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colony Clusters are mainly divided into three categories (high availability cluster, load balancing cluster and scientific computing cluster) High availability cluster Load balance cluster High performance computing cluster 1. High availability cluster    HA clusters made of two nodes are common. They have many popular and uns ...

preface Recently, in the communication with fans, it was said that the white whoring server has not been used yet. Here I provide a way to use it: She inspired me by the concept of pseudo distributed Hadoop deployment. Because my private work often needs to use Hadoop cluster, local startup has been criticized for slow startup speed, t ...

intention These days, I plan to temporarily transfer my cloud server to someone else. If I send my account directly to someone else, the risk is too high. Discover that you can configure subaccounts under your own main account and set resource access permissions for subaccounts. Now we have made some explorations, mainly to achieve the fol ...

nginx+uwsgi+Django installation 1. Introduction linux edition Centos7.5 uwsgi-2.0.20 Django-3.2.9 python3.9.0 nginx-1.16.0 2. Install nginx For the connection of installing nginx, please refer to this: https://blog.csdn.net/weixin_44217786/article/details/121608813 3. Install uwsgi Download the official website: https://uwsgi-docs.readth ...

Calculation properties   - computed Definition: the attribute to be used does not exist. It must be calculated from the existing attribute Principle: the bottom layer uses getter s and setter s provided by the Object.defineproperty method   The following case: calculate the full name by the following last name and first name &nbsp ...

catalogue 1, Introduction to mysql index 1. The concept of index 2. Basic principles of index creation 3. Index creation and classification 1. General index 2. Unique index 3. Primary key index 4. Combined index (single column index and multi column index) 5. Full text index (FULLTEXT) 4. View index 5. Delete index 2, Introduction t ...

introduction The remote warehouse can pull a tomcat image, and then docker run starts the container, and then docker exec -it container id /bin/bash enters the container and returns our program to webapps. Wait, this series of operations need to be operated manually step by step. Then I ask you: you don't have the deployment permission of ...

Database installation Experimental environment Redhat8.3 Method 1: use the MySQL repository to install and deploy mysql 1, Add MySQL repository Add the MySQL Yum repository to the repository list of the system. This is a one-time operation that can be performed by installing the RPM provided by mysql. Follow these steps: Go to th ...

Network programming concerns Connection establishment It is divided into two types: the server handles the connection of the receiving client, and the server connects to the third-party service as the client; int clientfd = accept(listenfd, addr, sz); int connectfd = socket(AF_INET, SOCK_STREAM, 0); connect(connectfd, (struct sockaddr *)&a ...

Static Web server - return fixed page data Learning objectives Be able to write the response message of assembling fixed page data 1. Develop your own static Web server Implementation steps: Write a TCP server programObtain the http request message data sent by the browserRead the fixed page data, assemble the page data into HTTP res ...