[tor-relays] Restarting Tor

[Tor Manager]

Greetings! Thanks for running your relays!

On Sunday, October 10, 2021 at 4:49:16 AM UTC-4 sysmanager7 via tor-relays 
wrote:

> Greetings All, I have three relays that are in need of an upgrade and 
> reboot.
> What is the best way to restart these relays without loosing flags or time?
>

We routinely reboot our nodes for kernel updates and retain the stable 
flag. High uptime is not something to brag about for a tor node, so don't 
worry about that.

If you're running a debian-based linux distro, you can have 
unattended-upgrades[0] do the work for you and warn you via email. There 
are tools that will allow for similar workflows for other OSes, eg. with 
dnf on rpm-based distros[1].

 

> Secondly how long can a relay be down before flags are dropped?
>

I don't know the upper bound, but twice I've migrated keys from an old 
piece of hardware to a new piece of hardware when the support warranty 
expired, and that node still has the stable flag. I took my time and did 
the migration carefully. It's far more important that you follow the 
advice[2] on how to keep your relay in good shape once it's up and running 
than that you find the limits of certain flags.

Cheers!
--
ibiblio Tor Manager

[0] https://wiki.debian.org/UnattendedUpgrades
[1] https://dnf.readthedocs.io/en/latest/automatic.html
[2] https://community.torproject.org/relay/setup/post-install/
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