As of now (April 2025), OpenSSH 10.0 has been officially released. This update removes the outdated DSA signatures, enables key exchange algorithms with quantum protection by default, and improves the behavior of scp/sftp and the security of sshd. The configuration file now supports more flexible conditional matching, providing a smoother experience. In summary: more secure, … Read more
Ansible is a powerful automation tool that simplifies complex system deployments to the level of pressing a button. Previously, operations personnel had to manually execute commands, install software, and configure environments on multiple servers, which was time-consuming, labor-intensive, and prone to errors. With Ansible, these operations can be automated, significantly reducing the operational burden and … Read more
In previous articles, we briefly discussed asymmetric encryption, which involves splitting a key into two parts: one part is kept private, known as the private key, while the other part can be publicly shared, known as the public key. The encryption algorithm ensures that data encrypted with one key can only be decrypted with the … Read more
1. Basic Introduction Ansible is a configuration management and application deployment tool developed in Python, which is now also shining in the field of automation management. It integrates the advantages of many established operation and maintenance tools, and Ansible can basically achieve the functionalities that Pubbet and Saltstack can provide. Pubbet and Chef are both … Read more
In Linux systems, there are various commands and methods to view the status of remote login users. Here are some commonly used commands and techniques: 1. Using the who command The who command is used to display information about users currently logged into the system, including usernames, login times, and login terminals. It can also … Read more
Introduction to Ansible RECRUIT 1. What is Ansible? Ansible is a newly emerging automation operation and maintenance tool developed based on Python, which integrates the advantages of many operation and maintenance tools (puppet, chef, func, fabric) to achieve functions such as batch system configuration, batch program deployment, and batch command execution. Ansible is developed based … Read more
1. Basic Syntax ansible <target host or group> -m <module name> -a "<module parameters>" •<span><target host or group></span>: Can be a host, host group in Inventory, or <span>all</span> to indicate all hosts.•<span>-m <module name></span>: Specifies the module to use (e.g., <span>ping</span>, <span>shell</span>, <span>yum</span>, etc.).•<span>-a "<module parameters>"</span>: Parameters passed to the module. 2. Common Options Option … Read more
This article is an original work by Teacher Liu from Yunbei Education. Please respect intellectual property rights; when forwarding, please indicate the source. No plagiarism, adaptations, or unauthorized reposting are accepted. In the Linux operating system, TTY (Teletypewriter) and PTS (Pseudo Terminal Slave) are two different types of terminals. They each have different uses and … Read more
“Hi, Proxmox can really do a lot of things” START Proxmox VE (PVE) can actually import OVA files, but it seems that the official web interface does not currently support imports; it needs to be done through SSH. Let’s go through an example together: 1. Download the following LEDE image https://github.com/wangyu-/udp2raw-tunnel/releases/download/20171108.0/lede-17.01.2-x86_virtual_machine_image.zip 2. After downloading, unzip … Read more
The Raspberry Pi is an inexpensive small computer. When I bought it, it was around 300 yuan, which is very practical. It can be used as a personal computer or as a server. For DIY enthusiasts, starting from scratch to assemble it is quite fun. I encountered many problems but finally completed it. The result … Read more