Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

journald service docs: Add helpful comments about the journal getting full #85735

Merged
merged 1 commit into from
Apr 23, 2020
Merged

journald service docs: Add helpful comments about the journal getting full #85735

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 16 additions & 0 deletions nixos/modules/system/boot/systemd.nix
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -593,6 +593,9 @@ in
each other's limit. The value may be specified in the following
units: s, min, h, ms, us. To turn off any kind of rate limiting,
set either value to 0.

See <option>services.journald.rateLimitBurst</option> for important
considerations when setting this value.
'';
};

Expand All @@ -604,6 +607,19 @@ in
interval) that is applied to all messages generated on the system.
This rate limiting is applied per-service, so that two services
which log do not interfere with each other's limit.

Note that the effective rate limit is multiplied by a factor derived
from the available free disk space for the journal as described on
<link xlink:href="https://www.freedesktop.org/software/systemd/man/journald.conf.html">
journald.conf(5)</link>.

Note that the total amount of logs stored is limited by journald settings
such as <literal>SystemMaxUse</literal>, which defaults to a 4 GB cap.

It is thus recommended to compute what period of time that you will be
able to store logs for when an application logs at full burst rate.
With default settings for log lines that are 100 Bytes long, this can
amount to just a few hours.
'';
};

Expand Down