Syslog local0–local7

#linux
  • local0–local7 are custom (user-defined) syslog facilities.
  • They allow applications to send logs to a distinct syslog channel.
Configuration
  • rsyslog: /etc/rsyslog.conf or files under /etc/rsyslog.d/.
local2.*   /var/log/haproxy.log
  • to route local2 into a dedicated file.
Default Log Locations
  • Red Hat/CentOS/Rocky Linux:
    • By default, custom facility logs go to /var/log/messages unless otherwise configured.
  • Debian/Ubuntu:
    • By default, they go to /var/log/syslog unless otherwise configured.