Introduction in one sentence: Ad-hoc commands are Ansible’s “quick knife”, allowing you to manage servers in bulk with a single command in the command line. 1. What are Ad-hoc Commands? In Ansible, there are two main execution methods: 1.Ad-hoc commands: Execute a single task directly in the command line, suitable for temporary bulk operations. 2.Playbook: … Read more
Linux Cloud Computing | Daily Practice | Practical Tools | Career Development 💥 “Manually SSH logging into 100 servers to change configurations, working overtime until dawn and still missing some?” “Inconsistent environments across different machines, crashing upon deployment?” “Mistyping commands during late-night deployments and being held accountable?” These operational “nightmare scenarios” are essentially due to … Read more
⏰ Ansible Firefighting Hotline | Struggling with Time Synchronization Failures? One-Click Automated Diagnosis Turns You into a Time Expert! Are you still struggling with chaotic troubleshooting of chronyd time synchronization failures? Today, we bring you a comprehensive automated analysis solution for chronyd time synchronization failures on RHEL8/9 & CentOS8/9, allowing you to say goodbye to … Read more
Introduction in one sentence: Ansible is an open-source automation tool that helps you manage servers in bulk, deploy applications, and execute tasks, making repetitive work automated, repeatable, and error-free. 1. What is Ansible? Ansible is an IT automation tool written in Python, used for: ·Configuration Management: Bulk modification of system configurations (e.g., adding users, installing … Read more
1. Batch Configuration of SSH Passwordless Login The prerequisite for this operation is to generate a public key on the management machine: # Execute on the management machine (the machine with Ansible installed) to generate RSA key pairssh-keygen -t rsa -b 2048 -f ~/.ssh/id_rsa Add IP addresses and passwords in the relevant files: Modify the … Read more
1. Overview of Ansible Ansible is an increasingly popular open-source automation tool for operations management. It enables automation of operational tasks, 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 … Read more
Recently, I learned about some minor issues encountered when installing software packages in an internal network environment. I would like to share this with everyone and hope for your suggestions! 1. Install yum-utils Error: not found # yum install yum-utils -yLast metadata expiration check: 0:00:50 ago on Wednesday, September 17, 2025 09:25:19. No match for … Read more
Ansible is an automation tool written in Python that can achieve cluster automation management and perform common operational tasks.Many companies today use cluster deployment services, ranging from a few virtual machines to hundreds or thousands. Sometimes, it is necessary to perform operational tasks on a single cluster or multiple clusters, and at this point, Ansible … Read more
1. Introduction In today’s rapidly evolving technological landscape, automated operations and maintenance have become key factors for enterprises to enhance efficiency and competitiveness. As business scales expand and system complexities increase, ensuring the efficiency and reliability of operations and maintenance has become a significant challenge for every team. Ansible, as a leading open-source automation platform, … Read more
Recently, there has been a project underway to migrate a lightweight cluster previously running on K3s to a K8s private cluster. The advantage of K3s is its lightweight nature and quick deployment, making it suitable for edge scenarios and small to medium-sized environments. However, as the complexity of the business increased, we ultimately chose the … Read more