Project 3: Application Redundancy

Project 3: Application Redundancy

Configuring Database Servers

• On u1 u2 and u3, change he network adapters to LAN and boot. Create a new named user, elevate it to sudo group, rename server, delete old user on all 3.
• Edit the netplan configuration located in /etc/netplan/00-installer-config.yaml. The addresses for this box will be .201, .202, and .203 respectively.

network:
  ethernets:
    ens160:
      dhcp4: false
      addresses: [10.0.5.201(2,3)/24]
      gateway4: 10.0.5.1
      nameservers:
        addresses: [10.0.5.1]
  version: 2

Installing MariaDB

• Enter the following to import the MariaDB repo key:

sudo apt-get -y install apt-transport-https curl
sudo mkdir -p /etc/apt/keyrings
sudo curl -o /etc/apt/keyrings/mariadb-keyring.pgp 'https://mariadb.org/mariadb_release_signing_key.pgp'

• Create a new file called /etc/apt/sources.list.d/mariadb.sources and add the following:

# MariaDB 11.3 repository list - created 2024-02-20 15:14 UTC
# https://mariadb.org/download/
X-Repolib-Name: MariaDB
Types: deb
# deb.mariadb.org is a dynamic mirror if your preferred mirror goes offline. See https://mariadb.org/mirrorbits/ for details.
# URIs: https://deb.mariadb.org/11.3/ubuntu
URIs: https://ftp.osuosl.org/pub/mariadb/repo/11.3/ubuntu
Suites: jammy
Components: main main/debug
Signed-By: /etc/apt/keyrings/mariadb-keyring.pgp

• Then, run an apt-get update and install mariadb-server.