A clojure DSL for system admin and deployment with many remote machines

最新推荐文章于 2025-08-15 19:40:28 发布

weixin_34415923

最新推荐文章于 2025-08-15 19:40:28 发布

阅读量112

点赞数

CC 4.0 BY-SA版权

文章标签：运维 java 开发工具

原文链接：https://yq.aliyun.com/articles/85341

Clojure-Control 是一个轻量级的远程任务执行工具，仅依赖于 OpenSSH 和 Clojure，允许用户定义集群和任务，并在一台或多台远程机器上执行。通过简单的配置即可实现远程获取日期、文件复制等操作。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

update: Allow passing command line arguments to task now.

1.What is clojure-control?

    The idea came from node-control.
    Define clusters and tasks for system administration or code deployment, then execute them on one or many remote machines.
    Clojure-control depends only on OpenSSH and clojure on the local control machine.Remote machines simply need a standard sshd daemon.

2.Quick example

Get the current date from the two machines listed in the 'mycluster' config with a single command:

     (ns samples
     (:use [control.core :only [task cluster scp ssh begin]]))
     ;;define clusters
     (cluster :mycluster
                 :clients [
                               { :host " a.domain.com " :user " alogin " }
                               { :host " b.domain.com " :user " blogin " }
                             ])
     ;;define tasks
     (task :date " Get date "
              []
              (ssh " date " ))
    ;;start running
    (begin)

If saved in a file named "controls.clj",run with

java - cp clojure.jar:clojure - contrib.jar:control - 0.1 - SNAPSHOT.jar clojure.main controls.clj mycluster date

Each machine execute "date" command ,and the output form the remote machine is printed to the console.Exmaple console output

    Performing mycluster
    Performing date for a.domain.com
    a.domain.com:ssh: date
    a.domain.com:stdout: Sun Jul 24 19 : 14 : 09 CST 2011
    a.domain.com:exit: 0
    Performing date for b.domain.com
    b.domain.com:ssh: date
    b.domain.com:stdout: Sun Jul 24 19 : 14 : 09 CST 2011
    b.domain.com:exit: 0

Each line of output is labeled with the address of the machine the command was executed on. The actual command sent and the user used to send it is displayed. stdout and stderr output of the remote process is identified as well as the final exit code of the local ssh command.

3.How to scp files?
Let's define a new task named deploy