Do you remember the nervousness of typing the ls command for the first time? That black-and-white terminal window felt like a gateway to a new world. Twenty years ago, who would have thought that this group of geeks tinkering with the ‘penguin system’ would become the invisible guardians of the internet age? The Rise from … Read more
Hello everyone! Today we are going to talk about a very popular automation operation and maintenance tool—Ansible. Whether you are a developer or an operations engineer, if you are still logging into servers one by one to execute commands manually, Ansible will definitely become your favorite tool. Ansible is an open-source automation deployment and configuration … Read more
Best Practices for Ansible: Making Automated Operations More Elegant and Efficient > Master these tips to say goodbye to chaotic Playbooks Introduction: Why Do We Need Best Practices? Hello everyone, I believe many of you have experienced this when using Ansible: as you write your Playbook, it turns into a tangled mess, and two months … Read more
Do you remember that night when you were woken up by a phone call at 3 AM? Twenty servers in the production environment needed urgent configuration updates, and you had to log in via SSH one by one, repeating the same commands. Two hours later, as you dragged your exhausted body to complete the task, … Read more
0. Introduction: Why You Need “Tools” Instead of “Common Commands” Abstract: Infrastructure as Code (Terraform) and Configuration Management/Orchestration (Ansible) transform “human repetitive labor” into reproducible code. However, when automation encounters the real world—state drift, hardware, emergency changes, approvals, sensitive information, and third-party dependencies—”boundaries” are exposed. This article explains these gaps, common pitfalls, and practical models … Read more
Ansible Playbook Grouping Plays with Block Playbooks can group plays using <span>block</span>, not only for grouping, but <span>block</span> can also handle task errors during the execution of the <span>block</span>. <span>block</span> handles errors in two ways: • <span>rescue</span>: This task will only execute if a task within the <span>block</span> returns a failed status. • <span>always</span>: This … Read more
Ansible Playbooks are written in YAML. They describe the entire process of automation in a human-readable language. This article will delve into the fundamental core of Playbooks, further mastering the clever uses of Ansible scripts. YAML Syntax 1. Indentation Rules <span>YAML</span> uses spaces for indentation to represent hierarchical relationships, which is its most basic syntax … Read more
1. Overview of Ansible Ansible is an increasingly popular open-source automation tool for operations management. It enables automation of operations, improving the efficiency of operations engineers and reducing human errors.Ansible can perform various management tasks through its rich set of integrated modules, with over a thousand built-in modules. More importantly, it is very easy to … Read more
First, my system is Ubuntu 24.04 LTS, operated as the root user;The first step is to install, then check the version, followed by generating keys and verifying; the commands in the screenshot can be typed manually, do not copy directly at the beginning;Next, a small script is used to distribute keys in bulk; the first … Read more
Features: Developed based on Python (paramiko), modular work Communicates with remote hosts via SSH, no agent installation required on clients, only Ansible needs to be installed on the control node Management Architecture Inventory host list: List of managed host IPs, categorized Ad-hoc: Command line batch management (ans module) for temporary tasks Playbook mode: Similar to … Read more