Programmer Think

RH358 configuring e-mail transmission – automated Postfix configuration Use Ansible to configure the SMTP of the Postfix system role. Are the superposition of commonly used modules. RH358 column address: https://blog.csdn.net/qq_41765918/category_11532281.html 1. Configure SMTP with Postfix system role The RHEL system roles ...

Linux System Engineer The system used in the experiment is redhat-rhel8 2. Linux system management - Apache management and optimization 1, Function and installation of Apache Web Server software stay web Commonly used when accessed http: //The way http: // ##Hypertext Transfer Protocol dnf install httpd.x86_64 -y 2, Enabling Apache ...

Why introduce users and groups? Security - permission management (which files can be read and written by a user and which processes can be started by a user) - Resource Management (storage resources, IO, CPU resources) [root@localhost ~]# id root uid=0(root) gid=0(root) group=0(root) Each user has a unique uid and gid A user can have differen ...

1. Comprehensive exercise (automatic deployment of Web cluster) 1.1 problems Evening self-study extracurricular comprehensive exercises, create a role called cluster and complete a comprehensive project. The specific requirements are as follows: Create Role and complete the project through RoleDeploy Nginx schedulerDeploy 2 http server ...

1. Why use Volumes volumes? The files in the container are temporarily stored on the disk. Once the container is deleted, the files in the container will be deleted, which brings some problems to the special applications running in the container. Specifically, first, when the container crashes, kubelet will restart the container, and the f ...

dokcer structure diagram Docker includes three basic concepts: Image: Docker image is equivalent to a root file system. For example, the official image ubuntu:16.04 contains a complete set of root file system of the smallest system of Ubuntu 16.04.Container: the relationship between an Image and a container is like a class and instanc ...

preface Use nginx + nginx a few days ago_ upload_ Module + python (callback handler) builds a simple file server. Many people on the Internet recommend using Lua to extend the functions of nginx, so they ponder how to use Lua language to expand the functions of nginx. After consulting many materials on the Internet, they find that the environm ...

I. network strategy If you want to control network traffic at the IP address or port level (OSI layer 3 or 4), you can consider using Kubernetes network policy for specific applications in the cluster. NetworkPolicy is an application-centered structure that allows you to set how to allow Pod to communicate with various network "entities&q ...

Preface I. Linux Operating System Should Be Processed Overview of the boot process Post After the server host is powered on, it will initially detect cpu (central processor), memory, graphics card, keyboard and other devices according to the settings in the motherboard BIOS. After successful detection, system control will be transferr ...

Main reference Using qemu to build kernel development environment - lixiaomu - blog Park It mainly involves the following points: virtualbox6.1, run ubuntu server 18.04, and then open ssh server for mac host access. Otherwise, the virtual box screen can't zoom automatically. It's really hot eyes. It is estimated that it is not so easy to com ...