\subsection{Service}

在/usr/local/apache2/conf/httpd.conf中设置ServerName后，接下来可以使用apachectl来启动httpd。

\begin{lstlisting}[language=bash]

$ sudo /usr/local/apache2/bin/apachectl start

$ ps aux | grep httpd

root      1001  0.0  0.0  71280  3700 ?        Ss   00:18   0:00 /usr/local/apache2/bin/httpd -k start

daemon    1002  0.0  0.1 427868  4100 ?        Sl   00:18   0:00 /usr/local/apache2/bin/httpd -k start

daemon    1003  0.0  0.0 427868  3852 ?        Sl   00:18   0:00 /usr/local/apache2/bin/httpd -k start

daemon    1004  0.0  0.0 427868  3852 ?        Sl   00:18   0:00 /usr/local/apache2/bin/httpd -k start

daemon    1089  0.0  0.0 427868  3856 ?        Sl   00:18   0:00 /usr/local/apache2/bin/httpd -k start

test      1120  0.0  0.0 113000  2304 pts/1    S+   00:20   0:00 grep --color=auto httpd

\end{lstlisting}

修改httpd.conf并添加新的Apache的用户和用户组：

\begin{lstlisting}[language=bash]

$ sudo useradd apache

$ sudo groupadd apache

$ sudo /usr/local/apache2/bin/apachectl stop

$ ps aux | grep httpd

$ sudo /usr/local/apache2/bin/apachectl start

$ ps aux | grep httpd

\end{lstlisting}