zulip/docs/production
Tim Abbott 1219a2e854 docs: Deprecate support for Xenial and Stretch.
Also make sure our documentation for upgrading is reasonable for
Stretch => Buster.

Our reasoning for deprecating support for these releases is as follows:

* Ubuntu 16.04 Xenial reached desktop EOL last year; and will reach
  EOL on the server in about a year.

* Debian Stretch will each EOL in 2020 (the precise date is unclear in
  Debian's documentation, but based on past precedent it's in the next
  few months, perhaps July 2020).
  https://wiki.debian.org/DebianReleases#Production_Releases

* Both Ubuntu 16.04 and Debian Stretch use Python 3.5 as the system
  Python, which will reach EOL in September 2020 (and we're already
  seeing various third-party dependencies that we use drop support for
  them).

* While there is LTS support for these older releases, it's not clear it's
  going to be worth the added engineering effort for us to maintain EOL
  releases of the base OSes that we support.

* We (now) have clear upgrade instructions for moving to Debian Buster
  and Ubuntu 18.04.
2020-04-16 15:36:18 -07:00
..
authentication-methods.md docs: Updated links to python-social-auth docs. 2020-03-20 08:54:37 -04:00
deployment.md docs: Fix some typos in documentation (most of them found and fixed by codespell). 2020-03-17 05:57:10 -07:00
email-gateway.md docs: Fix typo in production/email-gateway.md. 2019-07-13 11:31:01 -07:00
email.md docs: Document EMAIL_USE_SSL for smtp providers on port 465. 2020-03-27 00:25:49 -07:00
expensive-migrations.md models: Add new UserMessage flag active_mobile_push_notification. 2018-08-01 16:51:56 -07:00
export-and-import.md help: Improve documentation on importing exported organizations. 2020-03-30 13:25:03 -07:00
index.rst docs: Split maintain-secure-upgrade into dedicated docs. 2019-11-22 10:21:20 -08:00
install-existing-server.md docs: Reduce the number of apparently broken links on github. 2019-10-07 12:08:27 -07:00
install.md docs: Add info about zulip-announce RSS feed to install docs. 2020-01-31 17:24:43 -08:00
maintain-secure-upgrade.md docs: Split maintain-secure-upgrade into dedicated docs. 2019-11-22 10:21:20 -08:00
management-commands.md docs: Replace links to Django 1.11 docs with 2.2 links. 2020-02-19 11:51:18 -08:00
mobile-push-notifications.md docs: Merge "Upgrading" with modifying-zulip. 2019-11-05 17:43:00 -08:00
multiple-organizations.md docs: Fix broken social authentication links. 2019-12-10 17:34:27 -08:00
password-strength.md docs: Convert many http URLs to https. 2020-03-26 21:35:32 -07:00
postgres.md docs: Add production documentation on deployment options. 2018-05-22 11:31:48 -07:00
requirements.md docs: Deprecate support for Xenial and Stretch. 2020-04-16 15:36:18 -07:00
security-model.md docs: Change our security contact to security@. 2020-02-26 16:35:29 -08:00
settings.md docs: Split maintain-secure-upgrade into dedicated docs. 2019-11-22 10:21:20 -08:00
ssl-certificates.md docs: Convert many http URLs to https. 2020-03-26 21:35:32 -07:00
troubleshooting.md bots: Remove FEEDBACK_BOT implementation. 2020-01-25 22:41:39 -08:00
upgrade-or-modify.md docs: Deprecate support for Xenial and Stretch. 2020-04-16 15:36:18 -07:00
upload-backends.md docs: Fix some typos in documentation (most of them found and fixed by codespell). 2020-03-17 05:57:10 -07:00