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Commit Graph

22 Commits

Author SHA1 Message Date
Lennart Poettering
ec20fe5ffb journald: make maximum size of stream log lines configurable and bump it to 48K (#6838)
This adds a new setting LineMax= to journald.conf, and sets it by
default to 48K. When we convert stream-based stdout/stderr logging into
record-based log entries, read up to the specified amount of bytes
before forcing a line-break.

This also makes three related changes:

- When a NUL byte is read we'll not recognize this as alternative line
  break, instead of silently dropping everything after it. (see #4863)

- The reason for a line-break is now encoded in the log record, if it
  wasn't a plain newline. Specifically, we distuingish "nul",
  "line-max" and "eof", for line breaks due to NUL byte, due to the
  maximum line length as configured with LineMax= or due to end of
  stream. This data is stored in the new implicit _LINE_BREAK= field.
  It's not synthesized for plain \n line breaks.

- A randomized 128bit ID is assigned to each log stream.

With these three changes in place it's (mostly) possible to reconstruct
the original byte streams from log data, as (most) of the context of
the conversion from the byte stream to log records is saved now. (So,
the only bits we still drop are empty lines. Which might be something to
look into in a future change, and which is outside of the scope of this
work)

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=86465
See: #4863
Replaces: #4875
2017-09-22 10:22:24 +02:00
Lennart Poettering
f0367da7d1 core: rename StartLimitInterval= to StartLimitIntervalSec=
We generally follow the rule that for time settings we suffix the setting name
with "Sec" to indicate the default unit if none is specified. The only
exception was the rate limiting interval settings. Fix this, and keep the old
names for compatibility.

Do the same for journald's RateLimitInterval= setting
2016-04-29 16:27:48 +02:00
Lennart Poettering
8580d1f73d journal: rework vacuuming logic
Implement a maximum limit on number of journal files to keep around.
Enforcing a limit is useful on this since our performance when viewing
pays a heavy penalty for each journal file to interleve. This setting is
turned on now by default, and set to 100.

Also, actully implement what 348ced9097
promised: use whatever we find on disk at startup as lower bound on how
much disk space we can use. That commit introduced some provisions to
implement this, but actually never did.

This also adds "journalctl --vacuum-files=" to vacuum files on disk by
their number explicitly.
2015-10-02 23:21:59 +02:00
Zbigniew Jędrzejewski-Szmek
e93549ef29 Do not advertise .d snippets over main config file
For daemons which have a main configuration file, there's
little reason for the administrator to use configuration snippets.
They are useful for packagers which need to override settings, but
we shouldn't advertise that as the main way of configuring those
services.

https://bugs.freedesktop.org/show_bug.cgi?id=89397
2015-03-03 19:10:21 -05:00
Josh Triplett
a9edaeff84 journald: Support journald.conf.d directories in the usual search paths 2014-11-29 13:55:31 -05:00
Lennart Poettering
46b131574f journald: turn ForwardToSyslog= off by default
After all, rsyslog and friends nowadays read their data directly from
the journal, hence the forwarding is unnecessary in most cases.
2014-07-11 15:34:40 +02:00
Lennart Poettering
edc3797f7c journald: make SplitMode=uid the default
Now that we actually can distuingish system and normal users there's no
point in taking session information into account anymore when splitting
up logs.

This has the beenfit with that coredump information will actually end up
in each user's own journal.
2014-06-19 12:38:45 +02:00
Sebastian Thorarensen
40b71e89ba journald: add support for wall forwarding
This will let journald forward logs as messages sent to all logged in
users (like wall).

Two options are added:
 * ForwardToWall (default yes)
 * MaxLevelWall (default emerg)
'ForwardToWall' is overridable by kernel command line option
'systemd.journald.forward_to_wall'.

This is used to emulate the traditional syslogd behaviour of sending
emergency messages to all logged in users.
2014-03-14 22:05:25 +01:00
Lennart Poettering
7f1ad696a2 journald: bump the journal per-unit ratelimit defaults
Too many people kept hitting them, so let's increase the limits a bit.

https://bugzilla.redhat.com/show_bug.cgi?id=965803
2013-06-21 15:57:57 +02:00
Oleksii Shevchuk
26687bf8a9 journal: Add sync timer to journal server
Add option to force journal sync with fsync. Default timeout is 5min.
Interval configured via SyncIntervalSec option at journal.conf. Synced
journal files will be marked as OFFLINE.

Manual sync can be performed via sending SIGUSR1.
2013-03-25 17:51:06 +01:00
Lennart Poettering
6d9082172c journald.conf: remove MinSize= settings
There's no point in making this configurable, so let's drop it in order
to simplify configuration a bit.
2012-10-19 00:56:42 +02:00
Lennart Poettering
fb0951b02e journal: implement time-based rotation/vacuuming
This also enables time-based rotation (but not vacuuming) after 1month,
so that not more one month of journal is lost at a time per vacuuming.
2012-10-16 22:58:07 +02:00
Lennart Poettering
182b858fc2 journald: make splitting up of journal files per-user configurable 2012-09-07 23:40:00 +02:00
Lennart Poettering
eb53b74f7e journald: add new Seal= configuration option 2012-08-20 22:13:22 +02:00
Lennart Poettering
51abe64c85 journald: basic support for /dev/kmsg parsing 2012-08-09 15:57:24 +02:00
Lennart Poettering
f4bad2bd2a journal: default ImportKernel=no until we make use of structured logging 2012-07-03 14:07:10 +02:00
Lennart Poettering
77f6520a81 journal: move Storage=auto stanza to right file 2012-07-03 12:25:53 +02:00
Lennart Poettering
213ba152fd journal: allow setting of a cutoff log level for disk storage, syslog, kmsg, console forwarding 2012-06-01 17:27:16 +02:00
Lennart Poettering
0d9243f022 journal: support changing the console tty to forward to 2012-06-01 17:27:16 +02:00
Matthias Clasen
a4a58cb335 journald: refer to the correct man page
Fix the reference to the journald.conf man page in the
config file of the same name.
2012-05-27 15:22:25 +02:00
Lennart Poettering
5430f7f2bc relicense to LGPLv2.1 (with exceptions)
We finally got the OK from all contributors with non-trivial commits to
relicense systemd from GPL2+ to LGPL2.1+.

Some udev bits continue to be GPL2+ for now, but we are looking into
relicensing them too, to allow free copy/paste of all code within
systemd.

The bits that used to be MIT continue to be MIT.

The big benefit of the relicensing is that closed source code may now
link against libsystemd-login.so and friends.
2012-04-12 00:24:39 +02:00
Kay Sievers
18b754d345 rename /etc/systemd/systemd-{login,journal}d.conf to {login,journal}d.conf 2012-03-30 23:36:44 +02:00