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Accepted
Tom Smykowski
Asked: 2010-05-12 07:40:36 +0800 CST

How to diagnose Internal Server error on Lighttpd?

  • 772

I have Lighttpd on Centos 5 with Fcgi and Memcached. Periodically, once per week or two i get internal server error 500 and i must manually restart lighttpd to get it to work again.

In my lighttpd config I've defined error log file:

server.errorlog             = "/home/lxadmin/httpd/lighttpd/error.log"

But when I open it, it has no rows for last days, only one month ago.

So my question is how to diagnose what is the issue and how to enable error log for my configuration?

logging fastcgi lighttpd

2 Answers

  1. Best Answer

    Edit:

    nano /etc/lighttpd/lighttpd.conf

    And put:

    fastcgi.debug = 1
    • 3

  2. My guess is that the problem is related with trouble connecting with the fcgi processes. Have you tried to strace lighttpd process when the internal server errors are happening? That should give you a clue of what's happening. Try something like this:

    strace -p `pidof lighttpd` -o strace.output

    then take a look at strace.output.

    Hope this helps.

    • 1