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Commit Graph

40 Commits

Author SHA1 Message Date
Lukáš Nykrýn
24dd31c19e core: add possibility to set action for ctrl-alt-del burst (#4105)
For some certification, it should not be possible to reboot the machine through ctrl-alt-delete. Currently we suggest our customers to mask the ctrl-alt-delete target, but that is obviously not enough.

Patching the keymaps to disable that is really not a way to go for them, because the settings need to be easily checked by some SCAP tools.
2016-10-06 21:08:21 -04:00
Lennart Poettering
79baeeb96d core: change TasksMax= default for system services to 15%
As it turns out 512 is max number of tasks per service is hit by too many
applications, hence let's bump it a bit, and make it relative to the system's
maximum number of PIDs. With this change the new default is 15%. At the
kernel's default pids_max value of 32768 this translates to 4915. At machined's
default TasksMax= setting of 16384 this translates to 2457.

Why 15%? Because it sounds like a round number and is close enough to 4096
which I was going for, i.e. an eight-fold increase over the old 512

Summary:

            | on the host | in a container
old default |         512 |           512
new default |        4915 |          2457
2016-07-22 15:33:13 +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
Karel Zak
91518d20dd core: support <soft:hard> ranges for RLIMIT options
The new parser supports:

 <value>       - specify both limits to the same value
 <soft:hard>   - specify both limits

the size or time specific suffixes are supported, for example

  LimitRTTIME=1sec
  LimitAS=4G:16G

The patch introduces parse_rlimit_range() and rlim type (size, sec,
usec, etc.) specific parsers. No code is duplicated now.

The patch also sync docs for DefaultLimitXXX= and LimitXXX=.

References: https://github.com/systemd/systemd/issues/1769
2015-11-25 12:03:32 +01:00
Lennart Poettering
9ded9cd14c core: enable TasksMax= for all services by default, and set it to 512
Also, enable TasksAccounting= for all services by default, too.

See:

http://lists.freedesktop.org/archives/systemd-devel/2015-November/035006.html
2015-11-16 11:57:48 +01:00
Lennart Poettering
0af20ea2ee core: add new DefaultTasksMax= setting for system.conf
This allows initializing the TasksMax= setting of all units by default
to some fixed value, instead of leaving it at infinity as before.
2015-11-13 19:50:52 +01:00
Karel Zak
412ea7a936 core: support IEC suffixes for RLIMIT stuff
Let's make things more user-friendly and support for example

  LimitAS=16G

rather than force users to always use LimitAS=16106127360.

The change is relevant for options:

  [Default]Limit{FSIZE,DATA,STACK,CORE,RSS,AS,MEMLOCK,MSGQUEUE}

The patch introduces config_parse_bytes_limit(), it's the same as
config_parse_limit() but uses parse_size() tu support the suffixes.

Addresses: https://github.com/systemd/systemd/issues/1772
2015-11-06 11:06:52 +01:00
Filipe Brandenburger
71b1c27a40 man: Update man page documentation for CPUAffinity
Document support for commas as a separator and possibility of specifying
ranges of CPU indices.

Tested by regenerating the manpages locally and reading them on man.
2015-10-27 17:56:26 -07:00
Lennart Poettering
b9e74c3994 core: rework crash handling
This introduces a new systemd.crash_reboot=1 kernel command line option
that triggers a reboot after crashing.

This also cleans up crash VT handling. Specifically, it cleans up the
configuration setting, to be between 1..63 or a boolean. This is to
replace the previous logic where "-1" meant disabled. We continue to
accept that setting, but only document the boolean syntax instead.

This also brings the documentation of the default settings in sync with
what actually happens.

The CrashChVT= configuration file setting is renamed to CrashChangeVT=,
following our usual logic of not abbreviating unnecessarily. The old
setting stays support for compat reasons.

Fixes #1300
2015-09-29 21:55:51 +02:00
Lennart Poettering
03a7b521e3 core: add support for the "pids" cgroup controller
This adds support for the new "pids" cgroup controller of 4.3 kernels.
It allows accounting the number of tasks in a cgroup and enforcing
limits on it.

This adds two new setting TasksAccounting= and TasksMax= to each unit,
as well as a gloabl option DefaultTasksAccounting=.

This also updated "cgtop" to optionally make use of the new
kernel-provided accounting.

systemctl has been updated to show the number of tasks for each service
if it is available.

This patch also adds correct support for undoing memory limits for units
using a MemoryLimit=infinity syntax. We do the same for TasksMax= now
and hence keep things in sync here.
2015-09-10 18:41:06 +02:00
Tom Gundersen
12b42c7667 man: revert dynamic paths for split-usr setups
This did not really work out as we had hoped. Trying to do this upstream
introduced several problems that probably makes it better suited as a
downstream patch after all. At any rate, it is not releaseable in the
current state, so we at least need to revert this before the release.

