Warning: mysqli_query(): MySQL server has gone away in /home/wwwroot/syntaxbug.com/wp-includes/wp-db.php on line 1924

Warning: mysqli_query(): Error reading result set's header in /home/wwwroot/syntaxbug.com/wp-includes/wp-db.php on line 1924
construction – SyntaxBug

1. Hadoop3.1.3 cluster construction

1. Cluster planning hadoop01(209.2) hadoop02(209.3) hadoop03(209.4) HDFS NameNode DataNode DataNode SecondaryNameNode DataNode YARN NodeManager ResourceManager NodeManager NodeManager Do not put NameNode and SecondaryNameNode on the same server 2. Create user useradd atguigu passwd *** Configure atguigu user permissions vim /etc/sudoers ## Allow root to run any commands anywhere root ALL=(ALL) ALL ## Allows people in […]

Vue CLI scaffolding installation, construction, configuration and CLI project analysis

Table of Contents 1. Quick Start with CLI 1. Official introduction: 2. Install Vue CLI: 3. Build Vue CLI: 4.IDEA configures Vue CLI: 2. Vue CLI project analysis 1. Structural analysis: 1.1 config 1.2 node_modules 1.3 src 1.4 static 2. Process analysis: 2.1 main.js 2.2 router/index.js 2.3 components/HelloWorld.vue 2.4 App.vue 2.5 index.html 1. Quick Start […]

Why use virtual environment in python? (Virtual environment function and virtual environment construction, switching, exit, migration and packaging) code demonstration. Official venv usage (**)

Detailed graphic and text explanation of python’s virtual environment (virtual environment functions and virtual environment construction, switching, exit, migration and packaging) code demonstration https://blog.csdn.net/weixin_45440484/article/details/130144943 http://www.360doc.com/content/23/0828/21/1339386_1094251670.shtml Why use a virtual environment? First, a virtual environment helps keep your projects clean and separate. You don’t have to worry about one project’s dependencies breaking another, which makes project […]

Hadoop 3.3.6 distributed cluster environment construction

1 System Configuration A total of 3 centOS virtual machines have been prepared, master, slave1, slave2 Configure hosts resolution vim /etc/hosts 192.168.10.11 master 192.168.10.12 slave1 192.168.10.13 slave2 Modify hostname #Execute the following commands on the corresponding server hostnamectl set-hostname master hostnamectl set-hostname slave1 hostnamectl set-hostname slave2 Turn off firewall #Close firewall systemctl stop firewalld.service #Disable […]

ZooKeeper+Kafka+ELK+Filebeat cluster construction to realize large batch log collection and display

The general process: After collecting the logs of the nginx server (web-filebeat) through filebeat, store them in the cache server kafka, and then logstash to the kafka server to retrieve the corresponding logs. After processing, they are written to the elasticsearch server and displayed on kibana. 1. Cluster environment preparation 4c/8G/100G 10.10.200.33 Kafka + ZooKeeper […]

Raspberry Pi 4B system construction (Raspberry)

1. Construction preparation 1. Download the Raspberry Pi system download link: Operating system images – Raspberry Pi /icon-default.png?t=N7T8″ alt=”icon-default.png?t=N7T8″>https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os -legacy Operating system images – Raspberry Pi /icon-default.png?t=N7T8″ alt=”icon-default.png?t=N7T8″>https://www.raspberrypi.com/software/operating-systems/#raspberry-pi-os -legacy Find here and click the first one. Since the latest system cancels the default username and password login, the latest system must use an external display […]

Hive data warehouse environment construction and data warehouse modeling

Summary of the problem: After I completed the data warehouse modeling, one day I opened my dbeaver again and all the data was gone. I found many solutions but could not solve my problem. In a fit of anger, I deleted hive and all tables. Start over 1. Hive data warehouse environment construction Hive installation […]

CentOS7 Hadoop3.X pseudo-distributed environment construction

Build environment: windows10, VMware16.2.3, centOS7.9, jdk-8u162-linux-x64.tar.gz, hadoop3.1.0 Links to Hadoop for various versions of Hadoop jdk8 download link jdk 1. Basic configuration preparations 1.1 Static IP address and other configurations Note: If you are prompted for insufficient permissions, you need to use root permissions. 1.1.1 Non-clone machine configuration static IP address ####1.1.2 Configure a static […]

Local construction of Elastic Stack (Elasticsearch + kibana + Logstash + FileBeat + APM) 7.17.14 version

Local construction of Elastic Stack (Elasticsearch + kibana + Logstash + FileBeat + APM) 7.17.14 version 1. Foreword: 1. This article is a non-cluster environment configuration description for the installation of Elastic Stack version 7.17.14. If you are using the 8.x version of the Elastic Stack product, this article does not apply. 2. The example […]

Zookeeper cluster construction and deployment

1.Zookeeper introduction Zookeeper is a distributed coordination component developed by Yahoo based on Chubby’s ideas and later donated to Apache. It is mainly used to solve distributed data consistency problems. Distributed applications can implement functions such as data publishing/subscription, load balancing, naming service, distributed coordination/notification, cluster management, Master election, configuration management, distributed locks and distributed […]