Programmer Group

1 Description The system CTL tool is required to set the startup and self start. systemctl is a systemd tool, which is mainly responsible for controlling systemd system and service manager. SYSTEMd is a collection of system management daemons, tools, and libraries to replace the System V initial process. The function ...

1.https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz Download the installation package. The previous MySQL installation failed because of the selected version. It is recommended to select [Linux generic] Decompression: tar zxvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz //Put the ...

Optimization term 1. Close selinux, firewalld (centos7) / iptables (centos6) 2. Modify character set 3, Simplify startup items 4. Modify maximum file descriptor 5. Modify yum source and install common tools 6. Optimize system kernel 7. Optimize ssh login speed 8. Disable ctrl+alt+del restart 9. Set time synchronization 10. history opt ...

I haven't written a blog for a long time. Although I haven't written a few articles, I'm still active in the Internet industry... Needless to say, it's useless. Let's share how to synchronize Git services.Git service we usually use gitlab rake tool to do regular backup. When there is a problem, we can use backup recovery. Is there a need for a ...

Unveil docker (basic theory and installation details) Preface This article will focus on the following aspects to unveil docker: What is docker? Why do I need docker? The core concept of docker What is docker? Based on Linux, docker is an open source tool to run applications in it, which can be considered as a lightweight virtual machine. Do ...

Some users need to start the service when the system is powered on. This article will explain how to start the Ngrok client automatically when the system is powered on under Linux. This article supports Ubuntu, raspberry pie, Centos7, Debian series of systems. If the Centos system does not have start stop daemon installed, see Centos install st ...

Source code: GitHub point here || GitEE point here 1, Introduction to PostgreSQL 1. Database introduction PostgreSQL is a powerful open source database system, which has the characteristics of reliability, stability, data consistency, and can run on all major operating systems, including Linux, Unix, Windows, etc. PostgreSQL is a complete tran ...

ldd command in linux https://blog.csdn.net/nzjdsds/article/details/86759843   In linux, some commands are common to everyone, such as ls, rm, mv, cp, etc. I don't think it's necessary to go into details. And some commands are only used by developers. As programmers, we ne ...

Catalog 1. Environmental planning 2. binlog is enabled for all Mysql to ensure that the server IDs of all MySQL are different 3. The master database authorizes the master-slave replication user 4. The main database makes the database data fully available, and then pushes the backup file to the slave database 5. Restore backup files from the d ...

1, users Linux is a multi-user, multi task operating system Multiple users: multiple users log in at the same time Multitask: each user can perform multiple tasks User: Management of Linux system Users are generally divided into user name and user ID (UID) The user name is convenient for the administrator to use, and the user ID is the o ...