Programmer Group

Firewall is a new generation of system firewall management tools under Linux. Compared with the old iptables tools, Firewall provides more management functions, such as zone-based access authorization management, dynamic loading rules and so on. But there are many advanced functions that we don't have a chance to use in our dail ...

arm linux printer driver compilation method and process record (2017.03.15): Change Add Overview: Add foo2zjs tool (for sending data to printer for printing); Add gohstscript tool (for converting document format to pbm format recognized by printer); Encript is added to convert txt, c, cpp and other documents into PostScript format recognize ...

Batch distribution and execution of script keys Label (Space Separation): Linux Service Architecture - Chen Siqi This teaching note is a summary of my study and work career, which is the first draft (there are many imperfections), the original work, allowed to be reproduced, when reproduced, please be sure to indicate the original source of the ...

Linux skills I. nohup/setsid/& Use scenarios:If only a temporary command takes a long time to run, what is the easiest way to ensure that it runs stably in the background? There are two ways to solve this problem: either let the process ignore the HUP signal, or let the process run in a new session and become a sub-process that does not bel ...

Wildcard: * Any character ?: Any single character []: Any of them [-]: Sequence of a paragraph [^]: Not one of them # Display file names beginning with cron [root@CentOS ~]# ll /etc/cron* # Display the filename of exactly five letters under / etc /. [root@CentOS ~]# ll /etc/????? # Display the file name with numbers under / etc /. ...

Section 21 Rsync Data Synchronization Tool Label (Space Separation): Linux Practical Teaching Notes - Chen Siqi This teaching note is a summary of my study and work career, which is the first draft (there are many imperfections), the original work, allowed to be reproduced, when reproduced, please be sure to indicate the original source of the ...

The first two articles share the homestead + vagrant configuration, but they are single-point. Now let's study the configuration of multi-node cluster together. Multi-node Cluster Configuration/Creation Install VirtualBox Install Vagrant Download Box These previous articles have explanations and download links, which are not repeate ...

Preface If everyone likes to play hard, they usually prefer to install the minimal liunx system, then your system does not have graphical desktop functions. So for a beginner who wants to install B, Liunx is black and sloppy, endless black screen, black screen. How to quickly have a more comprehensive understanding of the liunx system? Answer: ...

The purpose of configuring dual namenode is to prevent errors and data loss from a namenode hanging up. The specific principle is not explained in detail in this paper, but the specific installation process is described here. The construction of Hadoop HA is based on Zookeeper. You can see the construction of Zookeeper here. hadoop, zookeepe ...

MHA (Master High Availability) is currently a relatively mature solution for MySQL high availability. It was developed by youshimaton (now working for Facebook) of DeNA Company in Japan. It is an excellent high availability software for failover and master-slave upgrading in MySQL high availability environment. In the process of MySQL fault swi ...