Docker uses

... docker to use 基本[ docker images docker pull centos docker search centos docker run -it centos /bin/sh docker ps docker stop centos docker kill centos docker start centos docker restart centos docker-compose up -d ...


Hadoop circle common components introduction

... Pig provides SQL-like Pig Latin language, supports filter, groupby, join, orderby, etc., supports user-defined functions; pig will convert user-written scripts into MR (similar to Hive), and Automatic optimization, perform MR query operation. pig can load data, express conversion data...


Golden Autumn October Job Season - answering 10 common interview questions in the big data & data analysis industry

... "Golden Autumn October, enjoy yourself", the National Day is coming soon, the major companies are still in the recruitment season In full swing, I look forward to a long 7-day National Day holiday. Are you planning to come and say that you are leaving? Before that, you bravely resigned...


Use docker-composer to deploy the nodejs application

... 新建Dockerfile Create a new Dockerfile FROM node:8 WORKDIR /usr/src/app ADD . /usr/src/app RUN npm install --registry=https://registry.npm.taobao.org USER node EXPOSE 8080 8080 port in the application directory, please adjust according to the actual situation. It is recommended to be...


Hadoop platform to build a complete step

... Hadoop platform to build a complete step 环境准备 can also use VMware. to create three virtual machines hd-master, hd-node1, hd-node2 three The host name (hostname) in the virtual machine server is changed to master, node1, and node2. Create a good virtual machine (1) In order to be able to...


Five Ways to Improve Cloud Security Factor

... The rise of cloud computing is undoubtedly the fact that enterprises adopt cloud computing with obvious cost-effectiveness, increased productivity, greater mobility, better user interoperability, accessibility and Flexibility has also been effectively improved. Cloud computing is a very...


The Habse cluster is deployed on centos7.3 and the problems encountered

... 一, preliminary preparation 1, download hbase installation package Currently installed version is: hbase-2.0.2-bin.tar .gz 2, ready to install the target machine of the cluster environment 3, copy the downloaded compressed package to the cluster machine ---- can use the shell software rz...


Tencent cloud map, let the data speak

... Welcome everyone to Tencent Cloud + community, get more Tencent massive technology practice dry goods~ 一, Tencent cloud map data beauty Before we understand Tencent cloud map, let's first come Looking at data visualization? This is the nebula map. He said that the number of QQ users...


Spark2.3.1 uses various modes to run the official Demo

... 1. Using the stand-alone local mode to submit the task local mode is the local mode, that is, the stand-alone program is executed on the local machine. Use this mode, you do not need to start Hadoop cluster, you do not need to start Spark cluster, as long as you have JDK 、 Scala 、 Spark...


Docker notes _ initial knowledge of virtualization and containers

... 一. The development of virtual technology Traditionally, to deploy an APP, you first need a physical server, then install an operating system on the physical server, and finally deploy the required APP on the operating system. There are many shortcomings, such as deploying various...