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[tor-project] new weekly maintenance window on Thursdays, 18:00UTC-21:00UTC



Hi!

Following an internal survey ([tpo/tpa/team#42782][]), TPA has just
adopted a weekly, three hour maintenance window starting at 18:00UTC
every Thursday, which is equivalent to:

- 10:00 US/Pacific
- 13:00 US/Eastern
- 15:00 America/Sao_Paulo
- 19:00 Europe/Amsterdam
- 21:00 Africa/Nairobi
- 07:00 Pacific/Auckland

... and, with daylight saving changes for places that observe it:

- 11:00 US/Pacific
- 14:00 US/Eastern
- 20:00 Europe/Amsterdam
- 06:00 Pacific/Auckland

[tpo/tpa/team#42782]: https://gitlab.torproject.org/tpo/tpa/team/-/work_items/42782

This is in addition to the already existing (but up to now undocumented)
daily maintenance window between 06:00 and 07:00 UTC when unattended
upgrades are already scheduled. 06:00 UTC is equivalent to:

- 22:00 US/Pacific
- 01:00 US/Eastern
- 03:00 America/Sao_Paulo
- 07:00 Europe/Amsterdam
- 09:00 Africa/Nairobi
- 19:00 Pacific/Auckland

... or, with daylight saving changes:

- 23:00 US/Pacific
- 02:00 US/Eastern
- 08:00 Europe/Amsterdam
- 18:00 Pacific/Auckland

Maintenance *MAY* be scheduled outside of maintenance windows in special
cases, including during nights and weekends.

As before, emergency outages are announced on IRC, in
`#tor-project`. Prolonged or planned outages are also be featured on the
<https://torprojectstatus.org/> site and by email to
`tor-project@xxxxxxxxxxxxxxxxxxxx`.

A new Nextcloud calendar ([TPA Maintenance Windows][]) can be used to
track the weekly maintenance windows.

[TPA Maintenance Windows]: https://nc.torproject.net/apps/calendar/p/RFADLmYC3nFrij3t

Future changes to the maintenance window times will be announced to this
mailing lists.

Details on the decision including reasoning, alternatives considered,
and maintenance windows examples are available in ADR 111:

https://gitlab.torproject.org/tpo/tpa/team/-/wikis/policy/0111-maintenance-windows

Feedback and comments are welcome by email or in:

https://gitlab.torproject.org/tpo/tpa/team/-/work_items/42782

Thank you for your attention!

a.

-- 
Antoine Beaupré
torproject.org system administration 

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