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Alan_7431's avatar
Alan_7431
Icon for Nimbostratus rankNimbostratus
Jan 13, 2011

Hardware/software upgrade has broken some monitors

Last night we upgraded an LTM cluster on the 3400 chassis running 10.1 software to 6900 chassis running 10.2 software. The following customer HTTP monitor ceased functioning

 

 

Send string: GET / HTTP/1.0\r\nConnection: Close

 

 

Recieve string: HTTP/1.. (301|200|302|401)

 

 

Any ideas as to why it stopped working and how it can be fixed?

 

management
monitoring
  • Chris_Miller's avatar
    Chris_Miller
    Icon for Altostratus rankAltostratus
    Jan 13, 2011
    There were some changes from 10.1 to 10.2

     

     

    Here's some articles:

     

     

    https://support.f5.com/kb/en-us/solutions/public/10000/600/sol10655.html

     

     

    https://support.f5.com/kb/en-us/solutions/public/2000/100/sol2167.html

     

     

    If you're using 1.0, I don't believe Connection: Close would be necessary.

     

     

    From the second article, here's the recommended format on 10.1 and 10.2 if you're using HTTP 1.0

     

     

    10.1

     

    GET / HTTP/1.0\r\n

     

    10.2

     

    GET / HTTP/1.0\r\n\r\n
  • Alan_7431's avatar
    Alan_7431
    Icon for Nimbostratus rankNimbostratus
    Jan 13, 2011
    Thanks Chris,

     

     

    The link you posted to sol2167 provided the necessary info. The monitor began performing as expected just by adding \r\n\r\n to the end of the get string. Again, thanks for your reply.
  • Chris_Miller's avatar
    Chris_Miller
    Icon for Altostratus rankAltostratus
    Jan 13, 2011
    Posted By Alan on 01/13/2011 07:55 AM

     

    Thanks Chris,

     

     

    The link you posted to sol2167 provided the necessary info. The monitor began performing as expected just by adding \r\n\r\n to the end of the get string. Again, thanks for your reply.

     

    My pleasure.

     

     

    Oddly enough, if you go from certain versions, the software upgrade utility will automatically adjust your monitors. Sometimes that either doesn't happen or doesn't work properly.