Programmer Group

Background: When a RHEL7 machine is newly built, there is no graphic interface???? reason: The system was created without graphing installed The default run level of the system is not graphical After the system is installed, there are operations to reduce the memory. If the memory is too low, the desktop cannot be ...

Dockerfile customized in work java:8.0 jenkins-slave:8.0 nodejs:v10.15.0 maven:8.0 httpd:7.5 newman:5.0.0 sonar:6.7.4 The intranet is used by the company, so the installation packages used in some dockerfiles can be easily transferred to the intranet under the external network. The installation packages are place ...

Preface For a long time, the mastery of linux is the state of half bucket of water. Usually, you can load something from yum and rely on a bunch of things as a result. Then you can load something from the source code. You only know make and make install. What's behind it is unclear and it's inconvenient to unload. These days, I need to write ...

Simply say the value of OPENLDAP to operation and maintenance management, and support the development of enterprise technology, such as GIT, ZABBIX, jmpserver, OA and other large and small systems, as well as the authentication and login of Windows and Linux systems. If each platform needs to maintain a user management system, then if an emplo ...

This document gives a method to recover the files deleted by mistake in ext4 file system. The software to be used is extundelete, which has a high recovery success rate for ext4 file system and is worth having! [root@localhost ~]# rm -Rf /   #Execution failed! rm: stay"/" Recursive operation is very dangerous rm: Use --no-preserve-root Option ...

python3 environment construction under Linux What are the ways to install Linux software? The manual installation of rpm package rejects this mode, and the dependency needs to be resolved manually yum automatic installation is very easy to handle dependency automatically Source code compilation and installation, more customizable functio ...

It's different from ordinary software. Instead of installing rpm directly, install rpm first to get the yum source, and then use Yum to install it Download rpm package [root@VM_149_46_centos ~]# wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm Install rpm package [root@VM_149_46_ce ...

The complete architecture requires two servers (the role is dir) to install the Keepalived tool respectively, in order to achieve high availability, but Keepalived also has load balancing function, so only one Keepalived can be installed in this use. Keeping alive has the function of ipvsadm built in, so you don't need to install ipvsadm packa ...

Preface In May 17, 2013, after the last IBM small computer of Alibaba group was released from Alipay, there is no doubt that MySQL is already the most widely used database in Internet Co nowadays. Mysql is free and open source, and it can be conveniently extended horizontally to support high concurrency traffic. Small and medium-sized enterpri ...

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 ...