Use Ansible playbook to Configure Reverse Proxy i.e. Haproxy and update its configuration file automatically each time a new Managed node (Configured With Apache Web Server) joins the inventory. Do setup on AWS Cloud Using Dynamic Inventory.

HAPROXY — HAProxy is open-source software that helps in load balancing. It improves speed and makes it efficient. It does reverse proxy means when the client sends a request to load balancer it creates another request and sends it to the webserver.

STEP 1 -

first Install ec2.py and ec2.ini files from this link — https://github.com/ansible/ansible/tree/stable-2.9/contrib/inventory

Otherwise, use these links to download directly on Redhat Linux operating system — https://raw.githubusercontent.com/ansible/ansible/stable-2.9/contrib/inventory/ec2.py

https://raw.githubusercontent.com/ansible/ansible/stable-2.9/contrib/inventory/ec2.ini

Use command -

1. wget https://raw.githubusercontent.com/ansible/ansible/stable-2.9/contrib/inventory/ec2.py
2. wget https://raw.githubusercontent.com/ansible/ansible/stable-2.9/contrib/inventory/ec2.ini

STEP 2-

Download boto by using the command “ pip3 install boto ”.

STEP 3 -

Install ec2 package by using “ pip3 install ec2 ”.

STEP 4 -

Set your IAM user Access Key and Secret Key.

NOTE — don’t use the root account access key and secret key and don’t share your keys with anybody.

The keyword used to set key is -

“ export AWS_ACCESS_KEY_ID=’XXXXXXXXXXXXXXXX’ “

“ export AWS_SECRET_ACCESS_KEY=’XXXXXXXXXXXXXXXXXXXXXX’ ”

STEP 5 -

Setup ansible.cfg file by using below code -

1. Give path of dynamic inventory (where you kept ec2.py and ec2.ini file )
2. Set host key checking to false.
3. Set remote user as ec2-user
4. Give the path of the private key
5. Give privileges escalation

STEP 6 -

Change the access permission of the key file by using the command “ chmod 400 key.yml “.

— — — — — — — — — — — — — — — — — — — — — -

CODE -

Ec2.yml-

Haproxy.yml -

Variable.yml-

— — — — — — — — — — — — — — — — — — — — — -

ALL THINGS ARE SET NOW WE CAN RUN THE ANSIBLE CODE -

TIME TO SECURE THE KEY -

By using the vault command we can secure our critical data or credentials. Here I have secured my access key and secret key.

The command to secure data is — “ ansible-vault create key.yml ”

It will ask for a password so set a password.

LAUNCH EC2 INSTANCE -

While launching ec2 instances I am launching one instance as a load balancer and two instances as a web server.

The command to launch the ec2 instance is — “ ansible-playbook — ask-vault-pass ec2.yml ”

LoadBalancer and Backend Servers are launched successfully -

LOAD BALANCER -

WEB SERVER -

CHECK DYNAMIC INVENTORY HOSTS -

As Dynamic inventory is picking up IPs in real-time.

The command to check the host is — “ ansible all — list-hosts ”.

As we have given tags to each instance so we can check hosts by using tag names.

Command to check hosts by tag name is — “ ansible tag_Key_Value — list-hosts ”

LOAD BALANCER-

WEB SERVER-

VOLUME ATTACHED TO INSTANCES-

By default, volume is created.

LAUNCH REVERSE PROXY SETUP-

The command to launch a playbook in — “ ansible-playbook file.yml ”

The command to show extra details while launching setup is — “ ansible-playbook -v file.yml ”

HAPROXY CONFIG FILE-

After launching haproxy the webserver IP will be updated dynamically.

CHECK THE WEBSITE -

IP:8080 — write this in the search bar and that will open the webserver.

SEE OUR CODE HAS TRANSFER FILES -

LOAD BALANCER -

WEB SERVER -

Thank You for reading this article!!

Github URL — https://github.com/manali1230/ANsible_haproxy_aws_dynamic_inventory.git