# yum search httpd
# yum -y install httpd
Package httpd-2.2.15-30.el6.centos.i686 already installed and latest version Nothing to do
# chkconfig httpd on # chkconfig httpd --list httpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off # service httpd start httpd を起動中: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain for ServerName [ OK ]