> For the complete documentation index, see [llms.txt](https://paul-gleason.gitbook.io/champlain-college-classes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://paul-gleason.gitbook.io/champlain-college-classes/sec-440-systems-security/labs/project-3-web-application-and-database-redundancy.md).

# Project 3 - Web Application and Database Redundancy

Setup u1, u2, u3

‘’’

sudo hostnamectl set-hostname db0X-paul

sudo passwd champuser

sudo adduser paul

sudo usermod -aG sudo paul

‘’’

Setup networking

‘’’

sudo nano /etc/netplan/00-installer-config.yaml

‘’’

![](https://lh4.googleusercontent.com/2NN8IC2oQXzgx5-oAEInvQIFO3CsHyT1Go2ppt3d1Qs8JSyaO0hnTY_3kC6M3DEDm1a13fx2KcLY_L7BmEjqARJjm_0OS9tatQDmXRaCtoU0qdsAPDV7CTdFp8-a7cDQP_SomN3Eov0hBHu9RL8Wy5E)

\ <br>

Setup MariaDB with Galera Cluster

<br>

‘’’

Sudo apt install mariadb-server

‘’’

<br>

Edit the Galera Config

‘’’

Sudo nano /etc/mysql/mariadb.conf.d/60-galera.cnf

‘’’

![](https://lh5.googleusercontent.com/xv59-Q0SnrdEPjN-1tHUpjLW1t8llyrXpDDQUi6Pk4bAUxKJ3cPkSrOkSDLcqHtEUeSDz1qfMjcwydhkxVCn1YqhxP0ws17yXk9BewOjh-CXD_Bf4B27_kLMIlXK1QabSBuhAN6504AoyhbXTfV4Hko)

Resources:

<https://www.server-world.info/en/note?os=Ubuntu_22.04&p=mariadb&f=1>&#x20;

<https://www.linuxbabe.com/mariadb/galera-cluster-ubuntu>&#x20;

\ <br>

Update ha proxy to support db:

‘’’

Sudo nano /etc/haproxy/haproxy.cfg

‘’’

![](https://lh6.googleusercontent.com/JXzfG6DUBTz4wYIBFbTXfuoXFiaJFoFCDmAtLMVeCEKCpmK_V2KBtYVM-3vLA5q2cBW8-DZTnLLeItpuN76gOSXaXBGhUULyIPpYH4KyyqJU8hsp96Tuw09cMDYri6oGMBYgmS2b8mu5LNNqlKSTDH8)

<br>

Now restart haproxy

<br>

Now check if lan can connect the database

![](https://lh3.googleusercontent.com/USlMM1jNaT1QgUyLOk17-XYfk561ZENnKlCHA0VC05X65zA1iMrp5O9b8vyTqaIYPtRiTuK2JwxqCR2GIx56BEFW_Lfe6raZ7X50ISj8JfAuOFQzsK9_prCp95YOJIQXjrR4zTSvW_31s4HyzOw4JPs)

<br>

GRANT ALL PRIVILEGES ON \*.\* TO 'root'@'%'&#x20;

&#x20; IDENTIFIED BY 'my-new-password' WITH GRANT OPTION;

\ <br>

Make Database:

<br>

CREATE DATABASE futurama;

USE futurama;

![](https://lh4.googleusercontent.com/qJ0ZtberwOpHM--HQsw_AMplv06bd1NjyTLRTw9q18sMuOVOMhsc8PuLu34C5OgJHUxeZt1h3mOVbtME-XQ_FAj22Cfo8rMUitgpTdBCD_y2GmmcZD1HGysZ_3ZyQ_OpB0toiS_N55UcxRRFaAD6YsQ)

\ <br>

WEB:

<br>

Yum install php php-mysql mysql

sudo setsebool -P httpd\_can\_network\_connect\_db on

<br>


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