[GitHub] [dolphinscheduler] rickchengx opened a new pull request, #12118: [Fix-12109] Fix the errors when starting 2 times with dolphinscheduler-daemon.sh

[GitBox]

rickchengx opened a new pull request, #12118:
URL: https://github.com/apache/dolphinscheduler/pull/12118

   
   
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   ## Purpose of the pull request
   
   close: #12109 
   
   If the user starts DS twice (or more) using `dolphinscheduler-daemon.sh`, 
the `pid` file will be overwritten, making it impossible to stop the initially 
started DS cluster.
   
   ## Brief change log
   
   * Use `pid` to check the status of the server
   * If the server is already started, cancel this launch
   
   ## Verify this pull request
   
   manually tested
   
   1. Start all the server and `ps -ef`as below
   <img width="896" alt="image" 
src="https://user-images.githubusercontent.com/38122586/191886250-332762be-0201-445f-a0cd-64d6176bad81.png";>
   
   2. Start all the server again
   
   <img width="896" alt="截屏2022-09-23 11 21 00" 
src="https://user-images.githubusercontent.com/38122586/191886323-5d037d5e-47a4-40cb-8477-8170f23aeb47.png";>
   
   3. the result of `ps -ef` is unchanged
   
   <img width="894" alt="image" 
src="https://user-images.githubusercontent.com/38122586/191886400-cd994978-a38b-464e-bb19-df9a74417c6e.png";>
   
   
   
   
   


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