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What is Kubernetes Kubernetes is an open source application for managing containerized applications on multiple hosts in the cloud platform. Kubernetes aims to make deployment of containerized applications simple and efficient. Kubernetes provides a mechanism for application deployment, planning, update and maintenance. < br / > kubernete ...

Install virtual machine and docker package 1, Download and install VirtualBox Download VirtualBox on the official website I won't talk about the installation, just go to next. 2, Configure and install virtual machines First, run the VirtulBox program. After opening the program, the first thing i ...

1, Overview of Kafka Kafka is a distributed Message Queue based on publish / subscribe mode, which is mainly used in Real time processing of big data. 2, Two modes of message queuing (1) Point to point mode (one-to-one, consumers pull data actively, and messages are cleared after receiving) The mess ...

Cluster deployment The dolphin scheduler cluster deployment is divided into two parts: backend deployment and front-end deployment 1. Back end deployment 1.1: basic software installation (please install the necessary items by yourself) PostgreSQL (8.2.15) + or MySQL (5.6 or 5.7 Series): choose ei ...

Filebeat brief introduction Filebeat is a log file shipment tool that monitors the log directory or specified log files, tracks them for reading, and forwards the information to either elasticsearch or logstarsh when the client is installed on your server. Architecture System Beats is a lightweigh ...

I want to set user name and password authentication for my MongoDB instance so that any remote access will require a user name and password. I tried this tutorial from MongoDB website and did the following: use admin db.addUser('theadmin', '12345'); db.auth('theadmin','12345'); After that, I quit and run mongo again. And I don't need a pa ...

1.3 Object Oriented 1.3.1 Object Oriented Foundation 1.3.1.1 Object Oriented 1.3.1.1.1 Basic concepts Procedures and Functions Procedure is similar to a function, can only be executed, but does not return a value A function not only executes but also returns results Simply put, object-orient ...

1. centos thin edition cannot be connected to the network after installation: Enter / etc / sysconfig / network scripts Modify ifcfg-ens33 Change ONBOOT to yes Then restart 2. centos modify host name 3. ubuntu source change 1> Back up the original source file source.list Open the terminal on the desk ...

Preface Ballerina is a fully open source compile time strong type language with the vision of making it easy for programmers in the cloud native era to write the software they want Open source address: https://github.com/ballerina-platform/ballerina-lang Example Download the package of corresponding platform for installation https://ballerina.i ...

Written in front Today, in the production environment running on Alibaba cloud ECS, all of a sudden, the access is abnormal and the interface reports errors. However, the company has no professional operation and maintenance personnel, so it can only solve the problem on its own. Troubleshooting On the surface, the database reports errors first ...