The shell node is supports remote calling, and get the remote command result code.
> 在 2020年5月13日，15:16，裴龙武 <peilon...@qq.com> 写道： > > Dear ALL： > > > Support Linux SSH Task 支持 Linux SSH 任务 > > 场景描述：当前项目中，工作流的任务的目标是执行不同服务器 Shell 脚本，Shell 脚本是保存在业务服务器的固定目录。当 Worker > 调度执行时，需要通过固定用户登录这些服务器，然后执行 Shell 脚本并获取这些任务执行的状态，其中服务器地址、用户名、密码可配置。 > > For example, in my project, the workflow's tasks want to execute shell > scripts where are in different server's different directory. When worker > execute these shell scripts, it must use the same user to login these server. > Also, the worker can get the executing state of these server. We can config > these server 's host,user and password. > > SSH Task is very useful for most user SSH 任务对大多数用户是非常有用的 > > 分布式调度任务所执行的 Shell 脚本是处于不同的业务服务器，都有其固定的业务，这些业务服务器不是 Worker，只是需要 Worker > 调度执行，我们只需要传递不同的参数，让服务器执行任务脚本即可。 > > In dolphinscheduler, the most executing tasks are in different servers who > are not workers. These servers also have their different fixed services. We > just have to pass different parameters to schedule these shell scripts to > execute. > > Python has a module to execute ssh script Python 有固定的工具包，可执行这些SSH Shell 脚本 > > Python 有一个可执行远程服务器SSH Shell脚本的模块，其名字为：paramiko。 > > Python has a module that can execute SSH Shell script. It's paramiko. > > Others 其他内容 > > 我发现之前的改进功能中也有关于这个的描述，不过相对简单。功能更新地址 > > I found this described in previous feature, but it was relatively simple. > Feature URL > > 另外，我通过 Shell Task 方式去执行远程任务会非常不便，下面是我的脚本，不知道是否有更好的方式。 > > In addition, it is very inconvenient for me to perform remote tasks through > Shell Task. Here is my script. I don't know if there's a better way. > sshpass -p 'password' ssh user@host echo 'ssh success' echo 'Hello World' > -> /home/dolphinscheduler/test/hello.txt echo 'end' > > > > Support dummy task like airflow 支持像 Airflow 中的虚拟任务 > > 场景描述：项目中，有已经产品化的 DAG 文件，DAG > 文件中包括不同的模块，这些模块之间的有些点是相互依赖的，有些不是，在用户购买不同模块时，需要把未购买模块且其他已购模块未依赖的点设置为 Dummy > Task，这样实际这些任务就不会执行，这样设置的好处是产品统一性和图的完整性，在AirFlow中，这些是通过DummyOperator完成的。 > > For example, in my project, it has a productized DAG file. The file contains > different modules, some of which are interdependent and some of which are > not. When customers purchase different modules, we need to set some tasks as > dummy tasks, which some modules are not purchased and the purchased module is > not dependent. Because of this setting, these dummy tasks are actually not > executed. The benefits of this setup are product unity and diagram integrity. > In airflow, these task execute by dummy operator. > > ** Realize 实现方式** > > Dummy Task 本身实现很简单，只是需要与其他任务配合使用，但任务执行方式设置为 dummy 时，实际的任务不执行，执行 Dummy Task。 > > Dummy Task is easy to realize, but it need to use with other different tasks. > When the task's executed type is set to dummy type, the task are executed as > a dummy task and the real task is not executed. > > > > > 顺带说一下，因为项目着急测试使用，我Fork了开发版本，实现两种任务类型。在后续的版本中是否能够支持。 > > By the way，I already realize these two features in my fork > branch. Whether the follow-up release can be supported
