Develop a bash script to orchestrate the automated deployment of two Vagrant-based Ubuntu systems, designated as 'Master' and 'Slave',
- A bash script encapsulating the entire deployment process adhering to the specifications mentioned above.
- Documentation accompanying the script, elucidating the steps and procedures for execution.
- A test PHP page validating the LAMP setup on both nodes
- A Load balancer using nginx to allow for traffic to the LAMP using the master and the slave nodes.
Oracle Virtual Machine Installed Vagrant Installed
STEPS:
- Make a directory and cd into that directory
- Run Vagrant init command to generate a Vagrantfile
- Since its a multi creation of both slave and master. All these are added to the same file.
- Ensure the ip address of both the slave and master are different (run ipconfig command to confirm in each server)
- Create a Bash script that will automate the process
Vagrantfile - This file contains multinode setup with two nodes master and slave. I configured both in the same file. I added private_network configuration in the DHCP which assigns different ip addresses.
Also included: LAMP Setup in the Vagrantfile instead of the Bash script to avoid complexity.
In the bash script l included a final step to generate a PHP test file to validate PHP functionality. The command l used in the bash scipt :
# Create a PHP test file
echo "<?php phpinfo(); ?>" | sudo tee /var/www/html/test.php
SSH Permission Denied - Turns out by default if you try to authenticate it fails if password authentication is not enabled on the server node Solution: - SSH into server B and allow password
vagrant ssh slave
sudo nano /etc/ssh/ssh_config
password authentication to be changed from no to yes
sudo systemctl restart ssh
Then copy the key from master using ssh-copy-id -i vagrant@ipaddressofslave
Created a folder Ansible for configuation management
- Created a virtual environment and activated it
python -m venv myenv
source myenv/bin/activate
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The playbook.yml contains tasks from the assignment setting up master and slave nodes
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Ansible_hosts file contains the ip addresses
To run the playbook:
ansible-playbook -i playbook.yml