emqx4.3/rel/config/examples/cluster-with-dns.conf.example

## Cluster discovery via DNS resolution

cluster {
    ## Human-friendly name of the EMQX cluster.
    name = emqxcl

    ## Service discovery method for the cluster nodes
    discovery_strategy = dns

    ## If true, the node will try to heal network partitions automatically
    autoheal = true

    dns {
      ## The domain name from which to discover peer EMQX nodes' IP addresses
      name = localhost

      ## DNS record type
      ## Type: enum: a | srv
      record_type = a
     }
 }