The introduction and application of k8s storage mode

k8s storage: (persistent) docker containers have a lifecycle.volume 1. Storage class is a kind of k8s resource type. It is a logical group created by administrators to manage PV more easily. It can be classified according to the performance of storage system, or comprehensive service quality, backup strategy, etc. But k8s itself doesn't know w ...

Posted on Fri, 07 Feb 2020 06:50:25 -0500 by gotissues68

Ambari 2.7.0 + hdp3.1.4.0 installation, hdfs data backup and recovery, hive data backup and recovery, hbase data backup and recovery

Catalog 1 Ambari + HDP offline installation 1.1 INTRODUCTION 1.1.1 introduction to ambari 1.1.2 HDP 1.1.3 HDP-UTILS 1.2 address of ambari official website 1.3 Ambari and HDP Downloads 1.4 system requirements 1.4.1 software requirements 1.5 modify the maximum number of open files 1.6 cluster node plann ...

Posted on Fri, 07 Feb 2020 06:30:42 -0500 by ryanyoungsma

MySQL in python

1> Installation of mariadb under. Linux 1.Find and mariadb Relevant security subcontracting version yum search mariadb 2.install mariadb Customer and service packages for yum install mariadb mariadb-server.x86_64 -y 3.start-up mariadb service systemctl start mariadb systemctl enable mariadb 4.maria ...

Posted on Fri, 07 Feb 2020 06:26:53 -0500 by samyl

Introduction to the LNMP architecture and software deployment

The lnmp architecture is often heard at work, so what exactly is it? lnmp is the mainstream WEB architecture of Internet companies. In lnmp l is a linux operating system Nginx is a nginx for Publishing Web sites (for static web pages, disconnected databases (html)) nginx is a high performance HTTP and r ...

Posted on Fri, 07 Feb 2020 00:38:27 -0500 by cleanice

ansible installation and module management

brief introduction 1. The process of installing and deploying ansible is very simple and the learning curve is flat.2. There is no need to install the client separately. Knowledge can be leveraged using existing SSHD services (protocols).3. Based on Python development, it combines the advantages of many operation and maintenance tools (puppet, ...

Posted on Thu, 06 Feb 2020 23:19:08 -0500 by gca07738

A reusable distributed transaction message architecture scheme based on RabbitMQ!

Author: Throwable Blog Park: https://www.cnblogs.com/throwable/p/12266806.html premise Distributed transaction is a difficult problem in micro-service practice. In the micro-service practice schemes implemented by the author, all of them adopt compromise or avoid strong consistency.Referring to the local message table scheme proposed by Ebay ...

Posted on Thu, 06 Feb 2020 22:48:04 -0500 by bigfatpig

Mybatis addition, deletion, modification and query

Main writing usage Introducing dependency <!--mybatis and MySQL rely on/coordinate--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.5</version> </dependen ...

Posted on Thu, 06 Feb 2020 08:51:38 -0500 by thephpguy

Handwritten Tomcat web server test online bank transfer system

1. introduction In the previous chapters, we have designed and completed the development of web server. Next, we developed a simple online banking transfer system to test the web server. Our development roles are WebApp developers. We named the web application bank. 2.mytomcat [preparations] Do you ...

Posted on Thu, 06 Feb 2020 04:06:52 -0500 by drexnefex

Summary of Dart basic functions, classes, objects, static members, operators, inheritance and abstract class knowledge points

Functions in Dart 1. Knowledge points related to functions: (1) Definition of function (2) Optional parameters - > (3) Default parameters (4) Named parameters (5) Arrow function (6) Anonymous function (7) Closure, etc 2. Built in method print(), etc. 3. User defined method Bas ...

Posted on Thu, 06 Feb 2020 01:57:21 -0500 by niranjnn01

JDBC (Java database connectivity) database connection (how the client accesses the database):

JDBC (Java database connectivity) database connection (how the client accesses the database): Mainstream Architecture (two architectures): 1. BS architecture (browser and server) browser server architecture ---- web, javaweb, phpweb 2. CS architecture (client and server) client server architecture --- ...

Posted on Thu, 06 Feb 2020 01:30:12 -0500 by XeRoZeN