If you run load-balanced ColdFusion servers, it can often to difficult to determine which server a notification or error message originated from. There's a nice little Java trick to get around this.
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#Createobject('java','java.net.InetAddress').getLocalHost().getHostName()#
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We add this line to error notifications on our site so that we always know which physical machine the message came from. This makes it a little easier to diagnose a problem, determine if it is limited to one server, and know which log files to look at.
This is also great if your site is responding a bit slow and you want to know which server in the setup you are hitting from your machine. We set up a small script called whereami.cfm that simply displays the machine name.
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I often read your blog and always find it very interesting. Thought it was about time i let you know…Keep up the great work