 * by adjusting the path to binaries, but not do the same thing to the
   search path we end up with inconsistent man-pages. Adjusting the search
   path too would be quite messy, and it is not at all obvious that this is
   worth the effort, but at any rate it would have to be done before we
   could ship this.

 * this means that distributed man-pages does not make sense as they depend
   on config options, and for better or worse we are still distributing
   man pages, so that is something that definitely needs sorting out before
   we could ship with this patch.

 * we have long held that split-usr is only minimally supported in order
   to boot, and something we hope will eventually go away. So before we start
   adding even more magic/effort in order to make this work nicely, we should
   probably question if it makes sense at all.
2015-06-18 19:47:44 +02:00
Filipe Brandenburger
681eb9cf2b man: generate configured paths in manpages
In particular, use /lib/systemd instead of /usr/lib/systemd in distributions
like Debian which still have not adopted a /usr merge setup.

Use XML entities from man/custom-entities.ent to replace configured paths while
doing XSLT processing of the original XML files. There was precedent of some
files (such as systemd.generator.xml) which were already using this approach.

This addresses most of the (manual) fixes from this patch:
http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/patches/Fix-paths-in-man-pages.patch?h=experimental-220

The idea of using generic XML entities was presented here:
http://lists.freedesktop.org/archives/systemd-devel/2015-May/032240.html

This patch solves almost all the issues, with the exception of:
- Path to /bin/mount and /bin/umount.
- Generic statements about preference of /lib over /etc.

These will be handled separately by follow up patches.

Tested:
- With default configure settings, ran "make install" to two separate
  directories and compared the output to confirm they matched exactly.
- Used a set of configure flags including $CONFFLAGS from Debian:
  http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/rules
  Installed the tree and confirmed the paths use /lib/systemd instead of
  /usr/lib/systemd and that no other unexpected differences exist.
- Confirmed that `make distcheck` still passes.
2015-05-28 19:28:19 +02:00
Lennart Poettering
f5a05fb578 man: document default timeouts and start limit parameters 2015-04-07 15:42:25 +02:00
Zbigniew Jędrzejewski-Szmek
3ba3a79df4 man: fix a bunch of links
All hail linkchecker!
2015-03-13 23:42:18 -04:00
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
Zbigniew Jędrzejewski-Szmek
b975b0d514 man: boilerplate unification 2015-02-10 23:24:27 -05:00
Zbigniew Jędrzejewski-Szmek
798d3a524e Reindent man pages to 2ch 2015-02-03 23:11:35 -05:00
Josh Triplett
1b907b5c3b core: Support system.conf.d and user.conf.d directories in the usual search paths 2014-11-29 13:55:31 -05:00
Lennart Poettering
fa1b91632c core: remove system start timeout logic again
The system start timeout as previously implemented would get confused by
long-running services that are included in the initial system startup
transaction for example by being cron-job-like long-running services
triggered immediately at boot. Such long-running jobs would be subject
to the default 15min timeout, esily triggering it.

Hence, remove this again. In a subsequent commit, introduce per-target
job timeouts instead, that allow us to control these timeouts more
finegrained.
2014-10-28 01:42:13 +01:00
Lennart Poettering
f07756bfe2 core: introduce "poweroff" as new failure action types
Also, change the default action on a system start-up timeout to powering off.
2014-08-22 18:10:31 +02:00
Lennart Poettering
2928b0a863 core: add support for a configurable system-wide start-up timeout
When this system-wide start-up timeout is hit we execute one of the
failure actions already implemented for services that fail.

This should not only be useful on embedded devices, but also on laptops
which have the power-button reachable when the lid is closed. This
devices, when in a backpack might get powered on by accident due to the
easily reachable power button. We want to make sure that the system
turns itself off if it starts up due this after a while.

When the system manages to fully start-up logind will suspend the
machine by default if the lid is closed. However, in some cases we don't
even get as far as logind, and the boot hangs much earlier, for example
because we ask for a LUKS password that nobody ever enters.

Yeah, this is a real-life problem on my Yoga 13, which has one of those
easily accessible power buttons, even if the device is closed.
2014-08-22 18:10:31 +02:00
Zbigniew Jędrzejewski-Szmek
5aded36978 man: add a mapping for external manpages
It is annoying when we have dead links on fd.o.

Add project='man-pages|die-net|archlinux' to <citerefentry>-ies.

In generated html, add external links to
http://man7.org/linux/man-pages/man, http://linux.die.net/man/,
https://www.archlinux.org/.

By default, pages in sections 2 and 4 go to man7, since Michael
Kerrisk is the autorative source on kernel related stuff.

The rest of links goes to linux.die.net, because they have the
manpages.

