Case Studies

Problem: The client encountered a critical issue in their production environment involving HBase regions stuck in a transition state. This problem resulted in service disruptions within their Hadoop cluster. The issue was exacerbated by file system permission changes following a cold restart of the cluster, leading to difficulties in accessing data and managing HBase operations. […]

Problem: After performing a manual failover in PostgreSQL, the client encountered the following error when running a query on a partitioned table ‘ac1_control’: ERROR: could not access the status of transaction 613182547; DETAIL: Could not open file ‘pg_xact/0248’: No such file or directory. Despite restarting the PostgreSQL instance, the issue persisted. The client was operating […]

Problem: The client requested assistance with upgrading their Elasticsearch installation from version 7.15 to 7.17. The client sought a detailed step-by-step guide and expressed the need for a meeting to clarify the upgrade process. Process: Upon receiving the request, the expert requested additional details about the client’s current Elasticsearch setup, including information on the cluster, […]

Problem: The client experienced issues setting up a second node for high availability in their OpenSearch cluster. While the first node worked properly, the second node encountered SSL handshake errors when both nodes were used simultaneously. Process: The expert reviewed the client’s YML configurations and SSL certificate setups. They provided detailed feedback on correcting SSL […]

Problem: The client reported an issue and requested support to address potential vulnerabilities. A security issue was identified in an Apache Airflow instance, version 2.5.0, involving the absence of an account lockout mechanism. Solution: Our expert identified two key measures to enhance Airflow security and responded to the client’s request with the following recommendations: Implementing […]

Problem: The client reported an issue with the hard limit of 1MB for ConfigMap storage in Helm, which was causing problems with their deployment process. This limitation hindered their ability to store large configurations, necessitating a solution that could accommodate their growing data needs. Solution: To address the issue, the expert initiated an in-depth investigation. […]

Problem: The client faced an issue with Apache Cassandra where an error occurred while building indexes. The error message was: Unexpected error while building indexes: Could not find type for id: 12297. The client had also partially configured dual data centers, which added complexity to the problem. Process: Initial Identification: The expert determined that the […]

Problem: The client is using kube-prometheus-stack version 44.2.1 as their monitoring solution, and Twistlock scans have identified vulnerabilities in various packages including github.com/docker/distribution (CVE-2023-2253), golang.org/x/net (CVE-2022-41723), github.com/emicklei/go-restful/v3, and Go language with CVEs such as CVE-2021-29923, CVE-2021-38297, CVE-2021-39293, CVE-2021-41771, CVE-2021-41772, CVE-2021-44716, CVE-2022-23772, CVE-2022-23773, CVE-2022-23806, CVE-2022-24675, CVE-2022-24921, CVE-2022-27664, CVE-2022-28131, CVE-2022-28327, CVE-2022-2879, CVE-2022-2880, CVE-2022-30580, CVE-2022-30630, CVE-2022-30631, CVE-2022-30632, CVE-2022-30633, […]

Problem: The client requested a solution to automate the update process for the Helm/Kubernetes compatibility matrix. It’s crucial to address this issue because relying on manual updates causes delays in the adoption of Helm and results in the use of outdated Helm versions. The lack of automation results in incomplete release notes and repeated postponements, […]