This page aims to keep information public about Sage's infrastructure. Question mark means that the information is not confirmed, please edit if you know more... and note the date of your update so that current and stale information can be distinguished.

Please mark which services still need to find a new home, with the system requirements and the deadline.

Current services

DNS

• registrant: was
• admin: was, schilly
• tech contact: was, schilly

ask.sagemath.org

• purpose: webserver where users can get support

• hosted at: LIPN (CS lab), University Paris North (Villetaneuse)

• contact: sage-askbot-admin@googlegroups.com

• url: https://ask.sagemath.org

• admin: tmonteil
• local sage dev: tmonteil
• technology used: unprivileged LXC, debian, nginx, uwsgi, postgesql, askbot
• issues : upgrade askbot to further versions is pretty painful (broken database migration scripts)

• formerly hosted at: Ohio State University (thanks !)

  • resources needed: database on a separate VM, 2GB RAM, 10GB disk
  • admin: niles, tmonteil
  • local tech contact: David Alden, Josh Carroll
  • technology used: ubuntu, nginx, uwsgi, postgesql, askbot
  • there are two machines : ask-sagemath and ask-sagemath-db

backup

• purpose: keep the data of various services in a separate place

• hosted at: Mathematics lab, Université Paris Sud (Orsay)

• technology used: debian, rsync, cron
• resources needed: 1TB disk
• admin: tmonteil, slelievre
• local sage dev: slelievre
• local tech contact: Mathilde Rousseau
• currently keeping a daily backup of :

  • https://ask.sagemath.org

  • https://wiki.sagemath.org

doc.sagemath.org, planet.sagemath.org, www.sagemath.org

• purpose: on-line browsable documentation + web homepage
• hosted at: github.io
• technology used: proprietary
• resources needed: 0 CPU, 0 RAM, 0 DISK
• admin: everyone who is on the github group for sagemath
• contact: schilly for the website

• url: https://doc.sagemath.org https://planet.sagemath.org https://www.sagemath.org

files.sagemath.org, fileserver.sagemath.org, old.files.sagemath.org

• purpose: main files, spkgs, and backup of "other" files

• what's at files.sagemath.org is exactly rsync.sagemath.org::sage

• old.files.sagemath.org has the old stable releases
• are the old development tarballs are still archived somewhere?
• hosted at: UW. Other places are the mirrors of it.
• contact: schilly, vbraun
• admin: ohanar?

• url: http://files.sagemath.org http://fileserver.sagemath.org http://old.files.sagemath.org

git.sagemath.org, trac.sagemath.org

• purpose: development tools, they share the same host
• hosted at: google ?
• technology used: ubuntu, apache, git, trac
• resources needed: ?CPU ?RAM ?DISK
• admin: people with root access: kclawson, ohanar, vbraun, mderickx, robertwb, wstein, dimpase
• contact: no real organisation yet, go to sage-devel

• url: https://git.sagemath.org https://trac.sagemath.org

GitHub organization for SageMath

• url: https://github.com/sagemath

• admin: schilly, vbraun

GitLab organization for SageMath

• url: https://gitlab.com/sagemath

• admin: embray, jrueth

build.sagemath.org

• purpose: distribute and gathers automatic binary building on volunteer's machines
• hosted at: University of Washington

• technology used: ubuntu, nginx; using using the continuous integration framework of http://buildbot.net/

• resources needed: ?CPU ?RAM ?DISK
• admin: ??
• contact: ??

• url: http://build.sagemath.org

patchbot.sagemath.org

• purpose: distribute and gathers automatic ticket testing on volunteer's machines

• hosted at: IRMA, Université de Strasbourg

• technology used: ubuntu, nginx, uwsgi, flask, mongodb, see patchbot for more details

• application source code: https://github.com/sagemath/sage-patchbot

• resources needed: Minimal CPU, RAM. ~50GB disk.
• admin: chapoton, tmonteil
• root access: chapoton, tmonteil
• contact: chapoton, tmonteil
• local sage dev: chapoton
• local tech contact: Alain Sartout

• url: https://patchbot.sagemath.org

rsync.sagemath.org

• purpose: the seed for mirrors, see MirrorNetwork for more details

• hosted at: University of Washington
• technology used: rsync
• resources needed:
  • CPU 1 core
  • RAM 2-3 GB (mostly for caching when calculating hashes)
  • DISK enough for all sage files (50+ GB)
• admin: schilly
• contact: schilly

• url: http://rsync.sagemath.org

sageb0t

• purpose: turn pull requests on GitHub into trac tickets

• contact: robertwb

sagecell.sagemath.org

• purpose: allow embedding sage computations within a webpage
• hosted at:

  • www.uni-frankfurt.de (Frankfurt, Germany)

  • Universidad Autónoma de Madrid (Madrid, Spain)

  • Google Compute Engine (Council Bluffs, Iowa, USA)
• technology used: production installation requires a dedicated server (either physical or virtual)
• resources needed:
  • RAM: 32GB recommended for smooth operation, 16GB may become enough in the future
  • CPU: the more the better for handling spikes in load and allowing parallel interacts, but any will do if necessary
  • DISK: must have BTRFS at least for /var/lib/lxc, SSD is preferable, 100GB should be sufficient for the foreseeable future
• admin: novoselt
• contact: novoselt

• available urls: http://aleph.sagemath.org, https://sagecell.sagemath.org

sagenb.org

• purpose: public notebook,

• state: end of life, replaced by CoCalc

• volunteers to provide worksheets back to the users: dimpase, tmonteil, vdelecroix

wiki.sagemath.org

• purpose: the wiki you are reading!

• hosted at: LIPN (CS lab), University Paris North (Villetaneuse)

• contact: sagemath-admins@googlegroups.com

• url: https://wiki.sagemath.org

• admin: tmonteil
• local sage dev: tmonteil
• technology used: unprivileged LXC, debian, nginx, certbot, uwsgi, moinmoin, jsmath, docutils
• formerly hosted at: cloud.google.com
• possible issue in migration: the database of user accounts is synced from trac when this latter is modified (incron)

zulip.sagemath.org

• purpose: chat system
• hosted at: cloud.google.com
• resources needed: a dedicated VM with 2-4GB of RAM
• admin: roed, jrueth (saraedum) - as of 2020-05.

DockerHub organization

• purpose: distribute SageMath Docker images

• hosted at: https://hub.docker.com/u/sagemath/

• admin: embray, jrueth
• other: slelievre also has push access