[Mongrel] Problems monitoring Mongrel with F5 BigIP

Wayne E. Seguin wayneeseguin at gmail.com
Fri Aug 10 20:15:56 EDT 2007


On Aug 10, 2007, at 19:45 , Christopher Bailey wrote:
> As further info...  I've been working with F5 tech support on this,  
> and we're both stumped at the moment.  The same HTTP monitor works  
> fine with Nginx.  Both try to fetch the same HTML file.  Also, if I  
> am ssh'ed in to the F5, and do a telnet to one of the Mongrels and  
> do "GET /heartbeat.html HTTP/1.1", followed by two returns, this  
> works fine.  I use that same string (and two \n's) in my F5's send  
> string for it's HTTP monitor.  According to F5 who looked at our  
> tcpdump, the Mongrel just never responds (but in the same dump,  
> they see the direct telnet version respond fine).  The F5 makes a  
> direct TCP request to do this.

Christopher,

First thing to do is start the mongrels in debug mode and see if  
anything gets logged when "Mongrel just never responds".

   ~Wayne

s///g
Wayne E. Seguin
Sr. Systems Architect & Systems Administrator

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