[英]Elixir: Set cookie and hostname for release created using mix escript.build
When running iex interactively, one can use 当以交互方式运行iex时,可以使用
iex --cookie <cookie> --name <hostname>
How do I set the same values for cookie
and name
when running an executable created using mix escript.build
? 运行使用mix escript.build
创建的可执行文件时,如何为cookie
和name
设置相同的值?
I figured out that I need to create a vm.args
file with the following contents 我想我需要创建一个vm.args
以下内容的vm.args
文件
## Name of the node
-name name@host
## Cookie for distributed erlang
-setcookie cookie
So I created a vm.args
file in the same directory as the executable file. 所以我在与可执行文件相同的目录中创建了一个vm.args
文件。 But when I print Node.self()
, I get :nonode@nohost
. 但是当我打印Node.self()
,我得到:nonode@nohost
。
So where do I store vm.args
so that it is read by the executable? 那么我在哪里存储vm.args
以便可执行文件读取它?
As far as I know, vm.args
is not read by escripts. 据我所知, vm.args
不是由escripts读取的。 You have (at least) 2 options: 你有(至少)2个选择:
Set these values in emu_args
key passed to escript
in project/0
in mix.exs
: 在emu_args
设置这些值,传递给escript
中project/0
中的mix.exs
:
def project do [app: :m, ..., escript: [main_module: M, emu_args: ["-name foo@bar -setcookie baz"]]] end
Parse the CLI arguments and set the values in your main
function: 解析CLI参数并在main
函数中设置值:
defmodule M do def main([name, cookie]) do Node.start String.to_atom(name) Node.set_cookie String.to_atom(cookie) IO.inspect {Node.self, Node.get_cookie} end end
$ mix escript.build $ ./m foo@bar baz {:foo@bar, :baz}
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