The button driver written in pure C language separates the button logic from the button processing event~

button drive A key driver written by Jay himself supports single double click, continuous press and long press; callback is used to handle key events (custom buffeting time), which only takes three steps to create keys, link mapping between key events and callback processing functions, and periodic check of keys. Source address: https://github. ...

Posted on Wed, 16 Oct 2019 13:32:34 -0400 by kevin_newbie

ELK introduction - simple log collection

Xiaosheng blog: http://xsboke.blog.51cto.com -------Thank you for your reference. If you have any questions, welcome to exchange Catalog: Components used this time Environmental Science WEB configuration Elasticsearch configuration Accessing elastic search and kibana through nginx Extension: filebeat input configuratio ...

Posted on Wed, 16 Oct 2019 11:11:46 -0400 by jOE :D

C language of MQTT client based on mosquitto

In the process of learning MQTT, the following contents help me https://www.runoob.com/w3cnote/mqtt-intro.html is a basic introduction to MQTT Https://mosquito.org/api/files/mosquito-h.html this website records almost all the mosquito interfaces you want to know. They all have function profiles. Maybe they can't see any points. Look at the deta ...

Posted on Wed, 16 Oct 2019 06:43:44 -0400 by zoooj

Detailed explanation of Ansible automatic operation and maintenance

Ansible, as an open-source operation and maintenance automation tool, is becoming more and more popular this year. Through ansible, operation and maintenance automation can be realized, the work efficiency of operation and maintenance engineers can be improved, and human errors can be reduced. Ansible can achieve various management tasks throu ...

Posted on Wed, 16 Oct 2019 06:14:52 -0400 by nova912

Docker uses Nexus to deploy maven private warehouse

docker creates a nexus private server 1. Get nexus3 image docker pull sonatype/nexus3 2. Create start nexus3 container docker run -dit -p 8081:8081 --name nexus -v /root/nexus-data:/var/nexus-data --restart=always sonatype/nexus3 Parameter description -dit: open a pseudo terminal in the container for interactive operation and run in the backg ...

Posted on Wed, 16 Oct 2019 05:19:05 -0400 by elfeste

Ansible automatic operation and maintenance installation and detailed explanation of common modules

Ansible, as an open-source operation and maintenance automation tool, is becoming more and more popular this year. Through ansible, operation and maintenance automation can be realized, the work efficiency of operation and maintenance engineers can be improved, and human errors can be reduced. Ansible can achieve various management tasks throu ...

Posted on Wed, 16 Oct 2019 02:15:48 -0400 by fipp

Qt writing custom control 71 arc progress bar

I. Preface At present, the chart framework in the form of web is very popular. The representative of China is echart. I have used it several times. It's very powerful and easy to use. It's open-source and free. Don't use it too well. The built-in charts and dashboards are very rich, and the presentation forms are also very diverse. The arc prog ...

Posted on Wed, 16 Oct 2019 01:55:43 -0400 by twister47

Installation of database pressure measuring tool Sysbench-0.4.12

> Recently, the company is going to oracle and migrate to mysql cluster. We choose mycat as the technology of distributed database middleware. There is no doubt that the preparatory work needs to be done well in the early stage. With the help of the operation and maintenance students, the cluster has been set up. Next, our task is the press ...

Posted on Tue, 15 Oct 2019 21:57:57 -0400 by Mind freak

Introduction to common commands of MySQL basic introduction

Next: MySQL database master slave synchronization process mysql command introduction mysql is a database management command adopt mysql --help To view relevant parameters and instructions mysql --help #mysql database management command Usage: mysql [OPTIONS] [database] #Grammatical format --help #View help d ...

Posted on Tue, 15 Oct 2019 15:50:10 -0400 by jblallement

ACL access control list -- standard access control list (Theory + Practice)

Overview of ACL (access control list) Access control list is a list of instructions applied to the router interface, which are used to tell the router which packets can be received and which packets need to be rejected. Access control is the main strategy of network security prevention and protection. Its main task is to ensure that netwo ...

Posted on Tue, 15 Oct 2019 15:35:21 -0400 by trdesigns