emqx4.3/rel/config/examples/node.conf.example

## EMQX Node

## Note: all fields in this section are immutable after EMQX started, and most of the time you only need to modify the value for the name and cookie.
node {
    ## The actions triggered when the alarm is activated
    ## Type: Formatted String
    ##   Format: any_name@any_domain or an_name@any_ip
    ##   Note: Make sure the IP resolve from the domain is deterministic and unique and never change
    name = "emqx@127.0.0.1"

    ## Secret cookie is a random string that should be the same on all nodes in the cluster, but unique per EMQX cluster
    cookie = "Yzc0NGExM2Rj"

    ## Select a node role
    ## Possible values:
    ##   - core: This is a core node which provides durability of the client states, and takes care of writes
    ##   - replicant: This is a stateless worker node
    role = core

    ## Maximum number of simultaneously existing processes for this Erlang system
    process_limit = 2097152

    ## Maximum number of simultaneously open files and sockets for this Erlang system
    max_ports = 1048576

    ## Erlang's distribution buffer busy limit in kilobytes.
    ## Range from 1 to 2097152
    dist_buffer_size = 8192

    ## NOTE: keep this the same for all nodes in the cluster.
    ## Path to the persistent data directory.
    ## This config is pre-filled when the EMQX distribution package is built.
    ## You are advised to use the default value.
    data_dir = "data" # when running a zip package or in docker container
    #data_dir = "/var/lib/emqx" # when installed from deb/rpm packages

    ## Type: Periodic garbage collection interval
    global_gc_interval = 15m
}