Sage Weil
CEO at DreamHost Web Hosting
Madison, Wisconsin, United States
Summary
🤩
Rockstar🎓
Top School
Top expert inInfrastructure and Network Automation
Sage Weil is a veteran software leader and entrepreneur with 26 years of experience designing and shipping large-scale distributed storage systems, best known as the creator and longtime steward of Ceph. He combines deep systems research (PhD work at UC Santa Cruz) with hands-on engineering and DevOps, contributing core code, deployment tooling, containerization, and test infrastructure across Ceph, RocksDB, and related projects. As founder/CTO of Inktank and former Senior Distinguished Engineer at Red Hat, he has helped move Ceph from academic prototype to production-grade, Kubernetes-integrated storage used at scale. Currently CEO of Civic Media and co-founder of DreamHost, he blends product leadership, open-source stewardship, and civic-tech engagement (e.g., VoteAmerica). Beyond architecture and ops, his low-level work includes filesystem and kernel-facing improvements (Btrfs clone ranges, log/WAL optimizations) that reflect uncommon full-stack storage expertise. Based in Madison, Wisconsin, he champions open-source democracy and pragmatic, production-ready infrastructure.
26 years of coding experience
23 years of employment as a software developer
PhD, Computer Science, PhD, Computer Science at UC Santa CruzBS, Computer Science, BS, Computer Science at Harvey Mudd College
Github Skills (53)
kubernetes10
filesystem10
container10
c-language10
docker10
storage-engine10
btrfs10
python10
scripting10
testing10
rocksdb10
configuration-management10
databases10
linux10
bash10
Programming languages (13)
Github contributions (5)
ceph/ceph
Jun 2004 - Jan 2022
Ceph is a distributed object, block, and file storage platform
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:448 reviews, 39185 commits, 9620 PRs in 17 years 9 months
Contributions summary:Sage primarily worked on the Ceph storage platform, focusing on its integration with and management through Kubernetes. Their contributions included adding support for the Network File System (NFS) module, enhancing RGW export capabilities, and modifying the orchestrator to handle various aspects of storage class management. The user was also responsible for the addition of features such as automatic key rotation, and integrating the code with automated tools. Furthermore, they addressed various aspects related to the deployment and operation of Ceph daemons within a Kubernetes environment.
fusefile-storagecephstorageopenebs
ceph/ceph-deploy
Feb 2013 - Jul 2019
Deploy Ceph with minimal infrastructure, using just SSH access
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:41 commits, 21 PRs, 22 pushes in 6 years 6 months
Contributions summary:Sage primarily contributed to the `ceph-deploy` project by modifying and adding support for the `radosgw` package deployment. They enhanced the installation and uninstallation processes, incorporating systemd integration. Additionally, the user added support for specifying development commits via `--dev-commit` and the `--bluestore` flag, enhancing deployment flexibility. Furthermore, the user refactored and added mgr related features, which include a complete copy of the mds module, along with modifications to the file install.py
sshinfrastructureceph
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