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stay Did you use Kubernetes autoscale correctlyThe article describes in detail how to use Kubernetes' automatic scaling. There are three main types of elastic expansion in Kubernetes: HPA, VPA and CA. This article will not be explained in detail. Those who are interested can see that article. Here we mainly focus on the horizontal scaling of th ...

1. String definition String is the most commonly used data type in Python. We can use quotation marks ('or ') to create strings. Creating a string is as simple as assigning a value to a variable. For example: var1 = 'Hello World!' var2 = "Python Runoob" 2. Access the value in the string Python does not support single character type, ...

1, Creation of docker image 1. How to create a mirror There are three ways to create an image: Based on an existing image, based on a local template, and based on a Dockerfile. 2. Create from an existing mirror (1) Start an image and modify it in the container docker run -it --name jc1 centos:7 bash #Create a container first yum instal ...

1, ELK 1. ELK introduction ELK platform is a complete set of centralized log processing solution, which combines ElasticSearch, Logstash and Kibana to meet more powerful user requirements for log query, sorting and statistics. Elastic search: it is a distributed storage search engine based on Lucene (a full-text search engine architec ...

Welcome to my GitHubhttps://github.com/zq2599/blog_demosContent: classification and summary of all original articles and supporting source code, involving Java, Docker, Kubernetes, DevOPS, etc;Overview of this articlestay Three minutes: fast experience JAVA version of target detection (YOLO4) In this article, we experienced the powerful object ...

1. Conditional statements Python conditional statements are code blocks that determine the execution result (True or False) of one or more statements. The following figure summarizes the execution process of conditional statements: Conditional judgment in Python is mainly realized through if statements. color="red" if (color=="green"): ...

1. Set up zookeeper cluster 1.1 problems This case requires: Set up zookeeper cluster1 leader2 follower s1 observer 1.2 steps To implement this case, you need to follow the following steps. Step 1: install Zookeeper 1) Edit / etc/hosts and all cluster hosts can ping each other (configured on Hadoop 1 and synchronized to node-0001, ...

1. Create a custom image 1.1 problems This case requires two methods to create a custom image. The specific requirements are as follows: Starting containers with centos imagesConfigure yum source in containerInstall software bash completion net tools iproute psmisc VIM enhancedCreate a custom image myos:latestValidate custom image 1.2 ...

1. Experimental environment 1.1 problems Four virtual machines are prepared, three of which are used as storage cluster nodes and one is installed as client to realize the following functions: Create 1 client virtual machineCreate 3 storage cluster virtual machinesConfigure host name, IP address, YUM sourceModify the hostname of all ho ...

1 case 1: enable SELinux protection 1.1 problems This example requires SELinux to be configured for virtual machines server0 and desktop0: Make sure SELinux is in force enable modeThis setting must remain valid after each reboot 1.2 scheme SELinux, security enhanced Linux: it is a set of kernel based enhanced mandatory security prote ...