Problem: After a successful installation of OpenSearch on a Red Hat Enterprise Linux 8.9 system, attempts to start the service fail with the error message: “Could not initialize class com.sun.jna.Native.” Additionally, there is a warning indicating the inability to load JNA (Java Native Access) native support library, resulting in disabled native methods. Solution: The following […]
Data Analytics 12 May 2024 Troubleshooting Job Scheduling Issue in Apache AirflowProblem: A scheduled job did not trigger at its designated time, and upon attempting to run the job manually, the pods failed to come up in the backend. Reviewing the scheduler logs, the client did not find any specific errors. Process: Our expert investigated the following logs and data: Airflow Configuration: Relevant details of the […]
Data Analytics 26 Apr 2024 Understanding Label Usage in Prometheus AlertsProblem: The client has encountered an issue where a label, specifically “app_kubernetes_io_part_of”, is not being evaluated in the alert description or labels despite being present in the metric. They seek clarification on whether this behavior aligns with the expected functionality of Prometheus alerts. Process: The client provided a Prometheus rule with an alert definition that […]
Data Analytics 21 Apr 2024 Understanding Logstash Pipeline Configuration: Query and Schedule ParametersProblem: Need Explanation for the Pipeline: Our client has encountered a scenario in their Elasticsearch setup that requires clarification and understanding. The specific concern revolves around the configuration of the Logstash pipeline, more precisely, the interaction between the defined schedule and query parameters. Logstash Configuration LogstashConfig: pipelines.yml: | - pipeline.id: logstash-output-broker schedule: "*/5 * * […]
Data Analytics 19 Apr 2024 Resolving Kubernetes Deployment Error: Configmap Limit Exceeded for Prometheus Adapter in Azure EnvironmentProblem: The client encountered an error while updating the Prometheus adapter in the Azure environment, specifically related to the prometheus-adapter-configmap. The error stemmed from the generated configmap exceeding the Kubernetes limit, preventing successful deployment. The client sought guidance on efficiently splitting the configuration for deployment across multiple namespaces. Solution: Step 1: Environment Preparation: Experts established […]
Data Analytics 16 Apr 2024 Dag Factory Trigger Failure: Diagnosis and Resolution of Airflow Pod IssuesProblem: The client reported issues with all dags triggered from dag-factory failing, with associated problems such as pods not coming up when triggered and errors in collector pods. Furthermore, there was a lack of error messages in the airflow pods logs, making it challenging to identify the root cause. Process: In order to address the […]
Data Analytics 14 Apr 2024 Challenges in Prometheus Monitoring: Retention Setting Malfunction and Database CorruptionProblem: There are two problems with Prometheus monitoring setup: the retention setting isn’t functioning correctly, leading to excessive data storage, and the Prometheus database is frequently getting corrupted, despite varying levels of workload and resource allocation across different environments. Process: Case Details: Environment 1: Approximately 23GB of data is generated in Prometheus across a 3-hour […]
Data Analytics 13 Apr 2024 Resolving Kafka Stream Producer Fenced Exception During State Store Update in Migration from Kafka Streams 2.5.0 to 3.3.1Problem: During a migration from Kafka Streams 2.5.0 to 3.3.1, a client encounters a “Producer Fenced Exception” while processing aggregation tasks using a Processor in Kafka Streams. The issue occurs when attempting to update a State Store changelog topic, initiated by operations reading data from upstream and processing it with a punctuator. Process: Questions: Should […]
Data Analytics 12 Apr 2024 Integration Error: Prometheus-Adapter Not Listening on Port 6443Problem: The client encountered an error in the apiservice v1beta1.custom.metrics.k8s.io, with the status showing “False” and a message indicating that the service/prometheus-adapter in a specific namespace is not listening on port 6443. The client provided details, including the helm chart files used for deployment, seeking a resolution as the issue persisted across AWS and Azure […]
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