Question

尝试从头开始测试Capistrano。

Capfile：

require 'capistrano/setup'
require 'capistrano/deploy'
I18n.enforce_available_locales = false
Dir.glob('lib/capistrano/tasks/*.rb').each { |r| import r }

deploy.rb：

role :testrole, 'x.x.x.x'
set :user, 'ubuntu'

test.rb任务：

namespace :test do
desc "Uptime on servers"
task :uptime do
  on roles(:testrole) do
    execute "uptime" 
  end
end
 end

cap命令：

cap production test:uptime

输出：

INFO [c077da7f] Running /usr/bin/env uptime on x.x.x.x
DEBUG [c077da7f] Command: /usr/bin/env uptime
cap aborted!
Net::SSH::AuthenticationFailed

使用相同的用户和密钥从shell登录时没有问题。登录远程服务器后，我可以在auth.log中看到执行上限时给出一个空用户：

test-srv sshd[1459]: Invalid user  from x.x.x.x

我想念什么？谢谢！

Answer 1

如果您查看项目cap install时提供的示例代码，您会在staging.rb和production.rb中看到类似内容：

# Simple Role Syntax
# ==================
# Supports bulk-adding hosts to roles, the primary
# server in each group is considered to be the first
# unless any hosts have the primary property set.
# Don't declare `role :all`, it's a meta role
role :app, %w{deploy@example.com}
role :web, %w{deploy@example.com}
role :db,  %w{deploy@example.com}

# Extended Server Syntax
# ======================
# This can be used to drop a more detailed server
# definition into the server list. The second argument
# something that quacks like a hash can be used to set
# extended properties on the server.
server 'example.com', user: 'deploy', roles: %w{web app}, my_property: :my_value

您要么在其中一个位置指定您的用户，要么使用fetch(:user)在运行时以编程方式获取它。如，

server 'example.com', user: fetch(:user), roles: %w{web app}, my_property: :my_value

Capistrano 3丢弃：执行远程SSH命令时的用户变量

1 个答案: