How to diagnose Internal Server error on Lighttpd?

Question

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?

score 3 · Accepted Answer · answered Jun 07 '10 at 10:55

3

Edit:

nano /etc/lighttpd/lighttpd.conf

And put:

fastcgi.debug = 1

answered Jun 07 '10 at 10:55

Tom Smykowski

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score 1 · Answer 2 · edited Sep 29 '17 at 07:24

1

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.

edited Sep 29 '17 at 07:24

kasperd

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answered May 11 '10 at 16:07

Marco Ramos

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And by the way, check if lighttpd has permissions to write to the error_log. Might be an issue as well. – Marco Ramos May 12 '10 at 10:37
How can I contact with you in private? – Tom Smykowski May 12 '10 at 13:34
@Tomaszs: direct message me on twitter (@mramos29) – Marco Ramos May 16 '10 at 23:34

How to diagnose Internal Server error on Lighttpd?

2 Answers2