localhost - Rails logging 127.0.0.1 every 5 minutes -

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i have noticed in production rails log every 5 minutes, have request root url 127.0.0.1 apparently localhost.

started "/" 127.0.0.1 @ 2012-07-01 14:05:03 -0500   processing applicationcontroller#landing */* rendered shared/_header.html.erb (0.9ms) rendered shared/_footer.html.erb (0.5ms) rendered application/landing.html.erb (5.7ms) completed 200 ok in 8ms (views: 7.9ms)

i have never seen in other rails apps. using new relic, mongodb, nginx, , unicorn. can tell why happening or means?

this monitoring application, since it's checking root path successful connection (i.e. http 200). have installed tools such monit? hosting provider using? may monitor without knowing.


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