Ansible

It's a tool that helps you automatically manage computers and servers without manually operating each one; write a script to handle it in batch.

Solves the issues of manual server configuration error-prone, too much repetitive work, and exhaustion from maintaining hundreds of machines, replacing old manual SSH login operations.

Operations engineers, backend developers, or anyone who needs to batch manage multiple computers and servers.

1. Install software or update systems on hundreds of servers at once.

2. Uniformly modify configuration files on all machines to ensure environment consistency.

3. Automatically deploy code to production environments to reduce human error.

4. Batch check server status or execute temporary maintenance tasks.

No need to install any extra software on managed machines, works directly via SSH; script writing is as simple as reading English sentences, easy to understand and modify.

Requires knowing some Linux commands and basic syntax, no complex programming skills needed, but you need to get used to writing YAML format scripts.