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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | MODULE TYPES PROVIDED | RETURN VALUES | FILES | EXAMPLES | SEE ALSO | AUTHORS | COLOPHON |
PAM_LIMITS(8) Linux-PAM Manual PAM_LIMITS(8)
pam_limits - PAM module to limit resources
pam_limits.so [conf=/path/to/limits.conf] [debug] [set_all]
[utmp_early] [noaudit]
The pam_limits PAM module sets limits on the system resources that
can be obtained in a user-session. Users of uid=0 are affected by
this limits, too.
By default limits are taken from the /etc/security/limits.conf config
file. Then individual *.conf files from the /etc/security/limits.d/
directory are read. The files are parsed one after another in the
order of "C" locale. The effect of the individual files is the same
as if all the files were concatenated together in the order of
parsing. If a config file is explicitly specified with a module
option then the files in the above directory are not parsed.
The module must not be called by a multithreaded application.
If Linux PAM is compiled with audit support the module will report
when it denies access based on limit of maximum number of concurrent
login sessions.
conf=/path/to/limits.conf
Indicate an alternative limits.conf style configuration file to
override the default.
debug
Print debug information.
set_all
Set the limits for which no value is specified in the
configuration file to the one from the process with the PID 1.
utmp_early
Some broken applications actually allocate a utmp entry for the
user before the user is admitted to the system. If some of the
services you are configuring PAM for do this, you can selectively
use this module argument to compensate for this behavior and at
the same time maintain system-wide consistency with a single
limits.conf file.
noaudit
Do not report exceeded maximum logins count to the audit
subsystem.
Only the session module type is provided.
PAM_ABORT
Cannot get current limits.
PAM_IGNORE
No limits found for this user.
PAM_PERM_DENIED
New limits could not be set.
PAM_SERVICE_ERR
Cannot read config file.
PAM_SESSION_ERR
Error recovering account name.
PAM_SUCCESS
Limits were changed.
PAM_USER_UNKNOWN
The user is not known to the system.
/etc/security/limits.conf
Default configuration file
For the services you need resources limits (login for example) put a
the following line in /etc/pam.d/login as the last line for that
service (usually after the pam_unix session line):
#%PAM-1.0
#
# Resource limits imposed on login sessions via pam_limits
#
session required pam_limits.so
Replace "login" for each service you are using this module.
limits.conf(5), pam.d(5), pam(8).
pam_limits was initially written by Cristian Gafton
<gafton@redhat.com>
This page is part of the linux-pam (Pluggable Authentication Modules
for Linux) project. Information about the project can be found at
⟨http://www.linux-pam.org/⟩. If you have a bug report for this manual
page, see ⟨//www.linux-pam.org/⟩. This page was obtained from the
tarball Linux-PAM-1.3.0.tar.gz fetched from
⟨http://www.linux-pam.org/library/⟩ on 2017-07-05. If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
Linux-PAM Manual 04/01/2016 PAM_LIMITS(8)
Pages that refer to this page: limits.conf(5)