From 27c519a31da825ca27aa48e1a2d3dc7b45921852 Mon Sep 17 00:00:00 2001 From: Christopher Powell Date: Thu, 27 Mar 2003 01:58:42 +0000 Subject: Some minor additions / edits to the docs. --- Documentation/documentation.lyx | 333 +++++++++++++++++++++++++++++----------- 1 file changed, 245 insertions(+), 88 deletions(-) (limited to 'Documentation/documentation.lyx') diff --git a/Documentation/documentation.lyx b/Documentation/documentation.lyx index a678315..dfbf353 100644 --- a/Documentation/documentation.lyx +++ b/Documentation/documentation.lyx @@ -1,5 +1,5 @@ -#LyX 1.2 created this file. For more info see http://www.lyx.org/ -\lyxformat 220 +#LyX 1.3 created this file. For more info see http://www.lyx.org/ +\lyxformat 221 \textclass article \language english \inputencoding default @@ -162,7 +162,7 @@ Note which directives go in the 'main server config' and which directives This is made clear in the directive documentation. \layout Itemize -The 'time_stamp' field is stored in an UNSIGNED INTEGER column, in the standard +The 'time_stamp' field is stored in an UNSIGNED INTEGER format, in the standard unix \begin_inset Quotes eld \end_inset @@ -173,9 +173,9 @@ seconds since the epoch format. This is superior to storing the access time as a string due to size requirement -s: an UNSIGNED INT requires 4 bytes, whereas an Apache date string -- e.g. - "18/Nov/2001:13:59:52 -0800" -- requires 26 bytes: those extra 22 bytes - become significant when multiplied by thousands of accesses on a busy server. +s: an UNSIGNED INT requires 4 bytes, whereas an Apache date string (e.g. + "18/Nov/2001:13:59:52 -0800") requires 26 bytes: those extra 22 bytes become + significant when multiplied by thousands of accesses on a busy server. Besides, an INT type is far more flexible for comparisons, etc. \begin_deeper \layout Standard @@ -301,6 +301,11 @@ These installation documents assume a relatively modern GNU/Linux scenario. compiling the module for those platforms. \layout Subsubsection + +\begin_inset LatexCommand \label{sub:Solaris} + +\end_inset + Solaris \layout Standard @@ -387,6 +392,143 @@ contact \end_inset and help fill in this section. +\layout Subsubsection + +OS X +\layout Standard + +mod_log_sql should compile and work out-of-the-box on this platform. + Here are some notes from a user successfully running the module on OS X: +\layout Quote + + +\emph on +The only changes I had to make were to where I had the various libraries + installed. +\layout Quote + + +\emph on +Here are the changes I made to the head of the Makefile: +\layout LyX-Code + +APACHESOURCE = /usr/local/src/apache_1.3.27 +\layout Quote + + +\emph on +(Wasn't sure if this was really needed or not, so I downloaded the Apache + source just in case) +\layout LyX-Code + +APACHEINSTALLED = /usr/sbin +\layout LyX-Code + +APACHEHEADERS = /usr/include/httpd +\layout LyX-Code + +APXS = $(APACHEINSTALLED)/apxs +\layout LyX-Code + +MYSQLLIBRARIES = /usr/local/mysql/lib +\layout LyX-Code + +MYSQLHEADERS = /usr/local/mysql/include +\layout Quote + + +\emph on +I'm using a binary installation of MySQL and the default apache installation + on OS X Client 10.2.3, the locations of these files may vary depending on + how you've installed MySQL and will almost certainly be different if you're + using OS X Server. +\layout Standard + +My thanks to Tom Wiebe for being the first (to my knowlege) mod_log_sql + user on OS X and for providing these notes. +\layout Subsubsection + +Digital Unix +\layout Standard + +Digital Unix, like Solaris, needs to be linked against librt; see section + +\begin_inset LatexCommand \ref{sub:Solaris} + +\end_inset + +. + Here are further notes from a user successfully running the module on Digital + Unix: +\layout Quote + + +\emph on +Instead of trying to get the module to remember where the MySQL libraries + were, I instead compiled apache with the information: +\layout Quote + + +\emph on +LDFLAGS='-rpath /isp/mysql/lib/mysql' ./configure ... +\layout Quote + + +\emph on +Everything worked as expected after that. + (The error I got without this was "/sbin/loader: Fatal Error: cannot map + libmysqlclient.so" ) +\layout Quote + + +\emph on +Digital Unix (v4.0f, at least ) appears to follow the same requirements needed + by Solaris, so simply adding librt to the module made it compile without + errors. +\layout Quote + + +\emph on +As for the warnings, here's the text: +\layout LyX-Code + + +\emph on +mod_log_sql.c: In function `extract_request_duration': +\layout LyX-Code + + +\emph on +mod_log_sql.c:292: warning: long int format, different type arg (arg 4) +\layout LyX-Code + + +\emph on +mod_log_sql.c: In function `extract_request_timestamp': +\layout LyX-Code + + +\emph on +mod_log_sql.c:497: warning: long int format, different type arg (arg 4) +\layout Quote + + +\emph on +Poking around in the code, it looks like the compiler was complaining that + what time() is returning doesn't play nicely with %ld by default. + I just typecast them as (long)'s and the warnings went away ( not that + the module wasn't working correctly without them ). +\layout Quote + + +\emph on +The module works very well so far in testing... + hasn't dropped a single log entry yet. + +\layout Standard + +My thanks to Jim Turner for permitting me to quote him here, and for being + the first known user of mod_log_sql on Digital Unix. \layout Subsection Do I want a DSO or a static module? @@ -4817,24 +4959,29 @@ Context: virtual host In HTTP, cookies have names to distinguish them from each other. Using mod_usertrack, for example, you can give your user-tracking cookies a name with the CookieName directive. + \layout Standard -You must include a 'c' character in -\noun on -LogSQLTransferLogFormat -\noun default - for this directive to take effect; once you specify 'c', +mod_log_sql allows you to log cookie information. + \noun on -LogSQLWhichCookie + LogSQLWhichCookie \noun default tells mod_log_sql which cookie to log. This is necessary because you will usually be setting and receiving more - than one cookie from a client; this cookie designates which one to log. + than one cookie from a client. +\layout Standard + +You must include a 'c' character in +\noun on +LogSQLTransferLogFormat +\noun default + for this directive to take effect. \layout Standard -Note: although this was intended for people who are using mod_usertrack - to set user-tracking cookies, you aren't restricted in any way. - You can choose which cookie you wish to log to the database --any cookie +Note: although this was origintally intended for people using mod_usertrack + to create user-tracking cookies, you aren't restricted in any way. + You can choose which cookie you wish to log to the database -- any cookie at all -- and it doesn't necessarily have to have anything to do with mod_usert rack. \layout Subsubsection @@ -5742,7 +5889,7 @@ Please contact Problems \layout Subsubsection -Apache segfaults when using PHP and mod_log_sql +Apache segfaults or has other problems when using PHP and mod_log_sql \layout Standard This occurs if you compiled PHP with MySQL database support. @@ -5759,8 +5906,9 @@ real \layout Standard -The solution is to configure PHP to link against the real MySQL libraries - and recompile mod_php. +PHP and mod_log_sql can be configured to happily coexist. + The solution is to configure PHP to link against the real MySQL libraries: + recompile PHP using --with-mysql=/your/path. Apache will run properly once the modules are all using the same version of the MySQL libraries. \layout Subsubsection @@ -5983,6 +6131,83 @@ Reference: \end_inset +\layout Subsubsection + +Sometimes a single VirtualHost gets logged to two different tables (e.g. + access_foo_com, access_www_foo_com). + Or, accesses to an unqualified hostname (e.g. + +\begin_inset Quotes eld +\end_inset + +http://intranet/index.html +\begin_inset Quotes erd +\end_inset + +) get logged in separate tables. +\layout Standard + +Proper usage of the Apache runtime +\noun on +ServerName +\noun default + directive and the directive +\noun on +UseCanonicalName On +\noun default +(or +\noun on +DNS +\noun default +) are necessary to prevent this problem. + +\begin_inset Quotes eld +\end_inset + +On +\begin_inset Quotes erd +\end_inset + + is the default for +\noun on +UseCanonicalName +\noun default +, and specifies that self-referential URLs are generated from the +\noun on +ServerName +\noun default +part of your VirtualHost: +\layout Quote + +With UseCanonicalName on (and in all versions prior to 1.3) Apache will use + the ServerName and Port directives to construct the canonical name for + the server. + With UseCanonicalName off Apache will form self-referential URLs using + the hostname and port supplied by the client if any are supplied (otherwise + it will use the canonical name, as defined above). + [From +\begin_inset LatexCommand \url[the Apache documentation]{http://httpd.apache.org/docs/mod/core.html#usecanonicalname} + +\end_inset + +] +\layout Standard + +The module inherits Apache's +\begin_inset Quotes eld +\end_inset + +knowledge +\begin_inset Quotes erd +\end_inset + + about the server name being accessed. + As long as those two directives are properly configured, mod_log_sql will + log to only one table per virtual host while using +\noun on +LogSQLMassVirtualHosting +\noun default +. \layout Subsection Performance and Tuning @@ -6236,7 +6461,7 @@ not correct \series default to assume that 20 Apache children with a VSZ of 7MB each equals -\begin_inset Formula $(20\times 7MB)$ +\begin_inset Formula $(20\times7MB)$ \end_inset of memory consumption -- the real answer is much, much lower. @@ -6359,74 +6584,6 @@ How do I...? -- accomplishing certain tasks \layout Subsubsection -I am using LogSQLMassVirtualHosting, and sometimes a single VirtualHost - gets logged to two different tables. - How do I prevent that? -\layout Standard - -Proper usage of the Apache runtime -\noun on -ServerName -\noun default - directive and the directive -\noun on -UseCanonicalName On -\noun default -(or -\noun on -DNS -\noun default -) are necessary to prevent this problem. - -\begin_inset Quotes eld -\end_inset - -On -\begin_inset Quotes erd -\end_inset - - is the default for -\noun on -UseCanonicalName -\noun default -, and specifies that self-referential URLs are generated from the -\noun on -ServerName -\noun default -part of your VirtualHost: -\layout Quote - -With UseCanonicalName on (and in all versions prior to 1.3) Apache will use - the ServerName and Port directives to construct the canonical name for - the server. - With UseCanonicalName off Apache will form self-referential URLs using - the hostname and port supplied by the client if any are supplied (otherwise - it will use the canonical name, as defined above). - [From -\begin_inset LatexCommand \url[the Apache documentation]{http://httpd.apache.org/docs/mod/core.html#usecanonicalname} - -\end_inset - -] -\layout Standard - -The module inherits Apache's -\begin_inset Quotes eld -\end_inset - -knowledge -\begin_inset Quotes erd -\end_inset - - about the server name being accessed. - As long as those two directives are properly configured, mod_log_sql will - log to only one table per virtual host while using -\noun on -LogSQLMassVirtualHosting -\noun default -. -\layout Subsubsection - How do I extract the data in a format that my analysis tool can understand? \layout Standard -- cgit