Limit Number Of System Logins
In the previous example, we see how we can limit the number of logins of the user group to the system. Now to limit the maximum number of logins to the whole system we can use maxsyslogins item. So to limit 50 maximum number of logins to the system use the following limit:
* - maxsyslogins 50
This limit is applied to the whole system and not for any specific user and group of users.
limits.conf File To Limit Users, Process In Linux With Examples
Linux gives full control over the system. In this article, we are going to learn about the file limits.conf. limits.conf is a configuration that is used to limit the resources to the user, groups. Now let’s understand the file structure of limits.conf and how can we use the limits.conf to limit resources to the user. Before moving further, note that to edit this file, you must have root permission.
The complete path of the limits.config is :
/etc/security/limits.conf
pam_module is a module that uses ulimit command to apply limits from limits.conf file.
The basic syntax of the limits.conf file is :
<domain><type><item><value>
Now let’s understand each field one by one