4.1.2 node_set_name() ¶

-type node_set_name() :: all |
                         up |
                         down |
                         connected |
                         disconnected |
                         term().

An arbitrary ID of a node set.

Predefined sets are:

all

names of all previously seen nodes that belong (or belonged, if the site is currently down) to the cluster members.

up

down

connected

there’s an Erlang distribution connection to the node hosting the site.

disconnected

there’s no Erlang distribution connection to the node hosting the site, but site is not considered down.