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1. Check whether SSH is installed: it is generally installed by default [changairjb@localhost ~]$ rpm -qa | grep ssh libssh-0.9.5-1.oe1.aarch64 openssh-8.2p1-13.oe1.aarch64 openssh-server-8.2p1-13.oe1.aarch64 //Server libssh2-1.9.0-6.oe1.aarch64 openssh-clients-8.2p1-13.oe1.aarch64 //client 2. If not installed: enter the following com ...

1, Experimental environment The underlying system is Ubuntu 18 04, then install k8s on each node and build a cluster. The IP address of the Master node is 192.168 26.71/24, the IP address of two worker nodes is 192.168 26.72/24,192.168. 26.73/24. 2, Seccomp 1.Seccomp concept seccomp (full name: secure computing mode) is a security mechanis ...

chdir Modify the current process path; SYNOPSIS: #include <unistd.h> int chdir(const char *path); DESCRIPTION: path: the working directory to be changed, similar to the cd command; RETURN VALUE: 0 is returned for success and - 1 is returned for failure; getcwd Obtain the working directory of the current process; SYNOPSIS: #inc ...

1. Version and planning 1.1 version information: nameVersion numberkernel3.10.0-1160.el7.x86_64operating systemCentOS Linux release 7.9.2009 (Core)docker20.10.11kubeadm1.23.0kubelet1.23.0kubectl1.23.0 1.2 cluster planning IPhostname192.168.0.114k8s-master192.168.0.115k8s-node01192.168.0.116k8s-node02 2 deployment explain: From step 1 t ...

In Linux, the kernel is for each Open files provide three data structures to maintain them. The relationship between them determines the possible impact of one process on another in file sharing. Process level file descriptor tableSystem level open file tableinode table of the system I Open file descriptor table 1. What is an open file ...

preface This article also cost me a lot of effort. First of all, I want to make it clear that at least more than 100% of the knowledge points in this article before I write this article are not clear. Moreover, the total number of words after writing this article is no more than 24 hours, with a statistics of more than 27800 words and more tha ...

prefaceWith the influence of COVID-19, the demand for audio and video has explode in the past two years. In the field of audio and video, WebRTC can be said to be an inseparable treasure house, including the whole process of audio and video acquisition, encoding and decoding, transmission and rendering. This paper mainly records the whole proce ...

1, Prometheus deployment Environmental preparation hostnamectl set-hostname prometheus systemctl stop firewalld systemctl disable firewalld setenforce 0 vim /etc/resolv.conf nameserver 114.114.114.114 ntpdate ntp1.aliyun.com #Time synchronization must be done, otherwise there will be problems Unpack and start service #Drag the ...

Multitask Mutual Exclusion and Synchronization Overview of Mutual Exclusion and Synchronization In a multitask operating system, multiple tasks running at the same time may need to access/use the same resource. Many tasks depend on each other. One task depends on another task. Synchronization and mutually exclusion are the solutions to both ...

Today, we started Chen Shuo Da's journey of linux multithreaded server programming to learn the muduo network library. Here we mainly record the installation of muduo in the ubuntu subsystem of WSL under win11. Firstly, since muduo uses cmake as the build system, cmke must be installed first. In addition, since muduo depends on Boost (the core ...