<!-- triage-serverless v3 PLEASE DO NOT REMOVE THIS SECTION --> *This page may contain information related to upcoming products, features and functionality. It is important to note that the information presented is for informational purposes only, so please do not rely on the information for purchasing or planning purposes. Just like with all projects, the items mentioned on the page are subject to change or delay, and the development, release, and timing of any products, features, or functionality remain at the sole discretion of GitLab Inc.* <!-- triage-serverless v3 PLEASE DO NOT REMOVE THIS SECTION --> This issue is only tracking requests to run the GitLab instance itself on s390x architecture. IBM has expressed interest in having GitLab run on their mainframe systems, specifically on the Z/OS and LoZ operating systems. This requirement stems from their customers wanting to have a SCM and CI/CD solution that runs entirely within the secure environment of their mainframe infrastructure. IBM attempted to run CE on z/OS but had issues such as Ruby package compilation. There has been customer feedback that running GitLab itself on Z/OS is not something they are interested in but they have adopted the Runner for this purpose - https://gitlab.com/gitlab-org/gitlab-runner/issues/3263 ### Updates September 14, 2021 - @rmarshall completed a [research spike](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/6281) for initial feasibility and laid out the path forward. - The next step is to workout GRPC on s390 architecture. ### Open questions * Does it need to be CE? Can it be Core so that we can provide an easier upgrade path for customers interested in a higher tier? * Is there still interest in running IBM on z/OS? - New epic specifically for Z/OS to be created.