using the flink-kubernetes-operator. This typically involves creating a FlinkApplication custom resource definition (CRD) that defines the job's specifications, such as the Flink version, job JAR, parallelism, and resource requirements. Once the CRD is applied to the Kubernetes cluster, the flink-kubernetes-operator takes over and manages the deployment and execution of the Flink job. The second step involves accessing the Dinky web interface and navigating to the Operations Center. The Operations Center is a key component of Dinky, providing a centralized view of all Flink jobs managed by the platform. It displays information such as job status, start time, end time, and resource consumption. The critical observation, in this case, is the absence of the job that was submitted via the flink-kubernetes-operator. This discrepancy highlights a disconnect between the job submission mechanism and the monitoring capabilities within Dinky. The final step is to confirm that the submitted job does not appear in the list of running or completed jobs within the Operations Center. This can be verified by checking the job listings and filtering or searching for the specific job name or ID. If the job is not found, it confirms the bug where jobs submitted via the flink-kubernetes-operator are not being properly displayed in the Dinky Operations Center. Consistently reproducing this issue is essential for debugging and fixing the underlying problem, as it provides a clear and repeatable scenario for developers to investigate and test potential solutions. By following these steps, anyone can verify the bug and contribute to the effort of resolving it.

Version Information

We're seeing this issue on Dinky version 1.2.3.

Knowing the specific version information, such as Dinky version 1.2.3, is crucial for accurately diagnosing and resolving the bug where jobs submitted via the flink-kubernetes-operator are not displayed in the Operations Center. Version 1.2.3 provides a precise context for developers and maintainers to focus their efforts, as it allows them to examine the codebase and configuration specific to that release. This level of detail is essential because software bugs are often version-specific, meaning they may exist in one version of a software but not in others due to changes in the code or dependencies. By pinpointing the version, developers can avoid wasting time investigating issues that have already been addressed in later releases or that do not apply to the current environment. Furthermore, the version number helps in reproducing the bug consistently. When multiple users report similar issues on the same version, it increases the likelihood that the bug is widespread and requires immediate attention. It also enables developers to set up a testing environment that mirrors the user's setup, ensuring that any proposed fixes are effective in the specific context where the bug was encountered. In addition to the Dinky version, it may also be helpful to gather information about the versions of other related components, such as Flink, Kubernetes, and the flink-kubernetes-operator. This holistic view of the software stack can provide valuable insights into potential compatibility issues or conflicts that may be contributing to the problem. Therefore, accurately identifying and communicating the Dinky version is a fundamental step in the bug reporting and resolution process.

Contributing a Fix

While I'm not submitting a PR myself right now, the reporter indicated they might be willing to contribute a fix. That’s awesome! If you're up for it, dive in and let's get this sorted out.

The willingness to contribute a fix through a Pull Request (PR) is a significant step towards resolving the bug where jobs submitted via the flink-kubernetes-operator are not displayed in the Dinky Operations Center. When a community member expresses their intent to submit a PR, it indicates a proactive approach to problem-solving and a commitment to improving the Dinky platform. This willingness can expedite the bug resolution process, as it means that someone is ready to invest time and effort in developing and testing a potential fix. Submitting a PR is not just about providing a code solution; it also involves following the project's contribution guidelines, writing clear and concise code, and thoroughly testing the fix to ensure it addresses the issue without introducing new problems. The PR process allows for collaborative review and feedback from other developers and maintainers, which helps to ensure the quality and maintainability of the code. By opening a PR, the contributor provides a concrete starting point for discussion and collaboration, making it easier for the community to collectively work towards a solution. The fact that the reporter indicated a potential willingness to submit a PR is a positive sign for the project. It demonstrates the strength of the Dinky community and its commitment to addressing issues and enhancing the platform. If the contributor follows through with their offer, it is likely that the bug will be resolved more quickly and effectively. However, even if the contributor is unable to submit a PR, their initial willingness can serve as a catalyst for others to step up and contribute, further highlighting the collaborative nature of open-source development.

Code of Conduct

Just a reminder that everyone participating in this project agrees to follow the Code of Conduct. Let's keep things friendly and respectful!

Adherence to the Code of Conduct is a fundamental aspect of maintaining a healthy and collaborative environment within the Dinky project. The Code of Conduct, such as the one provided by the Apache Foundation, outlines the expected behavior of all contributors and participants in the community. It serves as a set of guidelines that promote respectful communication, inclusivity, and constructive engagement. By agreeing to follow the Code of Conduct, individuals commit to treating others with courtesy and consideration, avoiding personal attacks, and refraining from discriminatory or harassing behavior. The importance of the Code of Conduct cannot be overstated, as it directly impacts the overall culture and dynamics of the project. A well-enforced Code of Conduct fosters a welcoming atmosphere where individuals feel safe and encouraged to contribute their ideas and skills. It also helps to prevent conflicts and misunderstandings, ensuring that discussions remain focused on technical issues and solutions. In the context of the bug report regarding jobs not displaying in the Operations Center, the Code of Conduct is relevant in several ways. It ensures that discussions about the bug and potential fixes are conducted professionally and respectfully. It also encourages community members to provide constructive feedback and support to those who are working on the issue. Furthermore, the Code of Conduct promotes inclusivity, ensuring that all individuals, regardless of their background or experience level, feel welcome to participate in the project. By reminding everyone to adhere to the Code of Conduct, the bug report reinforces the commitment to creating a positive and productive environment for collaboration and innovation within the Dinky community.

Next Steps

Hopefully, this detailed bug report will help the Dinky team and community members get to the bottom of this issue. If you're experiencing the same thing, chime in! The more info we have, the better.