The Cookie Protection System
Access to a
single node or set of nodes is secured by a cookie system. Each
node has a single cookie, and this cookie must be the same as
the cookies of any nodes to which the node talks. To ensure
this, all nodes in a distributed Erlang system must have
been started with the same magic cookie or have their cookie
changed to the same value by evaluating
erlang:set_cookie.
The set of connected nodes having the same cookie defines an Erlang cluster.
For two distributed Erlang nodes to communicate, they must have the same magic cookie. We can set the cookie in three ways.
Important: The cookie protection system was designed for building distributed systems that run on a local area network (LAN) where the LAN itself ...
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