One Build For One Agent

Version 7 by Robin Shen
on Sep 18, 2011 13:51.

<< Changes from 6 to 7
compared with
Current by Robin Shen
on Sep 18, 2011 13:54.

 
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 h1. Situation
 Set up the build so that one agent runs only one build at a time. If all agents are occupied, the build should be waiting.
  
 h1. Demonstration
 # Check [grid tab|http://demo.pmease.com/grid/active_build_agents] on the demo site, and there are two agents available.
  # Check [grid tab|http://demo.pmease.com/grid/active_nodes] on the demo site, and there are two agents available.
 # Visit [the control project|http://demo.pmease.com/overview/100], and hit the run button to trigger all its children (project1, project2 and project3) concurrently.
 # Check the [queue tab|http://demo.pmease.com/queue]. Only two child builds will be running, each occupying one agent. The waiting child build will start to run when one of the running child builds finishes.
  
 h1. Resolution
 # Switch to [resources tab|http://demo.pmease.com/grid/resources] and a resource named "Agent" is defined with each agent providing one resource.
 # Check master step definition of [child project1|http://demo.pmease.com/settings/102/steps], [child project2|http://demo.pmease.com/settings/103/steps], and [child project3|http://demo.pmease.com/settings/104/steps]. They all set to run on node with resource _Agent_.
  
 {note}
 # If resource requirement of the master step is not satisfied, the build itself will be put into waiting state.
 #
 {note}
  # Check master step definition of [child project1|http://demo.pmease.com/settings/102/steps], [child project2|http://demo.pmease.com/settings/103/steps], and [child project3|http://demo.pmease.com/settings/104/steps]. They all set to run on node with resource _Agent_. If resource requirement of the master step is not satisfied, the build itself will be put into waiting state.