Developed comprehensive upgrade documentation for Elasticsearch and Kibana within the hepapi/knowledge-hub repository, focusing on guiding users through a rolling upgrade process across multiple master nodes. The work included a detailed step-by-step guide outlining necessary precautions and rollout considerations, aimed at improving upgrade reliability and streamlining onboarding for developers and operators. Leveraging expertise in DevOps, Elasticsearch, and Kibana, the documentation was authored in Markdown and YAML to ensure clarity and accessibility. By introducing a dedicated documentation section for the upgrade process, the contribution enabled faster self-service upgrades and provided a reliable reference for ongoing maintenance and operational best practices.