3.2. Security-enhanced Linux: grsecurity, SELinux The syslog-ng Premium Edition 7 Administrator Guide
Security-enhanced Linux solutions such as grsecurity or SELinux can interfere with the operation of syslog-ng PE. The syslog-ng PE application supports these security enhancements as follows:
grsecurity: Version syslog-ng PE 5 F2 and later can be run on hosts using grsecurity, with the following limitations: using the Oracle SQL source and destination is not supported.
SELinux: Version syslog-ng PE 5 F2 and later properly supports SELinux on Red Hat Enterprise Linux 6.5 and newer platforms. The CentOS platforms corresponding to the supported RHEL versions are supported as well. For details, see Procedure 3.5, Using syslog-ng PE on SELinux.