e-commerce./ansible-setup at main · icegit24/e-commerce. · GitHub

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# Ansible Installation

Ansible is an open-source automation platform. It is very, very simple to set up and yet powerful.
Ansible can help you with configuration management, application deployment, task automation.

### Pre-requisites

1. An AWS EC2 instance (on Control node)

### Installation steps:
#### on Amazon EC2 instance

1. Install python and python-pip
   ```sh
   yum install python
   yum install python-pip
   ```
1. Install ansible using pip check for version
    ```sh
    pip install ansible
   ansible --version
   ```

1. Create a user called ansadmin (on Control node and Managed host)
   ```sh
   useradd ansible
   passwd ansible
   ```
1. Below command grant sudo access to ansadmin user. But we strongly recommended using "visudo" command
    if you are aware vi or nano editor.  (on Control node and Managed host)
   ```sh
   #echo "ansible ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
   echo "ansible  ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/ansible
   ```

1. Log in as a ansadmin user on master and generate ssh key (on Control node)
   ```sh
   sudo su - ansible
   ssh-keygen
   ```
1. Copy keys onto all ansible managed hosts (on Control node)
   ```sh
   ssh-copy-id ansadmin@<target-server>
   ```

1. Ansible server used to create images and store on docker registry.
   Hence install docker, start docker services and add ansadmin to the docker group.
   ```sh
   yum install docker

   # start docker services
   service docker start
   service docker start

   # add user to docker group
   usermod -aG docker ansible

   ```
1. Create a directory /etc/ansible and create an inventory file called "hosts" add control node and managed hosts IP addresses to it.

### Validation test
      ```sh
    sudo mkdir /etc/ansible
    sudo chown -R ansible:ansible /etc/ansible
    vi /etc/ansible/ansible.cfg   # default ansible_config file
       host_key_checking = False
   ```
### Create Ansible Hosts file
``` sh
localhost
[ubuntu]
172.31.20.135 ansible_user=ubuntu ansible_ssh_private_key_file=~/docker_key.pem
[dbServers]
#54.166.255.168
54.166.255.168 ansible_user=admin ansible_ssh_private_key_file=~/.ssh/id_rsa
#[webServers]
#172.31.85.223
#172.31.37.112 ansible_user=admin ansible_password=land
# 172.31.85.223 ansible_user=ec2-user ansible_ssh_private_key_file=~/aws.pem
172.31.85.223 ansible_user=admin ansible_ssh_private_key_file=~/key.pem

[appServers]
172.31.22.155 ansible_user=ec2-user ansible_ssh_private_key_file=~/docker_key.pem

1. Run ansible command as ansadmin user it should be successful (Master)
   ```sh
   ansible all -m ping
   ```