NGINX Access Logs

Server NGINX
1

Hi guys,

I’m new to nginx. Can anyone explain what does - - - “-” “-” “-” “-” -
means in the access logs? Been getting lots of this in the log file.
Would like to know if this is the cause of nginx to show that there’s a
spike in traffic through the nginx graph. Example of log below:

[12/Feb/2014:11:25:28 +0800] “POST /…svc HTTP/1.1” 200 274 1.68 870
0.008
0.002 192.168.10.71:84 - - - “-” “-” “-” “-” -

HTTP/1.1" 200 274 1.68 869 0.026 0.006 10.14.241.70:84 - - - “-” “-” “-”
“-”

Posted at Nginx Forum:

2

On Sat, 2015-01-10 at 09:50 -0500, exilemirror wrote:

HTTP/1.1" 200 274 1.68 869 0.026 0.006 10.14.241.70:84 - - - “-” “-” “-” “-”

Posted at Nginx Forum:
NGINX Access Logs

look in your nginx.conf. I have the following line

log_format main ‘$remote_addr - $remote_user [$time_local]
"$request
"’
'$status $body_bytes_sent “$http_referer” ’
‘“$http_user_agent” “$http_x_forwarded_for”’;

access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;

( sorry for the wrap )

Which itemises the fields. Obviously yours is different, but it’ll give
you the list.

Steve

Steve H. BSc(Hons) MIITP

Linkedin: http://www.linkedin.com/in/steveholdoway
Skype: sholdowa

3

nginx does not handle the TCP stack, which is part of the network layer
of
the OSI stack, underneath anything nginx does.
Have a look at your OS network stack monitoring tools.

Exhaustion of TCP sockets (or file descriptors) will lead to the
impossibility of opening new connections and might lead to some
erratic/strange behavior, looking at the application level.
nginx might give a specific error message… or not. Loads of reasons
might
be responsible of the impossibility of opening new connections.

Anyhow, use the proper tool to get the proper piece of information: that
is
a logic proven to be robust.

B. R.

4

Hi Steve,

Thanks for the reply. How do we determine if there’s an overload of tcp
connections via nginx?
Is it via this access logs?

Posted at Nginx Forum: