How to check if SELinux is in enforcing or permissive mode?
Jul 04, 2025 am 01:43 AMSELinux's current running mode can be viewed through the command line. Use the getenforce command to directly display the current status, and the output is Enforcing, Permissive or Disabled; view the /etc/selinux/config file to know the default startup mode; temporarily change the mode to setenforce 1 (enforcing) or setenforce 0 (permissive), but restore the configuration file settings after restart; in actual applications, you need to pay attention to service compatibility issues, and switch modes to troubleshoot problems if necessary.
SELinux has three main operating modes: enforcing, permissive and disabled. If you want to know which mode the system is currently in, the method is actually quite straightforward.
The easiest way is to use the command line tool. Enter:
getenforce
This command will directly tell you the current status of SELinux, and the output may be Enforcing, Permissive or Disabled.
If you need more detailed information or want to confirm the settings in the configuration file, you can continue to read the following content.
The complete way to view SELinux status
In addition to the getenforce
command, you can also view the /etc/selinux/config
file to understand the running mode at default startup. Open the file with a text editor:
cat /etc/selinux/config | grep SELINUX=
You will see a line similar to the following:
SELINUX=enforcing
This indicates the default state of SELinux after system restart. Note that this may be inconsistent with the current runtime state (such as temporarily switching mode).
How to temporarily change SELinux mode
If you just want to temporarily test the behavior in different modes, you can toggle it with the following command:
Switch to enforcing mode:
sudo setenforce 1
Switch to permissive mode:
sudo setenforce 0
It should be noted that this change will not persist and will be restored to the mode specified in the configuration file after restarting.
Some small details in practical applications
Some services or applications may be restricted in enforcing mode in SELinux, causing them to not function properly. At this time, you can first check whether SELinux is enforcing mode, and then decide whether to switch to permission to troubleshoot the problem.
In addition, if the graphical interface tool (such as
policycoreutils-gui
) is installed on the system, you can also set SELinux mode through the GUI tool, but most server environments still operate with command behavior.
Basically that's it. Checking the status is not complicated but it is easy to ignore, especially novices often forget to distinguish between runtime status and default values ??in configuration files.
The above is the detailed content of How to check if SELinux is in enforcing or permissive mode?. For more information, please follow other related articles on the PHP Chinese website!

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