18 lines
		
	
	
	
		
			625 B
		
	
	
	
		
			Text
		
	
	
	
	
	
		
		
			
		
	
	
			18 lines
		
	
	
	
		
			625 B
		
	
	
	
		
			Text
		
	
	
	
	
	
| 
								 | 
							
								Assume you want to configure stuff one host ("monitor node"),
							 | 
						||
| 
								 | 
							
								depending on the configuration of other hosts ("cluster nodes").
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								For instance, the monitor host would like to know,
							 | 
						||
| 
								 | 
							
								which hosts are configured with the provider
							 | 
						||
| 
								 | 
							
								"apache" and option --start true.
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								This requires the monitor node to be able to
							 | 
						||
| 
								 | 
							
								query all other configured nodes. It can't
							 | 
						||
| 
								 | 
							
								ask for all hosts, because cdist does not
							 | 
						||
| 
								 | 
							
								know which hosts are configured or may exist.
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								Example implementation
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								If cdist keeps ("caches") the configuration of every
							 | 
						||
| 
								 | 
							
								node it configures, each new node can query the
							 | 
						||
| 
								 | 
							
								cache for existing nodes that acquired the given
							 | 
						||
| 
								 | 
							
								configuration.
							 |