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What is cluster A group of computers interconnected by a high-speed network and managed in a single system mode. Many servers are put together to provide the same service, which looks like only one server in the client. It can obtain relatively high benefits in performance, reliability and flexibilit ...

Linux system call refers to a set of "special interfaces" provided by the operating system to user programs through which user programs can obtain special services provided by the operating system. To better protect kernel space, programs are divided into kernel space and user space, which ru ...

Basic information of LAN transmission 1. What is Io? ⦁ definition ⦁ blocking IO ⦁ non blocking IO 2.IO multiplexing definition select specific usage 3. Realize the file transmission of multiplex LAN server.py client.py FileOperation.py matters needing attention Operation effect 1. What is ...

Pure Linux PostgreSQL offline installation tutorial for girlfriend PostgreSQL database installation, based on version 10.5.1, Use *. gz binary compression package to install manually on Linux system. Installation package: postgresql-10.5.1-linux-x64-binaries.tar.gz 1. Create postgres user groupadd p ...

Enterprise Actual LNMP High Performance Server_wordpress, discuz dual site deployment In LNMP WEB architecture, Nginx is a high performance WEB server and cannot process PHP itself. When receiving HTTP Request requests from client browsers, Nginx server responds to and processes WEB requests. Static resource CSS, pictures, videos, TXT and othe ...

Brief answer 1. Count the number of files under / var/log. find /var/log/ ! -type d |wc -l //Or l l - R / var / log / | egrep "^ [SL -] [RWX -] {9}" | WC - L 3. Write a script to judge which ip address is currently online in the 192.168.1.0/24 network, and which ip address can be ping ...

"Everything is a file", a concept heard just after contacting Linux, embodies the design philosophy of Linux, abstracts all software and hardware resources into files, enables users to operate almost all system resources with the same api, brings great convenience to application development ...

How is it implemented to migrate the project to k8s platform? Make a mirror image Controller management Pod Pod data persistence Exposed applications Publish application to the public Log / monitor 1. There are three steps to making a mirror image The first basic image is based on which operating system, such as Centos7 or other The second ...

There are two ways to implement raid: The performance of software RAID is low because it uses the resources of the host. You need to load the raid software to read data from the software RAID volume. Before loading the raid software, the operating system needs to boot up to load the raid software. No physical hardware is required in software RA ...

Detailed explanation of linux shell command line options and parameter usage In bash, there are three ways to handle command line arguments - direct processing: use $1, ,...,$n for parsing - getopts: the case of a single character option (for example: - n 10 -f file.txt Etc.) - getopt: can handle single character options or long opti ...