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Local Connection Flood Causes Outage

Discussion in 'General Discussion' started by Solokron, Aug 25, 2013.

  1. Solokron

    Solokron Well-Known Member

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    Viewing both netstat and access logs I am seeing a flood of these connections on a server:

    Code:
    127.0.0.1 - - [25/Aug/2013:16:21:03 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:04 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:04 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:05 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:05 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:06 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:06 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:07 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:07 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:08 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:08 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:09 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:09 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:10 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:10 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:24 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:24 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:25 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:25 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:26 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:26 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:27 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:27 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:28 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:28 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:29 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:29 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:38 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:38 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:39 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:39 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:45 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:45 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:46 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:46 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:47 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:47 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:48 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:48 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:50 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:50 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:51 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:21:51 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:22:05 -0700] "OPTIONS * HTTP/1.0" 200 -
    127.0.0.1 - - [25/Aug/2013:16:22:05 -0700] "OPTIONS * HTTP/1.0" 200 -
    
    There are so many that it results in the network service going down and I need to be at the server and run a "service network restart" to bring the server back up. Sounds like it is running out of TCP ports. Any ideas on tracking down the root cause of this?
     
  2. Solokron

    Solokron Well-Known Member

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    Looks like it is just polling. I'll keep looking.
     
  3. cPanelMichael

    cPanelMichael Forums Analyst
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