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colony Organize many machines together and provide services as a wholeClusters can be flexible in terms of scalability and performanceCluster classification: Load Balance cluster: Load BalanceHigh Availability cluster: High AvailabilityHigh Performance Computing LVS LVS: Linux Virtual Server Load balancing cluster Author: Zhang wenson ...

Containers run in the cloud because container technology allows websites and Web applications to produce new copies as demand increases. They are the reason why hundreds of millions of people can use popular websites without causing them to collapse under the pressure of global traffic. Containers are a kind of Linux technology, which means th ...

Linux system disk management Add virtual diskDisk partition formattingDisk mount usageBoot auto mount Add virtual machine disks (3 disks) First, shut down the virtual machine, set the virtual machine settings, and add disks. Log in to the system and check whether the addition is successful Display of hard disk: / dev directory hard ...

Reprint: http://book.odoomommy.com/chapter5/README14.html Chapter 14 startup of Odoo Startup script Let's take a look at the startup script of Odoo first: __import__('os').environ['TZ'] = 'UTC' import odoo if __name__ == "__main__": odoo.cli.main() It can be seen that the startup of odoo has done two things: Set the time zone of the ...

Logical volume related operations You can think of a logical volume as a component area, so of course, this logical volume also needs to be formatted and mounted. In addition, the logical volume can also be dynamically resized, and the data will not be lost, and there is no need to unmount the logical volume. The commonly used commands are l ...

1. Front end image construction record 1. dockerfile # Phase I FROM node:latest AS build ARG COSTAR_ENV ENV COSTAR_ENV=${COSTAR_ENV} COPY . . RUN npm config set registry https://registry.npm.taobao.org/ && \ npm install && \ npm run dev_build && \ mv dist web_portal && \ cp -r web_portal /www/ ...

1.1 template virtual machine environment preparation 0) install the template virtual machine, with IP address 192.168.10.100, host name Hadoop 100, memory 4G and hard disk 50G 1) The configuration requirements of Hadoop 100 virtual machine are as follows (the Linux system in this paper takes CentOS-7.5-x86-1804 as an example) (1) Using Yu ...

vim is a lightweight editor with a powerful group of plug-ins. Its powerful user-defined shortcut key function allows you to realize various editing operations without touching the mouse. Configuration directory of vim . vimrc is the configuration file of vim. Users need to modify this file to personalize vim vimrc configuration files are di ...

catalogue Shell operator Arithmetic operator Boolean operator Logical operator String operator File test operator echo print data test command number character string File test Shell process control if case for while break continue Shell function Shell operator Arithmetic operator #! /bin/bash a=20 b=10 val=`expr $a ...

preface I believe there are still many people who don't know what ebpf is or where to start. However, it seems that it is becoming a de facto standard for the technical means of cloud native development performance optimization. In particular, ebpf has great advantages in container network performance and security. Almost all cloud manufac ...