How to disable Security-Enhanced Linux (SELinux) in RHEL/CentOS/Debian/Ubuntu

SELinux Linux kernel module to support access control security policies. See Anatomy of Security-Enhanced Linux (SELinux). AppArmor is Canonical’s simpler alternative.

# temporarily
$ sudo sh -c 'echo 0 > /selinux/enforce' or sudo setenforce 0
$ sestatus or getenforce

# permanently
$ cat /etc/selinux/config
SELINUX=permissive (or disabled)
$ reboot

# from bootloader
$ cat /boot/grub/grub.conf
kernel /vmlinuz-2.6.18-238.9.1.el5 ro root=LABEL=/ selinux=0

from How to disable SELinux and howto turn off selinux


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