The Avahi mDNS/DNS-SD daemon implements Apple's Zeroconf architecture (also known as "Rendezvous" or "Bonjour"). The daemon registers local IP addresses and static services using mDNS/DNS-SD and provides two IPC APIs for local programs to make use of the mDNS record cache the avahi-daemon maintains. First there is the so called "simple protocol" which is used exclusively by avahi-dnsconfd (a daemon which configures unicast DNS servers using server info published via mDNS) and nss-mdns (a libc NSS plugin, providing name resolution via mDNS). Finally there is the D-Bus interface which provides a rich object oriented interface to D-Bus enabled applications.
Upon startup avahi-daemon interprets its configuration file /etc/avahi/avahi-daemon.conf and reads XML fragments from /etc/avahi/services/*.service which may define static DNS-SD services. If you enable publish-resolv-conf-dns-servers in avahi-daemon.conf the file /etc/resolv.conf will be read, too.
/etc/avahi/avahi-daemon.conf: the default configuration file for avahi-daemon, avahi-daemon.conf(5) for more information.
/etc/avahi/hosts: additional static hostname mappings to publish in mDNS, see avahi.hosts(5) for more information.
/etc/avahi/services/*.service: static service definitions, see avahi.service(5) for more information.
SIGINT, SIGTERM: avahi-daemon will shutdown. (Same as --kill).
SIGHUP: avahi-daemon will reload unicast DNS server data from /etc/resolv.conf and static service definitions from /etc/avahi/services/. (Same as --reload)
SIGUSR1: avahi-daemon will dump local and remote cached resource record data to syslog.
The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/
avahi-daemon.conf(5), avahi.hosts(5), avahi.service(5), avahi-dnsconfd(8), avahi-set-host-name(1)
http://avahi.org/wiki/AvahiAndUnicastDotLocal documents the problems when using Avahi in a unicast DNS zone .local.
This man page was written using xml2man(1) by Oliver Kurth.