How to limit inter-node communication port range and interface

[polaris-alioth]

beam.smp will be all-zero listening by default. Binding 0.0.0.0 is equivalent to binding all IP addresses of the local host,
causing network-wide listening. It can be limited to a specific IP address using the RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS environment variable.

RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS="-kernel inet_dist_use_interface {127,0,0,1}"

{127,0,0,1} is a tuple represent the IPV4 address.
We can use parse_address(Address) to parses an IPv4 or IPv6 address string and returns an ip4_address() or ip6_address().

1> inet:parse_address("127.0.0.1").
{ok,{127,0,0,1}}
2> inet:parse_address("1050:0:0:0:5:600:300c:326b").
{ok,{4176,0,0,0,5,1536,12300,12907}}

[polaris-alioth]

@michaelklishin Can this tutorial be merged to this repository

[michaelklishin]

@polaris-alioth this is already covered in the Networking guide, including using much more convenient rabbitmq.conf options.

[michaelklishin]

Hm, perhaps it's the port part that has been covered but not the interface. I would rather first see this can realistically be supported in rabbitmq.conf than documenting any Erlang shell function calls.

[polaris-alioth]

Hm, perhaps it's the port part that has been covered but not the interface. I would rather first see this can realistically be supported in rabbitmq.conf than documenting any Erlang shell function calls.

Supported in rabbitmq.conf is much more conivenience. It also took me serval time to solve this problem. So I hope to spread this guide to all rabbitmq users