Freaks City

Ansible provdies a rich set of built-in modules for automating system administration tasks. You can list all available modules with ansible-doc -l and view detailed documentation for any module using ansible-doc <module_name>. ping Verifies connectivity to target hosts. ansible all -m ping command Executes commands on remote nodes withou ...

Ansible provides several modules for executing commands and scripts on remote hosts. This section details the command and script modules. The command Module The command module is Ansible's default. It executes commands on remote nodes. Unlike the shell module, it does not support shell features like redirection (>), pipes (|), or variable ex ...

Operational Domains and Maturity Path Domain Core Responsibilities DC Ops racking, cabling, power, cooling, labeling, inventory Infra Ops OS provisioning, network plumbing, firmware Monitoring 24×7 watch, alert triage, escalation Shared Services DNS, LB, CA, repo mirrors, CI runners Application Ops service topology, release gates ...

Upgrading Python from 2.7 to 3.6 Legacy virtual machines often default to Python 2.7. Verify the current installation: which python ls -lah /usr/bin/python Install Python 3.6: yum install epel-release yum install python36 cd /usr/bin/ rm python ln -s python3.6 python python --version After installation, Python 3.6 will be available at /usr/bi ...

Ansible is a Python-based automation tool that enables parallel execution of tasks across remote systems without requiring agents on managed nodes. Communication occurs over SSH, and no additional servcies need to be running on either control or managed nodes. Prerequisites Generate SSH Key Pair Clear the known_hosts file to avoid host key conf ...

Generating SSH Key Pairs Initialize secure authentication by creating an RSA key pair on the management node. The following command generates the keys without a passphrase for automation purposes. ssh-keygen -t rsa -b 2048 -f ~/.ssh/id_rsa -N "" Non-Interactive Authentication Setup To facilitate scripted connections where manual pass ...

To create a virtual environment using Python’s built-in venv: python3 -m venv venv source venv/bin/activate Once activated, install Flask: pip install Flask A minimal Flask application can be defined in app.py: from flask import Flask app = Flask(__name__) @app.route('/') def home(): return '<p>Hello, World!</p>' if __nam ...