Minimal logging with Apache

Access log

Using this log format, Apache will just save the date, time, HTTP method, requested page, HTTP version, status code, and the amount of delivered data (read: sent bytes) for each access:

LogFormat "127.0.0.1 - - %t \"%r\" %>s %b" common

You must configure each logfile to use this common format, e.g.:

CustomLog "/var/log/httpd-access.log" common

Error log

As of Apache 2.4, you can also set a custom format for the error log:

ErrorLogFormat "[%{u}t] [%-m:%l] [pid %P] %7F: %E: [vhost %v] %M"

Using this format, the error log will only contain

the date and time
the name of the webserver module logging the message
the process id of the webserver process handling the request
source code file and line number of the webserver module logging the message
status code and error string from the operating system or the Apache runtime
the server name of the virtual host logging the message
the actual message.