The httpd.conf file

The httpd.conf file is the main configuration file of Apache. It rests in “apache-install-dir/conf”

Now lets take a look at some important and useful parameters

ServerName
This is param sets the default server name, it should generally be the FQDN or the Fully Qualified Domain Name of the machine, or the IP, if the machine doesn’t have any FQDN.

Directory
This is a setting which encloses any of the settings for the given directory. So you specify the physical directory as the argument. So if you have a directory as /websites/mywebsite/somedir, you would do the following.

<Directory /websites/mywebsite/somedir>
... your settings
...
</Directory>

AllowOverride
AllowOverride
The AllowOverride allows the user, to override some of the settings by using their own file. This own file is the magical .htaccess file. By default it is set to None, which means the user can’t override the settings by specifying the .htaccess file in the directory. But you can change the AllowOverride None setting to AllowOverride All

Options
This directive takes several options, I’ll explain some them,
Indexes: This allows a directory listing. U must have come accross something like this
Directory Listing

FollowSymLinks: This allows apache to follow symbolic links, symbolic links are nothing but links in *nix systems, eg. “files” in /etc/ can point to /files/myfiles/files
You can use both these options at once by

Options +Indexes -FollowSymLinks

The above setting will allow directory listing but won’t allow Symbolic links. So “+” to apply and “-” to remove the setting

AccessFileName
I talked about the magic file .htaccess, This is the place where you specify the name of the file, By default it is “.htaccess”
The . “period” start is to make it a hidden file in *nix systems

Denying files
To deny files over the web, is the job of the server, in apache, we can do exactly by using the Files directive.

<Files ~ "^\.ht">
    Order allow,deny
    Deny from all
    Satisfy All
</Files>

Note the ~ sign, this is used when you are giving a regular expression to match the files., Once the files are selected, they can be denied by using the Deny directive.
The above regex is to deny all the files that start with a “.ht”

Access Logs
To create access logs, we need to specify the format of the log, and the file path.
First we need to set the LogFormat directive
The most common is the “combined” log, which logs ip, user, time error code, referer and user agent

LogFormat “%h %l %u %t \”%r\” %>s %b \”%{Referer}i\” \”%{User-Agent}i\”” combined

Note: the log format has been given a name “combined”, feel free to create different formats for your needs and name it accordingly
Then we need to set the filename of the log,

CustomLog /usr/local/apache/logs/access_log common

The second parameter of the CustomLog directive which sets the filename of the log is the log format name, that we defined earlier.

Server-Status
When you want to look at the current status of the server, ie whom is it responding to, what pages is it serving, how many servers are running… and so on..
There is no better way than to set server-status
Check the screen shot of it.

server-staus

To enable it …

<Location /server-status>
    SetHandler server-status
    Order deny,allow
    Deny from all
    Allow from 192.168.0.84
</Location>

check the configuration, it is allowing only IP 84 to check the stats and others are forbidden. You can set your IP as you wish.
If you want even more info. you can set the Extended status

ExtendedStatus On

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