monitoring console takes too long to recognize that a server is offline
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                 Key: GERONIMO-4021
                 URL: https://issues.apache.org/jira/browse/GERONIMO-4021
             Project: Geronimo
          Issue Type: Improvement
      Security Level: public (Regular issues)
          Components: monitoring
            Reporter: Viet Hung Nguyen
            Assignee: Viet Hung Nguyen
             Fix For: 2.2


Whenever the monitoring plugin attempts to monitor a server that is 
offline/doesn't exist, it takes way too long to load the page. We need to 
reduce this timeout period.

I suggest that we add a parameter for the admin to set as the "timeout period" 
somewhere in the portlet. By default, we can choose to have this timeout 
parameter be set to 5000 milliseconds. 

We can use the InetAddress class to call isReachable(int timeout) to see if the 
server is online.

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