Red Hat DIRECTORY SERVER 2.0 - GATEWAY Manual de usuario descargar pdf (Pagina 93)

Appendix B. Reference information for logging

Table B-1. Escape sequences for custom logs

%% How to get “%” in the log line. Why would you want to?

%a Client IP address

%A Server IP address. Recall that you may be running different virtual

hosts on different IP addresses.

%B Number of data bytes sent back. (i.e. excluding headers)

%b As for %B except that if the number is 0 then “-” is inserted

instead.

%{fubar}C The value of cookie fubar.

%D The number of microseconds it took to serve the query. See %T

below for a less accurate representation.

%{fubar}e The value of environment variable fubar when the query was

processed.

%f The name of the ﬁle whose contents were ultimately served back

to the client.

%H The request protocol. (Typically HTTP or HTTPS.)

%{fubar}i Value of the fubar header on the input query. See also %o below.

%l The remote userid, if provided by RFCnnnn.

%m The request method. Typically “GET” for our queries, but

occasionally “HEAD” if the browser is smart. It may be “POST”

for some CGI programs uploading data.

%{fubar}n A record of a “note” passed from one module to another. Not of

interest at our level.

%{fubar}o The value of header fubar in the outgoingt reponse headers. See

also %i above.

%p The port number of the server. Typically 80.

%P The process ID of the child that serviced the query. Typically only

of use for debugging and trouble-shooting.

%q The query string component of the URL.

%r The ﬁrst line of the query.

%>s The status code passed back to the client.

%t The time of the request in standard format.

%{format}t The time of the query in the format speciﬁed. See the manual page

for strftime for details of the format.

%T The time taken to service the query in seconds. See %D above for

more accuracy.

%u The userid used to authenticate to this page, if necessary.

%U The URL requested without the server name and protocol

elements and without any trailing query string.

%v The server name for the virtual host that was given the query.

HTTP (RFC 2616

) is a very subtle protocol with much more happening than you

might expect from the simple stuff we have been covering. The following table lists all

the status codes it has and which might ﬁnd themselves in your log ﬁles. In paractice

you will only see a tiny subset of them.

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