pam_limits <root
PAM_LIMITS(8)                            Linux-PAM Manual                           PAM_LIMITS(8)

NAME
       pam_limits - PAM module to limit resources

SYNOPSIS
       pam_limits.so [conf=/path/to/limits.conf] [debug] [set_all] [utmp_early] [noaudit]

DESCRIPTION
       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.

OPTIONS
       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.

MODULE TYPES PROVIDED
       Only the session module type is provided.

RETURN VALUES
       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.

FILES
       /etc/security/limits.conf
           Default configuration file

EXAMPLES
       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.

SEE ALSO
       limits.conf(5), pam.d(5), pam(7).

AUTHORS
       pam_limits was initially written by Cristian Gafton 

Linux-PAM Manual                            09/19/2013                              PAM_LIMITS(8)

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