#zerconf

After installing the packages: nss-mdns, avahi, avahi-ui-tools ensure that the /etc/nsswitch.conf hosts line contains mdns4 (see the docs less /usr/share/doc/nss-mdns-0.10/README, or to whatever rpm -qd nss-mdns points.

Ensure that UDP/5353 is open in the firewall (per standard CentOS7/RHEL7 this is done using firewalld and its associated commands):

# check the name of the service from the available list $ sudo firewall-cmd --get-services | grep mdns # add the "mdns" service and set it to expire in 10 minues $ sudo firewall-cmd --add-service=mdns --timeout=10m # verify service port is now opened $ sudo firewall-cmd --list-services dhcpv6-client ssh mdns

Copy the SSH service from the sample in docs

cp /usr/share/doc/avahi-0.6.31/ssh.service /etc/avahi/services/ssh.service

Edit the avahi-daemon to give it a unique name

[server] host-name=ush-avahi-testname domain-name=local

Check the availability of the SSH service