Tag: monitor

OpenCV mouse action monitoring

cv2.setMouseCallback(winname, MouseCallback) is a monitoring function for the mouse status of the winname window. When there is a mouse action on the winname window, that is Automatically calling the MouseCallback function is equivalent to a mouse interrupt for this window. Before this function, there should be a corresponding window declaration function cv2.namedWindow(winname) to be captured […]

Vue2 (2): calculated properties, monitoring properties

Article directory 1. Computed properties 1.1 Use interpolation syntax and methods to splice names 1.2 Use computed properties to splice names 1.3 Abbreviation of computed properties 1.4 Summary of computed properties 2. Monitoring attributes-watch 2.1 Weather case foreshadowing 2.2 Lead to monitoring attributes (1). Pass in the watch configuration when new Vue (2). Monitor through […]

JavaScriptEvent monitoring, event delegation and callback functions

1. Event monitoring on method: box.onclick = function(){}, but this method will be overwritten. You can unbind the event by directly overwriting it with null. addEventListener is a method specifically used by DOM objects to add event listening. Its first two parameters are [event type] and [event callback], and the third parameter of addEventListener is […]

[Building Prometheus monitoring from scratch] Section 5: Installing Prometheus on k8s and indicator optimization

Article directory Preface Install Prometheus on Kubernetes StatefulSet is configuring Detailed explanation of configmap configuration and indicator collection optimization ideas How to filter indicators (optimize indicator volume) How to get all k8s metrics? start up View metrics Foreword In our Prometheus monitoring architecture, the main role of prometheus on k8s is to monitor k8s resources, […]

Design of greenhouse environmental data monitoring system based on microcontroller

Collect and like, your attention is the motivation for my creation Article directory summary 1. Overall plan design 2.1 Overall architecture design 2. Overall hardware circuit design 3.1 Main controller circuit 3 System Design Summary 4.2 Main program design Schematic diagram program 4. Conclusion 5. Article Table of Contents Summary Compared with developed agricultural countries, […]

Security monitoring project—mjpeg-streamer video image display (real-time video streaming implementation)

Article directory Preface 1. Hardware preparation and hardware equipment inquiry 2. Transplantation of jpeg library 2.1 Source code download 2.2 Transplantation of jpeg library 3. Transplantation of mjpeg-stream 4. Test results Summarize Foreword Continuing from the previous issue, we have implemented many functions, but the real-time upload of video streams has not yet been implemented. […]

Python script monitors domain name certificate expiration time and sends notification message to DingTalk

Version 1: Execute the script with –dingtalk-webhook and –domains and then specify the DingTalk token and domain name. python3 ssl_spirtime.py –dingtalk-webhook https://oapi.dingtalk.com/robot/send?access_token=avd345324 –domains www.abc1.com www.abc2.com www.abc3.com The script is as follows #!/usr/bin/python3 import ssl import socket from datetime import datetime import argparse import requests def get_ssl_cert_expiration(domain, port=443): context = ssl.create_default_context() conn = context.wrap_socket(socket.socket(socket.AF_INET), server_hostname=domain) conn.connect((domain, […]

Design of intelligent sensing monitoring system based on microcontroller

Collect and like, your attention is the motivation for my creation Article directory summary 1. System analysis 2.1 Design requirements for the entire control system 2.2 Overall design plan 2. System hardware circuit design 3.1 Introduction to hardware circuit 3.2 Control circuit analysis 3.2.1 Reset circuit 3. Software design 6 Introduction to Compiler Software Physical […]