Programmer Think

1. Vim automatically adds annotations and intelligently changes lines #vi ~/.vimrc set autoindent set tabstop=4 set shiftwidth=4 function AddTitle() call setline(1,"#!/bin/bash") call append(1,"#====================================================") call append(2,"# Author: lizhenliang") call append(3,"# Create Date: " . strftime("%Y-%m-%d")) ...

Build a vulnerability environment (attacked) Install weblogic 10.3.6.0 Close windows Firewall Open the installation package and proceed until the following interface appears Then go on to the next step. Upon completion of installation        Go to C: Oracle Middleware user_projects ...

This paper mainly introduces the use of the third declarative component, Application Services 3 Extension (hereinafter referred to as AS3). AS3 provides a declarative way to configure the L4-L7 configuration of F5 BIGIP, including the configuration of LTM, DNS, AFM, ASM and other modules. It supports the configuration of multi-tenant and multi ...

Environment and Software centos7 elasticsearch 7.4.0 Because ES7 already has the JDK version of the required java built-in, the java installation is not introduced here. ES7 installation mode uses RPM installation mode. es node list ip Node name 192.168.1.100 es-node-master-01 192.168.1.101 es-node-master-02 192.168.1.102 es-node-mas ...

Configuration example: https://blog.51cto.com/14227204/24389021. The working principle and function of keepalived: At first, keepalived was a powerful auxiliary tool designed specifically for LVS. It was mainly used to provide fault switching and health checking functions - to judge the availability of LVS load dispatcher and node server, to i ...

I. Preface A proxy is an intermediary who accepts requests from the requester instead of the server. We've also heard of proxy servers, which help clients to request resources they want. Why do they use proxy? That's because clients can not access servers directly (firewall shielding), while proxy servers can access servers directly. Clients c ...

Linux firewall system mainly works in the network layer. It belongs to the typical packet filtering firewall for real-time filtering and restriction of TCP/IP packets. How does the Linux firewall check data traffic? For the data packet entering the s ...

Deployment of PXE brief introduction What is PXE? 1. PXE is the abbreviation of Preboot Execution Environment, which is called Preboot Execution Environment. 2. A network protocol designed by Intel enables the computer to start the installation system through the network. 3. It is a mechanism to start a computer with network interface, which d ...

Basic environment CentOS Linux release 7.6.1810 (Core) OpenSSH_7.9p1, OpenSSL 1.0.2k-fips 26 Jan 2017 Upgrade preparation Open the file transfer tool (such as xftp) while opening the ssh connection tool (such as xshell). Because the upgrade process cannot create new connections for the need to up ...

Articles Catalogue Introduction to Ansible roles roles directory structure Create roles Give an example Use roles to install and open httpd services for the host, and add httpd to the firewall list haproxy deployment (load balancing) Implementation of keeping alive + haproxy high availability ...