Linux Process Management Tool Supervisor

Linux / hypervisor installation and management toolsSupervisor(http://supervisord.org )It is a client/server service developed in Python. It is a process management tool under Linux/Unix system and does not support Windows system. It can easily monitor, start, stop and restart one or more processes. For a process managed by Supervisor, when a p ...

Posted by Edwin Okli on Sun, 22 May 2022 20:56:45 +0300

Shell Programming Specification Variable Details (shell programming specifications in Linux, how scripts are executed, pipe symbols and redirections, shell variable types)

Preface Shell is a program written in C that serves as a bridge for users to use Linux. Shell is both a command language and a programming language. _The execution of Linux commands must depend on the shell command interpreter. Shell is actually a special program that runs in the Linux operating system. It is located between the kernel of ...

Posted by simonmlewis on Sun, 15 May 2022 20:50:07 +0300

Kubernetes graphical interface dashboard

Graphical interface overview Dashboard is the abbreviation of business intelligence dashboard (BI dashboard). It is a general business intelligence dashboard The module that can realize data visualization is a data virtualization tool that shows the measurement information and the current situation of key business indicators (KPI s) to ent ...

Posted by mrcodex on Thu, 12 May 2022 09:39:34 +0300

SQL optimization case: OR condition optimization

Following is an introduction to the previous article, SQL Optimization Case (1): Implicit Conversion, which focuses on OR optimization. In MySQL, the same query condition, if the OR s are transformed in the SQL statement, the results of the query will be different. In many complex cases, poor index selection may be a potential performance hazar ...

Posted by dewbie on Mon, 09 May 2022 19:28:01 +0300

Flink processing function practice 4: window processing

Welcome to my GitHub https://github.com/zq2599/blog_demos Content: classification and summary of all original articles and supporting source code, involving Java, Docker, Kubernetes, DevOPS, etc; Link to Flink handling function practical series Learn more about the state operation of ProcessFunction (Flink-1.10); ProcessFunction; KeyedPro ...

Posted by sorin1982 on Sat, 07 May 2022 02:43:05 +0300

Block storage service (Cinder) installation and configuration, this article is enough!

This experiment is a relatively comprehensive experiment, which needs to be combined with some basic experiments such as the installation and configuration of OpenStack basic environment and the installation and configuration of identity authentication service (Keystone) to do the installation and configuration experiment of cinder. In order to ...

Posted by topsub on Wed, 04 May 2022 21:26:48 +0300

OpenStack initial environment setup

OpenStack environment configuration Virtual Machine Resource Information control node ct compute node ct1 compute node ct2 CPU: Dual core dual thread - CPU virtualization enabledMemory: 8G Hard Disk: 300G+300G (CEPH block storage)Dual NIC: VM1-(LAN) 192.168.100.40 NAT-192.168.177.4OS: Centos 7.6 (1810) - Minimal Install CPU: Dual core dua ...

Posted by redrage on Mon, 02 May 2022 10:04:16 +0300

Packet life cycle in Kubernetes -- Part 2

Life of a Packet in Kubernetes - Part 2 [1]By Dinesh Kumar Ramasamy This article has made appropriate modifications on the basis of the original text. If you have any questions, please refer to the original text.As we discussed in part 1, CNI plug-ins play a vital role in the Kubernetes network. Calico is one of many third-party CNI plug-ins cu ...

Posted by hawkenterprises on Sun, 24 Apr 2022 07:23:26 +0300

[cloud computing] three virtual machines complete spark yard cluster deployment and write Scala applications to realize word count statistics

catalogue 1. Prepare the environment          2. Install spark and configure the environment 3. Install scala and configure the environment 4. Install the editor idea 5. Write Spark Scala application to realize word count statistics 6. Spark on Yan configuration 1. Prepare the environment Virtual machine: VMware Workstation 16 linux ...

Posted by Shellfishman on Thu, 21 Apr 2022 13:50:35 +0300

Design of high availability cluster based on CentOS + docker + kubedm

🌟 preface Hello, I'm Edison 😎 Today is the third in our "cloud native" series: "deploying k8s clusters"; Let's get it! 1. Installation requirements Before starting, the deployment of Kubernetes cluster machines needs to meet the following conditions: One or more machines, operating system centos7 8-86_ ...

Posted by airric on Mon, 18 Apr 2022 11:49:49 +0300