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Yum (yellow updater modified) is an open source, widely used command line and graphics based package management tool. It is used to manage RPM based Linux systems, including but not limited to RedHat Linux, CentOS, and Oracle Linux. It is used to install, update, remove, and search packages on the system. The installation package is not limite ...

What is a container?In life, our common containers are all kinds of bottles, jars and jars, all kinds of things that can hold other materials are called containers. The characteristics of containers are that they have a good isolation function, which makes different materials isolated from each other. In addition, containers are convenient to t ...

background Because rexray, the Ceph plug-in of docker, has certain requirements for Ceph version, when Ceph version is hammer (0.94.10), rexray cannot create rbd device successfully. For CentOS 7 and above, hammer is installed by default, so we need to install a higher version of jewel. Ceph version available See also. install For installation ...

epel and ius sources provide a lot of useful software. CentOS uses the yum package manager, and the software source configuration file of Yum is stored in the directory / etc/yum.repos.d /. Back up and delete all CentOS-*.repo entries, and create centos.repo file: [base] name=CentOS-$releasever - Base baseurl=https://mirrors6.tuna.tsinghua.edu. ...

Recently, all kinds of servers have been intruded, so in terms of security, we should pay great attention to it. We hereby record that we can use google's authentication plug-in to obtain dynamic authentication code to complete ssh login.    OS: 　　centos7   Installation configuration: 1. Install epel source yum -y install epel-release 2. ...

ngxtop, a log monitoring tool for nginx   Looking at nginx log files in tail? out! Tail-f log path ngxtop: ngxtop is a python-based program that can be installed on Python. ngxtop parses nginx access logs in real time and outputs the results (useful indicators of nginx servers) to terminals   ...

introduce MHA (Master High Availability) is currently a relatively mature solution to MySQL high availability. It is a set of excellent high availability software as fault handover and master-slave promotion in MySQL high availability environment. In the process of MySQL fault switching, MHA can automatically complete the database fault swi ...

A Brief Introduction to cobbler Operational and maintenance automation includes standardization, instrumentation, Web-based, service-based and intelligent levels. In a production environment with a slightly larger scale and thousands or even tens of thousands of servers, instrumentation system installation process and unified system installatio ...

Redis installation Reprint: https://github.com/jaywcjlove/handbook Official Compilation and Installation $ wget http://download.redis.io/releases/redis-4.0.0.tar.gz $ tar xzvf redis-4.0.0.tar.gz -C /usr/local/ $ cd /usr/local/redis-4.0.0 $ make $ make test $ make install # The program will execute automatically: # mkdir -p /usr/local/bin ...