Client Prerequisites for mDNS
If you choose to use the mDNS protocol when you set the cluster name, make sure that the configurations and prerequisites for resolving database endpoints are met on the client machines. If you have Active-Passive databases on the cluster, the configurations and prerequisites are also required for the Redis Enterprise Software (RS) nodes.
To prepare a client or node for mDNS:
Make sure that the clients and cluster nodes are on the same physical network or have the network infrastructure configured to allow multicasting between them.
Install these prerequisite packages:
apt-get install libnss-mdns
For RHEL/CentOS 6.x:
$ rpm -ivh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm $ yum install nss-mdns $ service avahi-daemon start
For RHEL/CentOS 7:
$ rpm -ivh https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-12.noarch.rpm $ yum install nss-mdns $ service avahi-daemon start
If you are using mDNS with IPv6 addresses, update the hosts line in
hosts: files mdns4_minimal \[NOTFOUND=return\] mdns