Install Apache httpd on CentOS Linux 7

1. Run the following command:

sudo yum install httpd

2. Keep a backup copy after httpd.conf

cp /etc/httpd/conf/httpd.conf ~/httpd.conf.backup.timestamp

3. Check installed version with:

httpd -v
 
Server version: Apache/2.4.6 (CentOS)
Server built:   Oct 19 2017 20:39:16

4.  Right now httpd is installed and not running:

service httpd status
 
Redirecting to /bin/systemctl status  httpd.service
httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:httpd(8)
           man:apachectl(8)

5. Create document root folder:

cd /var/www/html && mkdir test.com

6. Add document root to httpd.conf

vi /etc/httpd/conf/httpd.conf 

...
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
DocumentRoot "/var/www/html/test.com"
...

7. Configure virtual host:

cd /etc/httpd/conf.d

touch vhost.conf

vi vhost.conf
 ....

<VirtualHost *:80>
    ServerName localhost
    ServerAlias www.test.com
    DocumentRoot /var/www/html/test.com/
    ErrorLog logs/error.log
    CustomLog logs/access.log combined
</VirtualHost> 
...

8. Test httpd configuration by running:

service httpd configtest
 
Syntax OK

9. Start apache httpd:

service httpd start

10. Check service is running:

service httpd status

Redirecting to /bin/systemctl status  httpd.service
httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
   Active: active (running) since Wed 2017-11-29 07:44:34 PST; 7s ago
     Docs: man:httpd(8)
           man:apachectl(8)
 Main PID: 21159 (httpd)
   Status: "Processing requests..."
   CGroup: /system.slice/httpd.service
           ├─21159 /usr/sbin/httpd -DFOREGROUND
           ├─21160 /usr/sbin/httpd -DFOREGROUND
           ├─21161 /usr/sbin/httpd -DFOREGROUND
           ├─21162 /usr/sbin/httpd -DFOREGROUND
           ├─21163 /usr/sbin/httpd -DFOREGROUND
           └─21164 /usr/sbin/httpd -DFOREGROUND

11. Make sure Inbound port 80 is enabled on CentOS 7 Firewall:

firewall-cmd --zone=public --add-port=80/tcp 

success

12. Test from within browser apache is accessible: