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    PXE(preboot execute environment) is the latest technology developed by Intel Corporation, working in Client/Server network mode, supporting workstations to download images from remote servers over the network, and thereby supporting the boot of operating systems over the network. During the boot process, the terminal requires the ...

1. pkg.available_version modulepkg.available_version: Returns the latest version of the queried package that can be installed or updated. If multiple packages are specified, the returned results are output in the form of a dictionary.[root@salt-master ~]# salt '*' pkg.available_version httpd salt-minion02.contoso.com: & ...

Preface When we set up a python 3.6 environment on one computer, the next time we switch to a computer or a linux system, we have to rebuild it again, set up environment variables, download pip and so on. Very easy to install, after a while the Scrips directory can not find pip.exe, one will prompt that pip is not an internal or external comman ...

CentOS 5 series system comes with syslog 1.4.1centos6 series with rsyslog version 5.8.10CentOS 7 series with rsyslog version 7.4.7At present, the latest version of rsyslog is 8.27.0. rsyslog reconstructs the imfile module from 8.5.0. The wildcard can be supported in the file name.rsyslog: http://www.rsyslog.com/To upgrade rsyslog, you need to c ...

Recently, an Esxi server needs to be hosted, only one public network ip, but all virtual machines need to access the public network. I haven't found a NAT network model similar to Vmware workstation in Esxi, so I want to use a virtual machine as a NAT server. My virtual machine system has Win2008 and entOS7. Considering the stability, I chose ...

Summary Redis Introduction and Installation Reference: Introduction and installation of Redis String type is the most basic data type in Redis. It can store any form of string, including binary data. Introduction to Commands set command Syntax: SET key value [EX seconds] [PX milliseconds] [NX|XX] Initial version: 1.0.0 Summary: Set a ...

Redis Cluster Building Instructions Using two virtual machines to simulate 6 nodes and one virtual machine to create 3 master and 3 salve environments Redis version: redis-3.2.4 linux version: CentOS 6.5 (10.60.44.76), CentOS 7.0 (10.60.44.105) 1. Download the redis installation package Installation package is attached, redis-3.2.4.tar.gz 2. ...

Contents of this article: 12.1 Configure Timer Tasks 12.2 crontab file Debugging 12.3 crond command 12.4 Task Schedule Accurate to Seconds 12.1 Configure Timer Tasks First, you need to understand the concepts: (1).crond is a daemon class program with a path of / usr/sbin/crond.The default will start in background mode, and crond will start in ...

A version control software commonly used in development is SVN. Sometimes the content of a version controller needs to be backed up/restored or migrated. Although it is rarely used, once used, the knowledge should be mastered. Environment: CentOS 6.6 There are three ways to backup and restore svn, the first two are highlighted here: Offici ...

background Developer feedback system is particularly slow to execute a stored procedure, which is checked because of the need to insert a large amount of data into the new task table during the execution of the stored procedure. The primary key of the task table is clustered index. Why does clustering index cause slow insertion? How much impa ...