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 7 May 2024 Installing MongoDB with Bitnami Helm Chart: Helm Chart Deployment, Load Balancing, TLS, Role-Based Access Control, Backup Strategies, Monitoring, and AuditingProblem: A leading organization in the tech sector sought to optimize their database infrastructure by deploying MongoDB with a focus on scalability, security, and reliability. They required comprehensive guidance on deployment, load balancing, TLS implementation, role-based access control (RBAC), backup strategies, monitoring, and auditing to ensure a seamless transition to a production-ready environment. The client […]
Database 6 May 2024 Enhancing MongoDB User Management: Active Directory/LDAP Integration via Percona MongoDB and Proxy SolutionsProblem: The client requires Active Directory/LDAP integration for MongoDB user management similar to the Enterprise edition of MongoDB. This includes managing user permissions, creation, and deletion. Solution: To address the reported requirements, several potential solutions were put forth. Resolution 1. Utilize Percona MongoDB with LDAP Support: Implement LDAP support through Percona MongoDB. Conducted a Proof […]
Database 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 25 Apr 2024 Clarification Needed: Understanding Cassandra Replication Factor (RF) in Multi-Data Center ConfigurationsProblem: The issue stems from confusion surrounding the Replication Factor (RF) in Apache Cassandra, where the documentation implies RF determines the quantity of data copies, but clarity on this matter is lacking. Process: To address this issue, in-depth investigation took place. The team explored the information provided by the client: Cassandra Configurations: Cassandra Version: 4.0.1 […]
Database 24 Apr 2024 Resolving PostgreSQL Replication Alert DiscrepanciesProblem: The system is generating alerts indicating replication lag on the “productCatalog” PostgreSQL instance, specifically targeting the machine “pa3fnd02.” However, upon DBA investigation, there is no observable lag in the cluster, with both the leader (pa3fnd02) and the sync standby (pa3fnd01) reporting no lag. The discrepancy raises concerns about the persistence of alerts despite the […]
Database 23 Apr 2024 Capturing Logout Events in Cassandra 4.0.x Audit LogsProblem: The organization is using Cassandra 4.0.x in its Production environment and requires tracking login and logout details from the Cassandra Audit logs. However, the Audit logs only record LOGIN_SUCCESS, LOGIN_ERROR, and UNAUTHORIZED_ATTEMPT events, with no mention of LOGOUT events. The organization seeks clarification on mechanisms for capturing logout-related entries. Solution: Cassandra does not inherently […]
Database 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