Installing webserver, php and database on centos 7

This is post is for LAMP aspirants who want to use centos  as linux distribution for use


Open command prompt and escalate to root user

[guest@localhost ~]$ su -
Password:
Last login: Thu Nov  9 08:52:53 IST 2017 on pts/0
[root@localhost ~]#

Install webserver (httpd) database (mariadb-server) and php

[root@localhost html]# yum install mariadb-server httpd php

Please  enter y if it asks for any confirmation before installing anything



Starting webserver

[root@localhost html]# service httpd start
Redirecting to /bin/systemctl start  httpd.service

Starting mariadb database

[root@localhost html]# service mariadb start
Redirecting to /bin/systemctl start  mariadb.service

Make webserver and database system to autostart

[root@localhost html]# systemctl enable mariadb
Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.
[root@localhost html]# systemctl enable httpd
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service.

Securing database system for first use

[root@localhost html]# mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.

Set root password? [Y/n] Y
New password:
Re-enter new password:
Sorry, passwords do not match.

New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
 ... Success!


By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] Y
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] Y
 ... Success!

By default, MariaDB comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] Y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] Y
 ... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB
installation should now be secure.

Thanks for using MariaDB!
[root@localhost html]#

We are all set to run our webserver lets create a sample webpage and test it

[root@localhost html]# echo "this is test page" > /var/www/html/sample.html

sample.html will be created at location /var/www/html which is default root for web directory. open up your favorite browser to and access the created file at http://localhost/sample.html

Using Dlink DSL-2750U as Extending Network

Intension of this article is to use Dlink DSL-2750U as secondory router to extend network. 

1. To Begin clean I would suggest to reset DSL-2750U router using hard reset switch on the back side of router. To do this all you need to connect your router to power supply and keep reset button pressed for few seconds. router will restart after this.
2. Connect to "Dlink" wireless network so that you get connected to router. Access router using browser at "http://192.168.1.1". Default username and password should be "admin"
3. In case you want to configure wireless network SSID and passkey you can do at this step. Under "SETUP" tab select "WIRELESS CONNECTION". Set SSID name at BASIC section. (You will have to reconnct to router using new ssid at this point), Next setup passkey for SSID at "ADVANCE" Section. (You will again have to reconnect to SSID using passkey).
4. Remove Network isolation this will enable connectivity between wireless and wired devices.
5. Remove DHCP , DNS Relay. Reboot your router. 
6. Connect ethernet cable from primary router to first ethernet port of secondary router, and you are all set to use DSL-2750U as network extender. 

(feel free to comment as this will give scope of improving article text-- post done in hurry.)