The strength of the signal does not necessarily equate to fast internet speed, but to achieve fast speeds, a strong signal is essential. Therefore, when trying to use WiFi at Starbucks, cafes, McDonald’s, shopping malls, sports venues, hospitals, buses, or subways for a day of work (as the author only thinks about work), finding a … Read more
Introduction Environment Cluster Installation and Deployment First Machine Second Machine Third Machine Change the owner and group of the elasticsearch directory Switch to the es user and start the es on all three machines Cluster Startup Verification Restart the three nodes in sequence Verification es Cluster Authentication x-pack Authentication Reference Documents Introduction ❝ This article … Read more
Introduction In our work, we may encounter scenarios where we need to monitor the availability of APIs. Although the official blackbox-exporter supports HTTP status checks, its flexibility is limited, making it difficult to effectively monitor interfaces that require specific request headers or bodies. A tool similar to Postman is needed to periodically check the status … Read more
Attention to all medical equipment maintenance professionals! The disassembly of the Baolait EMS module has many nuances, and making a mistake at any step may affect the normal operation of the device. Today, we will use a super simple illustration to guide you through the safe disassembly step by step, unlocking key operations quickly! The … Read more
When it comes to Beyerdynamic, audio enthusiasts are likely familiar with this brand. Originating from Germany, this professional audio brand has been deeply involved in the headphone industry for nearly a century. Today, we will introduce nine representative headphone products currently available from Beyerdynamic, ranging from sports Bluetooth to professional monitoring, from HiFi in-ear to … Read more
“Stamping motion control, uncovering the secrets of servo presses and robotic arms” Lib_AxisMonitor function block is typically used to monitor the operational status of rotating or linear axes. After receiving a running signal, it detects the minimum displacement change of the axis within a specified period. Based on this, it can determine faults such as … Read more
1. System-Level Hardening 1. Dynamic Firewall Configuration Firewall Configuration: Use firewall tools such as iptables or firewalld to strictly limit access to the model server. For example, only open specific ports required for model services and allow access only from trusted IP addresses or network segments. Example command: Allow a specific IP (e.g., 192.168.1.100) to … Read more
Introduction <span><span>watch</span></span> command repeatedly executes a given command at fixed intervals (default every 2 seconds) and displays its output in the terminal. It is very useful for monitoring changing outputs, such as disk usage, memory usage, file changes, service status, etc. Basic Syntax watch [options] command Common Options <span><span>-n, –interval</span></span>: Allows specifying the interval between … Read more
Here is a professional version of the ✅ “Linux Pre-Restart Checklist” that is very useful in production environments. 1 ✅ Linux Pre-Restart Checklist 1. Current system load and resource usage uptime / top / htop / vmstat Record the current CPU, memory, and Load Average to compare if there is any improvement after the restart. … Read more
The company gives you a smartwatch, do you like it? Most people probably would, as it monitors sleep quality, tracks exercise duration, and can be used as a watch. However, sanitation workers do not like it. Recently, sanitation workers in the Hexi area of Nanjing, Jiangsu, were issued a smartwatch with some unique features. As … Read more