Except for the pacman stuff, since it seems to be only available from
archlinux.org.

Poor gummiboot gets no link, because gummitboot(8) ain't to be found
on the net. According to common wisdom, that would mean that it does
not exist. But I have seen Kay using it, so I know it does, and
deserves to be found. Can somebody be nice and put it up somewhere?
2014-07-07 18:36:55 -04:00
Lennart Poettering
9a05490933 cgroups: simplify CPUQuota= logic
Only accept cpu quota values in percentages, get rid of period
definition.

It's not clear whether the CFS period controllable per-cgroup even has a
future in the kernel, hence let's simplify all this, hardcode the period
to 100ms and only accept percentage based quota values.
2014-05-22 11:53:12 +09:00
Lennart Poettering
b2f8b02ec2 core: expose CFS CPU time quota as high-level unit properties 2014-04-25 13:27:25 +02:00
Lennart Poettering
bd8f585b99 core: add a setting to globally control the default for timer unit accuracy 2014-03-24 16:24:07 +01:00
Lennart Poettering
085afe36cb core: add global settings for enabling CPUAccounting=, MemoryAccounting=, BlockIOAccounting= for all units at once 2014-02-24 23:50:10 +01:00
Jan Engelhardt
66f756d437 doc: resolve missing/extraneous words or inappropriate forms
Issues fixed:
* missing words required by grammar
* duplicated or extraneous words
* inappropriate forms (e.g. singular/plural), and declinations
* orthographic misspellings
2014-02-17 19:03:07 -05:00
Jan Engelhardt
73e231abde doc: update punctuation
Resolve spotted issues related to missing or extraneous commas, dashes.
2014-02-17 19:03:07 -05:00
Lennart Poettering
d3b1c50833 core: add a system-wide SystemCallArchitectures= setting
This is useful to prohibit execution of non-native processes on systems,
for example 32bit binaries on 64bit systems, this lowering the attack
service on incorrect syscall and ioctl 32→64bit mappings.
2014-02-13 01:40:50 +01:00
Lukas Nykryn
3f41e1e595 manager: configurable StartLimit default values
https://bugzilla.redhat.com/show_bug.cgi?id=821723
2013-11-08 17:00:01 +01:00
Jan Engelhardt
63ba209d8b man: wording and grammar updates
This is a recurring submission and includes corrections to various
issue spotted: comma setting, missing words/preposition choice.
2013-11-07 01:23:54 -05:00
Oleksii Shevchuk
1f19a534ea Configurable Timeouts/Restarts default values
https://bugs.freedesktop.org/show_bug.cgi?id=71132

Patch adds DefaultTimeoutStartSec, DefaultTimeoutStopSec, DefaultRestartSec
configuration options to manager configuration file.
2013-11-05 19:57:22 +01:00
Lennart Poettering
7ac807320a core: drop some out-of-date references to cgroup settings 2013-09-26 22:57:43 +02:00
Jan Engelhardt
7964042405 man: wording and grammar updates
This is a recurring submission and includes corrections to various
issue spotted. I guess I can just skip over reporting ubiquitous
comma placement fixes…

Highligts in this particular commit:
- the "unsigned" type qualifier is completed to form a full type
  "unsigned int"
- alphabetic -> lexicographic (that way we automatically define how
  numbers get sorted)
2013-09-12 22:09:57 +02:00
Jason St. John
e9dd9f9547 man: improve grammar and word formatting in numerous man pages
Use proper grammar, word usage, adjective hyphenation, commas,
capitalization, spelling, etc.

To improve readability, some run-on sentences or sentence fragments were
revised.

[zj: remove the space from 'file name', 'host name', and 'time zone'.]
2013-07-02 23:06:22 -04:00
Lennart Poettering
78894537e0 man: fix example for DefaultEnvironment=
The example mentioned Environment= rather than DefaultEnvironment=.

Also made some other clean-ups.
2013-06-20 23:31:21 +02:00
Umut Tezduyar
97d0e5f83b manager: add DefaultEnvironment option
This complements existing functionality of setting variables
through 'systemctl set-environment', the kernel command line,
and through normal environment variables for systemd in session
mode.
2013-06-20 16:27:45 -04:00
Anatol Pomozov
ab06eef810 Fix spelling errors using 'codespell' tool 2013-04-15 08:40:05 -04:00
Lennart Poettering
3ae0c5e189 man: clarify how to configure default control group hierarchies for services and sessions 2013-02-27 15:00:26 +01:00
Zbigniew Jędrzejewski-Szmek
5f9cfd4c38 man: rename systemd.conf to systemd-system.conf
Alias as systemd-user.conf is also provided. This should help
users running systemd in session mode.

https://bugzilla.redhat.com/show_bug.cgi?id=690868
2013-02-13 09:48:32 -05:00