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environmental information roleIPsystemmaster10.4.7.152Ubuntu18.04node10.4.7.162Ubuntu18.04 1. Operating system configuration (both nodes need to execute) Operation node: master, node Disable swap swapoff -a #temporary sed -ri 's/.*swap.*/#&/' /etc/fstab #take/etc/fstab Document swap Line use#Notes (permanently disabled) Turn off ...

Disk management - logical volumes introduce Introduction to logical volumes Logical volume manager is a mechanism used by Linux system to manage hard disk partitions The original intention is to solve the defect that the hard disk device is not easy to modify the partition size after creating the partition. Although it is theoretically fea ...

1. File operation touch command Create a file. If the file name does not exist, create it directly. If it exists, change the access time touch [option] filename1 filename2... root@ubuntu:~/Test# touch hello.c root@ubuntu:~/Test# ls hello.c rm command: delete file or directory Parameter - r recursively delete subdirectories rm -rf * del ...

All requirements of this time come from: https://edu.cnblogs.com/campus/gzcc/GZCC-16SE2/homework/3075 preface This job is to crawl the information about python's relevant positions on the pull hook network. Through crawling the data such as position id, city, full name of the company, welfare treatment, work place, education requirements, wor ...

Article catalog 1, Introduction 1. What is PXE 2. Working process of PXE 2, Realize network manual installation 1. System environment preparation 2. Install and configure dhcp service 3. Install and configure tftp service 4. Install and configure httpd service 5. Configure PXE boot program (1) PX ...

Today, I will talk about Socket communication under Linux, including client and server. Customer service terminal The idea of connecting the client to the server is as follows:1. Establish Socket link, 2. Set the communication mode, IP and port of the server, and specifically set sockaddr_in, the ...

Dockerfile introduces and commonly used instructions, including FROM, RUN, COPY, ADD, EXPOSE, WORKDIR, etc. in fact, dockerfile has powerful functions and provides more than ten instructions.   About Dockerfile Dockerfile is a text file used to build an image. The text content contains instructions and instructions required to build an image. ...

C + + learning diary Double colon scope operator Namespace namespace Using declaration and using compilation instructions The enhancement of c + + to c Memory allocation of const The difference between const and define Inline function extern explicit Singleton mode Up down type conversion Type conver ...

Preface In " Packaging and deploying complex applications to the k8s cluster using helm "In this article, we package the application as a chart with helm, which simplifies the deployment process. However, while helm supports Seamless Upgrades for Stateless Applications on the line of Basic Install, replacing the mirrored version to ta ...

The theme of this article is "Ceph use series - Ceph RGW use", welcome to pay attention. Ceph RGW introduction Ceph object gateway is an object storage interface built on librados, which aims to provide a RESTful gateway to Ceph storage cluster for applications. Ceph object storage uses t ...