avahi-daemon Linux 服务在客户端机器上运行以执行基于网络的 Zeroconf 服务发现。
Avahi 是 Zeroconf 网络的 DNS 服务发现和多播 DNS 规范的实现。
用户应用程序使用 Linux D-Bus 消息传递接收发现的网络服务和资源的通知。
守护进程协调应用程序在缓存回复方面的工作，帮助最大限度地减少网络流量。

Avahi 提供了一组语言绑定，包括 Python 和 Mono。
由于其模块化架构，Avahi 已经集成到主要桌面组件中，例如 GNOME 的虚拟文件系统或者 KDE 的输入/输出架构。
有关更多规范，请参阅 http://avahi.org/。

avahi RPM 包提供了 /usr/sbin/avahi-daemon 守护进程及其配置文件。

配置avahi

下面是示例配置文件 /etc/avahi/avahi-daemon.conf：

# cat /etc/avahi/avahi-daemon.conf
# $Id: avahi-daemon.conf 1155 2006-02-22 22:54:56Z lennart $
#
# This file is part of avahi.
#
# avahi is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# avahi is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with avahi; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA.
# See avahi-daemon.conf(5) for more information on this configuration
# file!
[server]
#host-name=foo
#domain-name=local
browse-domains=0pointer.de, zeroconf.org
use-ipv4=yes
use-ipv6=yes
#check-response-ttl=no
#use-iff-running=no
#enable-dbus=yes
#disallow-other-stacks=no
#allow-point-to-point=no
[wide-area]
enable-wide-area=yes
[publish]
#disable-publishing=no
#disable-user-service-publishing=no
#add-service-cookie=yes
#publish-addresses=yes
#publish-hinfo=yes
#publish-workstation=yes
#publish-domain=yes
#publish-dns-servers=192.168.50.1, 192.168.50.2
#publish-resolv-conf-dns-servers=yes
[reflector]
#enable-reflector=no
#reflect-ipv=no
[rlimits]
#rlimit-as=
rlimit-core=0
rlimit-data=4194304
rlimit-fsize=0
rlimit-nofile=30
rlimit-stack=4194304
rlimit-nproc=3

服务控制

要按需管理 avahi-daemon 服务，请使用 service(8) 工具或者直接运行 /etc/init.d/avahi-daemon 脚本：

# service avahi-daemon 
Usage: /etc/init.d/avahi-daemon {start|stop|status|restart|condrestart}

# /etc/init.d/avahi-daemon 
Usage: /etc/init.d/avahi-daemon {start|stop|status|restart|condrestart}

可用的命令有：

要在启动时管理 avahi-daemon 服务，请使用 chkconfig 命令：

# chkconfig --list avahi-daemon
avahi-daemon 0:off 1:off 2:off 3:off 4:off 5:off 6:off

# chkconfig avahi-daemon on

# chkconfig --list avahi-daemon
avahi-daemon 0:off 1:off 2:on 3:on 4:on 5:on 6:off