In modern IT operations environments, configuration management automation has become a key technology for improving efficiency, ensuring consistency, and reducing human errors. Ansible, as an open-source configuration management tool, has become one of the preferred tools for operations engineers due to its ease of use and agentless architecture. This article will provide a comprehensive introduction … Read more
Ansible Task Delegation Task Delegation Let’s discuss two scenarios: • Deploying a K8S cluster using Ansible (assuming using <span>kubeadm</span> to initialize the cluster). The Playbook will first perform initialization configuration on the <span>all</span> host group (installing packages, setting <span>sysctl</span>, <span>selinux</span>, etc.), and then it needs to execute <span>kubeadm init</span> on one node to start the … Read more
Table of Contents Ansible Command Module Operations Static Inventory Ansible Configuration File Ansible Modules INI Format Defining Nested Groups Static Inventory Example Simplifying Host Specifications through Patterns Validating Inventory Overriding Inventory Locations Defining Variables in Inventory Ad-hoc Use Cases Running Ad-hoc Commands Executing Tasks via Modules Ansible Inventory Deploying Ansible Inventory Files Ansible Command Module … Read more
From Zero to Expert: A Comprehensive Guide to Ansible Configuration Automation (Includes Complete Project Case) 1. Introduction In the modern IT operations environment, configuration management automation has become a key technology for improving efficiency, ensuring consistency, and reducing human errors. Ansible, as an open-source configuration management tool, has become one of the preferred tools for … Read more
Command Module ansible all -m command -a “ls /home”: Executes the ls /home command on all remote hosts, directly returning the directory contents. ansible webservers -m command -a “pwd”: Executes the pwd command on all hosts in the webservers group, displaying the current working directory. ansible 192.168.1.10 -m command -a “date”: Executes the date command … Read more
Hello everyone, I am Vince, a veteran in operations with 10 years of experience. In an era where hundreds of servers are managed daily, manual operations have become a thing of the past. After introducing Ansible, the operations team of a certain e-commerce platform reduced deployment time from hours to minutes, and fault recovery efficiency … Read more
1. Core Elements of a Playbook: hosts List of remote hosts to execute on tasks Set of tasks variables Built-in or custom variables called in the playbook templates Files that can replace variables in template files and implement some simple logic handlers Used in conjunction with notify, triggered by specific conditions, executed if conditions are … Read more
nginx-role.yml roles/ └── nginx ├── tasks │ ├── group.yml # Create group │ ├── main.yml │ ├── restart.yml # Restart service │ ├── start.yml # Start service │ ├── templ.yml # Copy configuration file │ ├── user.yml # Create user │ └── yum.yml # Install service └── templates └── nginx.conf.j2 # Configuration file group.yml (0 … Read more
Ansible is an open-source automation configuration management tool based on OpenSSH. It can be used to configure systems, deploy software, and orchestrate more advanced IT tasks such as continuous deployment or zero-downtime updates. The main goals of Ansible are simplicity and ease of use, and it also places a strong emphasis on security and reliability. … Read more
Command module: Executes commands on remote hosts, default module, can ignore the -m option Example: ansible webservers -m command -a ‘systemctl start httpd ‘ The command module does not support $ variables, <, >, |, ;, &, etc., while the shell module does. chdir: Change to the directory of the managed host creates: If a … Read more