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产品介绍

PelicanDT(Pelican Distributed Test),是阿里云提供的一款 Linux 系统远程控制利器,是主要针对分布式应用提供的集成测试解决方案,用于帮助开发者简单、高效地测试分布式应用。

PelicanDT 具有以下特点:

  • 使用 Java 语言与 Linux 系统交互。
  • 本地控制 Linux 系统执行命令。
  • 通过简单的操作对应用注入异常来模拟测试环境。例如:应用停服、CPU 过高、内存过高、网络中断、网络流量延时等环境。

基于 PelicanDT 实现的Demo:

使用指南

https://help.aliyun.com/document_detail/102518.html

快速入门

安装PelicanDT SDK

  1. 将SDK添加到项目中
  2. 使用PelicanDT SDK有两种方式:
  • 下载SDK源码包,在下载中心下载最新版的JAVA SDK到本地,并import 到您的工作目录中。
  • 引入PelicanDT SDK依赖,通过maven二方库依赖的方式将PelicanDT的sdk加入到自己的项目中
    <dependency>
        <groupId>com.alibaba.pelican</groupId>
        <artifactId>PelicanDT</artifactId>
        <version>1.0.6</version>
    </dependency>
    
    

使用PelicanDT SDK

以下代码示例展示了使用PelicanDT SDK使用方式:

本地代码控制远程服务器执行命令:

  1. 创建并初始化RemoteCmdClient实例,RemoteCmdClient为远程服务器客户端。
  2. 填写远程服务器ip、userName、password信息
  3. 本地执行示例程序,向远程服务器执行pwd命令
        import com.alibaba.pelican.chaos.client.impl.RemoteCmdClient;
        import lombok.extern.slf4j.Slf4j;
        import org.junit.Test;
          
        /**
         * @author moyun@middleware
         */
        @Slf4j
        public class TestRemoteCmdClient {
          
            @Test
            public void testRemoteCmdClient() {
                //ECS可公网访问的IP
                String ip = "";
                //ECS用户名,一般为root
                String userName = "";
                //ECS登录密码
                String password = "";
          
                //创建并初始化RemoteCmdClient实例
                RemoteCmdClientConfig remoteCmdClientConfig = new RemoteCmdClientConfig();
                remoteCmdClientConfig.setIp(ip);
                remoteCmdClientConfig.setUserName(userName);
                remoteCmdClientConfig.setPassword(password);
                RemoteCmdClient client = new RemoteCmdClient(remoteCmdClientConfig);
                
                //执行pwd命令
                RemoteCmdResult resultInfo = client.execCmdWithPTY(new RemoteCmd("pwd"));
                log.info(resultInfo.getStdInfo());
            }
        }
    
    
    

预期结果

日志输出内容如下

[root@iz2ze0kv2rqck9wpheu5vxz ~]$pwd
root
[root@iz2ze0kv2rqck9wpheu5vxz ~]$export HISTFILE=/dev/null
[root@iz2ze0kv2rqck9wpheu5vxz ~]$exit
logout

通过第2行内容可以看出,命令执行默认目录/root/

如有疑问:请加钉钉

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