I. Ansible Configuration
A. Installation
Installing Ansible on a control node is relatively simple and straightforward. The process of installing Ansible will vary depending on the operating system that is being used.
Installing on Linux:
On most Linux distributions, Ansible can be installed using the package manager. For example, on Ubuntu or Debian, Ansible can be installed with the command "sudo apt-get install ansible"
Alternatively, you can also install Ansible by downloading the source code and running the command "python setup.py install"
Installing on Windows:
Ansible can be installed on Windows by using the Windows Subsystem for Linux (WSL)
Once WSL is installed, you can install Ansible by following the Linux installation process
Alternatively, you can also use Ansible in a Windows environment by using a virtual machine or Docker container
Installing on MacOS:
On MacOS, Ansible can be installed using the package manager Homebrew by running the command "brew install ansible"
Alternatively, you can also install Ansible by downloading the source code and running the command "python setup.py install"
After the installation process, you can verify that Ansible is installed and check the version by running the command "ansible --version".
It's worth noting that, depending on the modules you'll be using and the systems you are managing, you might need to install some additional dependencies and libraries.
In summary, Ansible installation process will vary depending on the Operating system, it can be installed using the package manager, by downloading the source code, or using virtual machines or Docker container. It's important to verify the installation and check the version after the installation process is done.
B. Inventory file
An inventory file is a simple text file that is used by Ansible to determine which managed nodes to connect to and what tasks to run on those nodes. The inventory file lists the managed nodes, along with their IP addresses or hostnames, and any additional information that is needed to connect to them.
The inventory file is located on the control node and it is used by Ansible to connect to the managed nodes using SSH. The default location of the inventory file is /etc/ansible/hosts, but it can be changed using the configuration file (ansible.cfg).
In summary, the inventory file is a simple text file that lists the managed nodes, along with their IP addresses or hostnames, and any additional information that is needed to connect to them, it is used by Ansible to connect to the managed nodes using SSH and it is written in a simple INI format. The inventory file can include variables for each node or group, and Ansible supports various inventory file types, and dynamic inventory.
C. Configuration file
The Ansible configuration file, typically named ansible.cfg, is a file that contains settings and options that control the behavior of Ansible. This file is located on the control node and it is used to set various options, such as the location of the inventory file, the user to connect as, and the private key to use for SSH connections.
The configuration file is in INI format and it contains sections, each section corresponds to a specific aspect of Ansible's behavior, such as defaults, inventory, and ssh_connection.
The defaults section allows you to set default values for various Ansible options, such as the remote user, the private key to use, and the become method.
The inventory section allows you to specify the location of the inventory file, and it can also be used to set options that affect how Ansible interacts with the inventory file.
The ssh_connection section allows you to set options related to SSH connections, such as the SSH private key to use, the SSH user, and the SSH timeout.
Ansible also supports an environment variable named ANSIBLE_CONFIG that can be used to specify the location of the configuration file, if it is not located in the default location.
It's worth mentioning that the configuration file is optional, and if not present, Ansible will use the default settings.
In summary, the Ansible configuration file, typically named ansible.cfg, is a file that contains settings and options that control the behavior of Ansible, it is located on the control node, it is in INI format and it contains sections like defaults, inventory, and ssh_connection. It allows to set various options, such as the location of the inventory file, the user to connect as, and the private key to use for SSH connections. It's optional and if not present, Ansible will use the default settings.
D. Setting up SSH
Setting up SSH is an important step in configuring Ansible, as it is the method used by Ansible to communicate with managed nodes. SSH, or Secure Shell, is a protocol that allows for secure and encrypted communication between two systems.
To set up SSH for use with Ansible, the following steps need to be taken:
Copy the public key to the managed nodes: On the control node, use the ssh-copy-id command to copy the public key to the managed nodes. This will allow the control node to connect to the managed nodes using the private key.
Test the SSH connection: On the control node, use the ssh command to test the connection to the managed nodes. This will ensure that the control node can connect to the managed nodes using the private key.
It's worth noting that SSH setup may vary depending on the platform you're using. For example, on Windows, you may need to install an SSH server and configure it accordingly.
In summary, setting up SSH is an important step in configuring Ansible, it involves generating an SSH key pair on the control node, copying the public key to the managed nodes, configuring the managed nodes to allow key-based authentication and disabling password-based authentication, and testing the SSH connection. This allows for secure and encrypted communication between the control node and the managed nodes, which is necessary for Ansible to work properly.
About the Creator
From Job to Prison: Revenge, Sacrifice, and Ending
The story begins by showing a bald and strong man named Bradley, who is a car mechanic by profession. As usual, Bradley reaches the garage with a broken car, but after arriving there, he sees that the garage owner is anxiously waiting only for him, which makes him a little surprised. Then the garage owner calls him into his office. Hearing this, Bradley understands that he is about to be fired from his job, and exactly that happens. The owner tells him that these days the garage is going through a financial crisis, and that is why he is being forced to fire some workers. But this is only an excuse, because Bradley is a hard-tempered man, and the owner wants to remove him and hire someone who flatters him. Now since Bradley is a tough man, he does not argue with the owner. He goes to the locker room, takes out his belongings, takes his car, and silently leaves for home. And yes, friends, this is where the downfall of Bradley’s life begins, which continues straight until the end of the story and ends there. Anyway, Bradley stops his car in front of his house, and at the same time he sees that his wife Lauren is sitting in her car, talking to someone on the phone. Bradley becomes suspicious of her. To know the truth, he keeps watching her carefully for some time. When he becomes sure, he immediately goes to Lauren and tells her to open the car door. His wife says, “You came back from work very early today.” At the same moment, Bradley notices marks of someone else’s lips on her neck and says to Lauren, “Give me your phone.” But Lauren refuses to give the phone, because of which Bradley forcefully snatches the phone from her, and his suspicion turns out to be correct. She is talking on the phone with another man. In anger, Bradley tells Lauren to go inside the house. Lauren says, “At least listen to me.” Bradley says, “I said go inside the house.” Then Lauren silently goes inside the house. Now, he had already been fired from his job a little while ago, and now his wife’s affair, because of which he had become even more disturbed, so he starts taking out all his anger on Lauren’s car. How? You can see that yourself. Yes, he is so angry that he does not even realize that his hands have been badly injured. After that, he calms himself down and goes inside the house and questions Lauren about how many days she has been with the other man. Lauren tells him everything, that for the past three months she had been having an affair with someone else. Actually, Bradley’s wife had an abortion a few days earlier, because of which she used to remain sad, and Bradley often stayed busy with his work. Because of this, Lauren felt lonely and very depressed at home, and to fill this emptiness, she had to take support from another man. Hearing these things, Bradley realizes that he should have given time to Lauren. He apologizes to Lauren for this and says that from today, from right now, they will both start a new life. Lauren agrees. After that, Bradley tells Lauren that he has been fired from his job and now he will work for a man named Gil, who is a drug lord. As soon as she hears Gil’s name, Lauren clearly refuses and says, “You yourself said that you would never work with Gil.” Bradley says, “Yes, but in such circumstances, we cannot live like a prosperous family. To run a family, money is needed, and at this time I have no other option.” He also assures Lauren that he will do this work very carefully.
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