SELinux
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Security-Enhanced_Linux/sect-Security-Enhanced_Linux-Working_with_SELinux-SELinux_Contexts_Labeling_Files.html
Désactiver
https://www.tecmint.com/disable-selinux-temporarily-permanently-in-centos-rhel-fedora/