Programmer Group

Reference materials: Bird brother's Linux private dishes: Basic Edition, Liu Chao's interesting talk about Linux operating system, UNIX/Linux system management technical manual, 4th Edition, in-depth understanding of Linux kernel, 3rd Edition, advanced programming in UNIX environment, 3rd Edition, Linux kernel source code scenario analys ...

In the previous article, we learned how to obtain host monitoring information through node exporter. However, installing monitoring is only the first step. We also need to know which monitoring indicators we need to pay attention to. This paper will introduce the host monitoring indicators related to Prometheus. 1, CPU monitoring CPU load n ...

1. Virtualized network Network Namespace is a function provided by Linux kernel and an important function to realize network virtualization. It can create multiple isolated network spaces with independent network stack information. Whether it is a virtual machine or a container, it seems as if it is running in an independent network. Moreo ...

preface We all know that nginx has many features and benefits, but it has become a difficult problem to develop on nginx. Nginx modules need to be developed in C and must comply with a series of complex rules. The most important module developed in C must be familiar with the source code of nginx, which makes developers afraid of it. For the ...

I/O multiplexing I/O complex method: select poll epoll effect: You can listen to multiple file descriptors at the same time, Enables the server to process multiple file descriptors at the same time without introducing multiple processes. Network programs need to use I/O multiplexing technology: ◼ The TCP server handles both listening sock ...

This article is a reprint of the article, the original link https://www.cnblogs.com/keerya/p/7987886.html catalogue Introduction to ansible What is ansible?ansible featuresansible architecture diagramansible task execution ansible task execution modeansible execution processansible command execution processDetailed explanati ...

1 What is a Docker image The Docker image is an overlay of the file system. At the bottom is a file boot system, bootfs. Docker users will not have direct interaction with the boot file system. The second layer of the Docker image is the root file system rootfs, which is usually one or more operating systems, such as ubuntu. In Docker, the ...

Users Accounts Authenticationkubeconfig configuration fileAs mentioned earlier, communication between K8S is achieved through https, which requires authentication every time, such as when we enter a command from the command line[root@k8s-master ~]# kubectl get podRequires https authentication, and https is stateless link means that certificates ...

Chapter I Q1 brief introduction to the application field of Linux system Linux The server; Embedded Linux System; Software development platform; Desktop applications Q2 briefly describe the characteristics of Linux system Openness, multi-user, multi task, good user interface, equipment independence, rich network functions, reliable s ...

The notes are learned according to the old boy Video + official documents and recorded. If there are mistakes and omissions, those in a good mood can point out them. Video address: https://www.bilibili.com/video/BV1LJ411Y7og?p=12   Mirror service (GRACE) The mirroring service (GRACE) allows users to discover, register and obtain virtu ...