Documentation

pam_limits - Modify Linux PAM limits

New in version 2.0.

Synopsis

The pam_limits module modify PAM limits, default in /etc/security/limits.conf. For the full documentation, see man limits.conf(5).

Options

parameter required default choices comments
backup
 no no
  • yes
  • no
Create a backup file including the timestamp information so you can get the original file back if you somehow clobbered it incorrectly.
comment
 no
    Comment associated with the limit.
    dest
    		 no /etc/security/limits.conf
      Modify the limits.conf path.
      domain
      		 yes
        A username, @groupname, wildcard, uid/gid range.
        limit_item
        		 yes
        • core
        • data
        • fsize
        • memlock
        • nofile
        • rss
        • stack
        • cpu
        • nproc
        • as
        • maxlogins
        • maxsyslogins
        • priority
        • locks
        • sigpending
        • msgqueue
        • nice
        • rtprio
        • chroot
        The limit to be set
        limit_type
        		 yes
        • hard
        • soft
        • -
        Limit type, see man limits for an explanation
        use_max
        		 no no
        • yes
        • no
        If set to yes, the maximal value will be used or conserved. If the specified value is superior to the value in the file, file content is replaced with the new value, else content is not modified.
        use_min
        		 no no
        • yes
        • no
        If set to yes, the minimal value will be used or conserved. If the specified value is inferior to the value in the file, file content is replaced with the new value, else content is not modified.
        value
        		 yes
          The value of the limit.

          Examples

          # Add or modify nofile soft limit for the user joe
- pam_limits: domain=joe limit_type=soft limit_item=nofile value=64000

# Add or modify fsize hard limit for the user smith. Keep or set the maximal value.
- pam_limits: domain=smith limit_type=hard limit_item=fsize value=1000000 use_max=yes

# Add or modify memlock, both soft and hard, limit for the user james with a comment.
- pam_limits: domain=james limit_type=- limit_item=memlock value=unlimited comment="unlimited memory lock for james"

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