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1. Look for refresh flag file
2. run nodeRefresh script
   1. kill instance
   2. take tomcat snapshot
   3. run copy-tomcat script
   4. run start script
   5. sleep 5
   6. if grep 'Startup...' text != 0 goto (this line -1)
3. run jmeter test script
   1. email results
4. if grep ERROR jmeter.log != 1 delete refresh flag file ; end
   1. restore tomcat snapshot

1. else
   1. set refresh flag file for child nodes
   ; end
2. delete refresh flag file