连接到远程节点

Question

我在远程计算机上,它上面有一个正在运行的Erlang VM节点.我正在尝试连接到Erlang VM节点,iex但收到错误:

$ iex --name testing@127.0.0.1 --remsh myapp@127.0.0.1 --setcookie NMFJGSU0FwvGKlrqMuGfY1I6LtgSz1Rn2PLiDnqMS54
Erlang/OTP 18 [erts-7.3.1] [source] [64-bit] [async-threads:10] [kernel-poll:false]

Could not contact remote node myapp@127.0.0.1, reason: :nodedown. Aborting...
$

epmd -names 报告Erlang VM节点正在运行:

$ epmd -names
epmd: up and running on port 4369 with data:
name myapp at port 45671
$ 

以下vm.args是已部署应用的内容:

-name myapp@127.0.0.1
-setcookie NMFJGSU0FwvGKlrqMuGfY1I6LtgSz1Rn2PLiDnqMS54=
-smp auto

问题:我做错了什么？

Answer 1

您需要将相同的cookie传递到iex作为一个在vm.args:

iex --name testing@127.0.0.1 --remsh myapp@127.0.0.1 --cookie NMFJGSU0FwvGKlrqMuGfY1I6LtgSz1Rn2PLiDnqMS54=

如果cookie不正确,您将收到:nodedown错误消息.

来自壳牌#1:

$ iex --cookie foo --name foo@127.0.0.1

来自壳牌#2:

$ iex --name bar@localhost --remsh foo@127.0.0.1
Erlang/OTP 19 [erts-8.1] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]

Could not contact remote node foo@127.0.0.1, reason: :nodedown. Aborting...
$ iex --name bar@localhost --remsh foo@127.0.0.1 --cookie foo
Erlang/OTP 19 [erts-8.1] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]

Interactive Elixir (1.3.4) - press Ctrl+C to exit (type h() ENTER for help)
iex(foo@127.0.0.1)1>